interesting "avoid move" position

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jdart
Posts: 4402
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

interesting "avoid move" position

Post by jdart »

[d] 5k2/8/1p3q2/p1p5/P1P2p1p/1P1r1PpP/4R1P1/1Q4K1 w - - 0 53

Re8+ transitions to a losing endgame, so should be avoided.

Rybka is pretty fast on this but other engines I have tried are not.

--Jon
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: interesting "avoid move" position

Post by zullil »

jdart wrote:[d] 5k2/8/1p3q2/p1p5/P1P2p1p/1P1r1PpP/4R1P1/1Q4K1 w - - 0 53

Re8+ transitions to a losing endgame, so should be avoided.

Rybka is pretty fast on this but other engines I have tried are not.

--Jon
Stockfish-1.6SmoothReduct---icc---x86_64---pgo---2 threads seems to do well:

Code: Select all

Searching: 5k2/8/1p3q2/p1p5/P1P2p1p/1P1r1PpP/4R1P1/1Q4K1 w - -
infinite: 0 ponder: 0 time: 0 increment: 0 moves to go: 0
 2     -0.77   00:40      325 Re8+ Kxe8 Qxd3 Qa1+ Qf1 Qd4+ Kh1 
 2     -0.57   00:40      398 Re4 Rd2 
 2     -0.32   00:40      447 Re5 Rd2 
 2     -0.24   00:40      505 Kf1 Qd4 
 3     -0.32   00:40      958 Kf1 Qd4 Qc2 
 4     -0.36   00:40     1420 Kf1 Qd4 Qc2 Kf7 
 5     -1.05   00:40     2412 Kf1 Qd4 Qe1 Rxb3 Qc1 
 5     -0.65   00:40     5323 Kh1 Kf7 Re1 Re3 Rd1 
 5     -0.61   00:40     6461 Re1 Qd4+ Kh1 Kf7 Qc2 Re3 Qf5+ Kg7 Qg4+ Kf7 Qf5+ 
 6     -0.77   00:40     7405 Re1 Qd4+ Kh1 Kf7 Qc2 Qf2 Qc1 
 7     -1.01   00:40    20544 Re1 Qd4+ Kh1 Kf7 Rf1 Ke7 Re1+ Kd6 Qc2 Re3 Rd1 
 7     -0.24   00:40    29167 Qe1 Qf7 Rd2 Rxd2 Qxd2 Ke7 Kf1 Qf5 
 8  <  -1.45   00:40    66107 Qe1 Rxb3 Re8+ Kf7 Rb8 Qd4+ Kh1 Qxc4 
 8     -1.09   00:40    74437 Re1 Qd4+ Kh1 Kf7 Rf1 Ke7 Re1+ Kd6 Qc2 Kc7 Re7+ 
                              Kd8 Re1 Rd2 
 8     -0.81   00:40    82866 Kf1 Qd4 Qe1 Re3 Rxe3 fxe3 Qe2 Ke7 Qc2 Kf6 
 9     -0.69   00:40    94298 Kf1 Qd4 Qe1 Re3 Rxe3 fxe3 Qe2 Qc3 Qa2 Qd3+ Ke1 
                              Ke7 Qb2 
10     -1.05   00:40   124213 Kf1 Qd4 Qe1 Re3 Rxe3 fxe3 Qe2 Qc3 Qd1 Ke7 Qd5 
                              Qxb3 Qe4+ Kd7 Qg4+ Kd6 Ke2 Qxa4 Qxh4 
10     -0.97   00:40   161382 Re8+ Kxe8 Qxd3 Qa1+ Qf1 Qb2 Qe1+ Kd8 Qd1+ Ke7 Kh1 
                              Qd4 Qb1 Kf6 Qe1 Kf5 Qb1+ Ke5 Qe1+ Kf5 
11     -0.93   00:40   182939 Re8+ Kxe8 Qxd3 Qa1+ Qf1 Qb2 Qe1+ Kd8 Qd1+ Ke7 Kh1 
                              Qd4 Qb1 Kf6 Qc1 Kf5 Qe1 Qe3 Qb1+ Kf6 Qd1 
12     -0.97   00:40   265643 Re8+ Kxe8 Qxd3 Qa1+ Qf1 Qb2 Qe1+ Kd8 Qd1+ Ke7 Kh1 
                              Qd4 Qb1 Kf6 Qc1 Qe3 Qd1 Ke7 Qb1 
13  >  -0.77   00:40   344795 Re8+ Kxe8 Qxd3 Qa1+ Qf1 Qb2 Qe1+ Kd8 Qd1+ Ke7 Kh1 
                              Qd4 Qb1 Kf6 Qc1 Qe3 Qd1 Ke7 Qb1 Kd6 Qg6+ Ke5 Qg5+ 
                              Kd6 Qd5+ Kc7 Qf7+ Kd6 Qd5+ 
14     -0.73   00:40   481174 Re8+ Kxe8 Qxd3 Qa1+ Qf1 Qb2 Qe1+ Kd8 Qd1+ Ke7 Kh1 
                              Qd4 Qb1 Kf6 Qc1 Qe3 Qd1 Ke7 Qb1 Kd8 Qd1+ Kc7 Qb1 
15  <  -1.45   00:40   732756 Re8+ Kxe8 Qxd3 Qd4+ Qxd4 cxd4 Kf1 Kd7 Ke2 Kd6 Kd3 
                              Kc5 Ke4 Kb4 Kxd4 Kxb3 c5 bxc5+ Kxc5 Kxa4 Kc4 Ka3 
15     -0.53   00:41    1892k Kf1 Qd4 Qe1 Re3 Rxe3 fxe3 Qe2 Qc3 Qd1 Ke7 Qb1 Kd8 
                              Qd1+ Kc7 Qb1 Qd4 Qh7+ Kc6 Qg6+ Kb7 Qe4+ Kc7 
16  <  -1.09   00:41    2922k Kf1 Qc3 Qe1 Qxe1+ Rxe1 Rxb3 Re4 Rb1+ Ke2 Rb2+ Kd3 
                              Rxg2 Rxf4+ Ke7 Re4+ Kd7 Rxh4 Rh2 
17     -1.62   00:42    4907k Kf1 Qc3 Qe1 Qxe1+ Rxe1 Rxb3 Re4 Rb1+ Ke2 Rb2+ Kd3 
                              Rxg2 Rxf4+ Ke7 Rxh4 Ra2 Rg4 g2 Ke4 Rxa4 Rxg2 
                              Rxc4+ Ke5 Kd7 Rg6 
17     -0.97   00:44    7413k Re1 Qd4+ Kh1 Kf7 Rf1 Ke7 Re1+ Kf6 Rf1 Kg5 Re1 Qc3 
                              Rd1 Rd2 Rxd2 Qxd2 Qa1 Qd4 Qe1 Kf5 Qb1+ Kg5 Qe1 
18     -0.93   00:44    9313k Re1 Qd4+ Kh1 Kf7 Rf1 Ke7 Re1+ Kf6 Rf1 Ke6 Re1+ 
                              Kd7 Rc1 Kc7 Re1 Kb7 Re7+ Kc8 Re1 Kd8 Rf1 Rd2 Qh7 
                              Re2 Qxh4+ Kc7 Qh7+ 
19     -1.21   00:45   11141k Re1 Qd4+ Kh1 Kf7 Rf1 Ke7 Re1+ Kf6 Rf1 Ke6 Re1+ 
                              Kd7 Qc2 Qc3 Qxc3 Rxc3 Rb1 Re3 Kg1 Ke7 Kf1 Kf6 Rd1 
                              Rxb3 Re1 Kf5 
20     -1.21   00:46   13454k Re1 Qd4+ Kh1 Kf7 Rf1 Ke7 Re1+ Kf6 Rf1 Ke6 Re1+ 
                              Kd7 Qc2 Qc3 Qxc3 Rxc3 Rb1 Kd6 Kg1 Rd3 Kf1 Rd2 Re1 
                              Rf2+ Kg1 Rb2 Rd1+ Kc6 Kf1 Rxb3 
21     -1.13   00:48   19205k Re1 Qd4+ Kh1 Kf7 Rf1 Ke7 Re1+ Kf6 Rf1 Ke6 Re1+ 
                              Kd7 Rc1 Kc7 Re1 Kd8 Qc2 Qc3 Qxc3 Rxc3 Rb1 Ke7 Kg1 
                              Re3 Kf1 Kf6 Rb2 Kf5 Rb1 Kg5 Rb2 Kf6 Rd2 Rxb3 Rd1 
                              Rb2 
22     -1.13   00:50   24016k Re1 Qd4+ Kh1 Kf7 Rf1 Ke7 Re1+ Kf6 Rf1 Ke6 Re1+ 
                              Kd7 Rc1 Kc7 Re1 Kd8 Qc2 Qc3 Qxc3 Rxc3 Rb1 Ke7 Kg1 
                              Re3 Kf1 Kf6 Rb2 Kf5 Rb1 Kg5 Rb2 Kf6 Rd2 Rxb3 Rd1 
                              Rb2 
23  <  -1.33   00:54   34819k Re1 Qd4+ Kh1 Kf7 Rf1 Ke7 Re1+ Kf6 Rf1 Rd2 Qh7 Qf2 
                              Qxh4+ Ke6 Qg4+ Ke7 Qg7+ Kd6 Qf6+ Kc7 Qxf4+ Kb7 
                              Qe4+ Ka7 Qh7+ Ka6 
24     -1.33   01:00   49636k Re1 Qd4+ Kh1 Kf7 Rf1 Ke7 Re1+ Kf6 Qc2 Qf2 Qb1 Rd2 
                              Rg1 Kg7 Qa1+ Kh7 Qb1+ Kh6 Qc1 Kg6 Qb1+ Kf6 Qa1+ 
                              Rb2 Qd1 Qd4 Qc1 Rd2 Qe1 Rb2 Rf1 Rxb3 Qe8 Qxc4 Rd1 
                              Rd3 Qf8+ Kg6 Qe8+ Kh7 Re1 
Nodes: 54297662
Nodes/second: 880212
Best move: Re1
Ponder move: Qd4+
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Dann Corbit
Posts: 12778
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: interesting "avoid move" position

Post by Dann Corbit »

It looks lost to me no matter what move you make

Code: Select all

Analysis from C:\test\am-re8.epd   
12/29/2009 8:08:20 PM Level: 3600 Seconds
Analyzing engine: Stockfish-16s-x64-ja (Smooth)

1) Re8+;(?)             
    Avoid move: Re2-e8(?)
    Best move (Stockfish-16s-x64-ja (Smooth)): Re2-e1
    OK! Found in: 00:00
      2	00:00	         325	933	-0.76	Re2e8+ Kf8xe8 Qb1xd3 Qf6a1+ Qd3f1 Qa1d4+ Kg1h1
      2	00:00	         398	1.143	-0.56	Re2e4 Rd3d2
      2	00:00	         447	1.284	-0.32	Re2e5 Rd3d2
      2	00:00	         505	1.446	-0.24	Kg1f1 Qf6d4
      3	00:00	         958	2.744	-0.32	Kg1f1 Qf6d4 Qb1c2
      4	00:00	       1.420	4.057	-0.36	Kg1f1 Qf6d4 Qb1c2 Kf8f7
      5	00:00	       2.412	6.644	-1.05	Kg1f1 Qf6d4 Qb1e1 Rd3xb3 Qe1c1
      5	00:00	       7.662	20.820	-0.48	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7g8 Re7e1
      6-	00:00	       9.068	24.376	-0.76	Re2e1 Qf6d4+ Kg1h1 Kf8f7 Qb1c2 Qd4f2
      7	00:00	      12.782	33.904	-1.17	Re2e1 Qf6d4+ Kg1h1 Kf8f7 Re1c1 Kf7e6 Qb1c2 Rd3d2 Qc2g6+ Qd4f6
      7	00:00	      31.079	80.307	-0.44	Kg1f1 Qf6d6 Qb1c2 Qd6d4 Re2e6 Rd3d1+ Kf1e2 Rd1g1 Qc2f5+ Kf8g8
      8	00:00	      87.665	215.393	-0.60	Kg1f1 Qf6d6 Qb1c2 Kf8g7 Re2e4 Rd3d1+ Re4e1 Qd6d2 Qc2xd2 Rd1xd2 Re1e6
      9	00:00	      99.294	238.687	-0.68	Kg1f1 Qf6d4 Qb1e1 Rd3e3 Re2xe3 f4xe3 Qe1e2 Qd4c3 Qe2d1 Kf8e7 Kf1e2 Qc3b2+ Ke2xe3 Qb2xg2
     10-	00:00	     111.428	261.568	-1.01	Kg1f1 Qf6d4 Qb1e1 Rd3e3 Re2xe3 f4xe3 Qe1e2 Qd4c3 Qe2d1 Kf8e7 Kf1e2 Qc3b2+ Ke2xe3 Qb2xg2
     11	00:00	     161.604	358.323	-0.88	Kg1f1 Qf6d4 Qb1e1 Rd3e3 Re2xe3 f4xe3 Qe1e2 Qd4c3 Qe2d1 Kf8e7 Qd1b1 Ke7f6 Qb1d1 Qc3d4 Qd1e2 Kf6e5
     12	00:00	     329.371	669.453	-0.44	Kg1f1 Qf6d6 Qb1c2 Kf8g7 Re2e4 Rd3d1+ Re4e1 Rd1xe1+ Kf1xe1 Qd6d4 Ke1f1 Kg7f6 Qc2e2 Kf6f5
     13	00:00	     896.419	1.479.239	-0.92	Kg1f1 Qf6c3 Qb1e1 Qc3xe1+ Re2xe1 Rd3xb3 Re1e4 Rb3b1+ Kf1e2 Rb1b2+ Ke2f1 Rb2f2+ Kf1g1 Rf2a2 Re4xf4+ Kf8e7 Rf4e4+ Ke7d6 Kg1f1 Ra2f2+ Kf1g1
     14	00:00	   1.176.911	1.753.965	-1.53	Kg1f1 Qf6c3 Qb1e1 Qc3xe1+ Re2xe1 Rd3xb3 Re1e4 Rb3b1+ Kf1e2 Rb1b2+ Ke2f1 Rb2f2+ Kf1g1 Rf2a2 Re4xf4+ Kf8e7 Kg1f1 Ra2xa4 Rf4xh4 Ra4a1+ Kf1e2 Ra1a2+ Ke2f1 Ra2f2+ Kf1g1
     14	00:00	   1.442.691	1.979.000	-0.96	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3xd1+ Qb1xd1 Kg5g6 Qd1d6+ Qc3f6 Qd6d3+ Kg6f7 Qd3f1 Kf7e7 Qf1d1 Qf6d4 Qd1c1 Ke7d7
     15	00:00	   1.758.560	2.187.263	-1.01	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3d2 Rd1xd2 Qc3xd2 Qb1a1 Kg5f5 Qa1b1+ Kf5f6 Qb1a1+ Qd2d4 Qa1c1 Kf6f5 Qc1b1+ Kf5e5 Qb1e1+ Ke5d6 Qe1b1
     16	00:00	   2.174.201	2.423.858	-1.01	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3d2 Rd1xd2 Qc3xd2 Qb1a1 Kg5f5 Qa1b1+ Kf5f6 Qb1a1+ Kf6g6 Qa1b1+ Kg6h6 Qb1a1 Qd2d4 Qa1e1 Kh6g5 Qe1c1 Kg5f5 Qc1b1+ Kf5g5 Qb1e1 Kg5f5 Qe1b1+
     17	00:01	   2.722.803	2.695.844	-1.01	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3d2 Rd1xd2 Qc3xd2 Qb1a1 Kg5f5 Qa1b1+ Kf5f6 Qb1a1+ Kf6g6 Qa1b1+ Kg6h6 Qb1a1 Qd2d4 Qa1e1 Kh6g5 Qe1c1 Kg5f5 Qc1b1+ Kf5g5 Qb1e1 Kg5f5 Qe1b1+
     18	00:01	   3.579.362	2.631.883	-1.01	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3d2 Rd1xd2 Qc3xd2 Qb1a1 Kg5f5 Qa1b1+ Kf5f6 Qb1a1+ Kf6g6 Qa1b1+ Kg6h6 Qb1a1 Qd2d4 Qa1e1 Kh6g5 Qe1c1 Kg5f5 Qc1b1+ Kf5g5 Qb1e1 Kg5f5 Qe1b1+
     19	00:01	   6.481.086	3.499.506	-1.13	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Kh6g5 Kf1e1 Rc3c2 Ke1f1 Rc2f2+ Kf1g1 Rf2d2 Rb1e1 Kg5f6 Kg1f1 Rd2b2
     20	00:02	  10.216.741	3.928.004	-1.05	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Kh6g5 Kf1g1 Rc3e3 Kg1f1 Kg5f5 Rb1b2 Kf5f6 Rb2b1 Kf6f7 Rb1e1 Re3xb3 Re1e4 Rb3b1+ Kf1e2 Rb1b2+ Ke2f1 Kf7g6 Re4xf4 Rb2f2+ Kf1g1 Rf2d2 Rf4g4+ Kg6h5
     21-	00:03	  13.654.560	4.018.410	-1.33	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Rb1e1 Rc2f2+ Kf1g1 Rf2b2 Re1e6+ Kh6g5
     22	00:05	  21.277.266	4.249.503	-1.33	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Rb1d1 Kg5f6 Rd1b1 Rc2d2 Kg1f1 Rd2f2+ Kf1g1 Kf6f5 Rb1d1 Rf2b2 Rd1d5+ Kf5e6 Kg1f1 Rb2xb3 Kf1e2 Ke6f6 Rd5d6+ Kf6e7 Rd6d5 Rb3e3+ Ke2d2 Re3e6 Kd2d3
     23	00:09	  44.494.920	4.944.429	-1.53	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Kg5f5 Kg1f1 Kf5f6 Kf1g1 Kf6g5 Kg1h1 Rd2a2 Kh1g1 Ra2f2 Kg1h1 Rf2e2 Kh1g1 Kg5f6 Kg1h1 Kf6e7 Rb1d1 Ke7f6 Kh1g1 Kf6e7 Kg1f1 Re2f2+ Kf1g1 Rf2b2 Kg1f1 Rb2xb3 Kf1e2 Ke7e6 Ke2f1 Rb3b4 Rd1e1+ Ke6f6 Re1e4 Kf6f5
     24	00:18	 104.012.855	5.618.064	-1.65	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Kg5f5 Kg1f1 Kf5f6 Kf1g1 Kf6g5 Kg1h1 Rd2a2 Kh1g1 Ra2f2 Kg1h1 Rf2c2 Kh1g1 Rc2e2 Rb1c1 Kg5f6
     24	00:20	 117.345.162	5.678.449	-1.33	Re2e4 Rd3xb3 Qb1c1 Rb3c3 Qc1a1 Kf8f7 Re4xf4 Qf6xf4 Qa1xc3 Qf4f6 Qc3c1 Qf6d4+ Kg1h1 Kf7e8 Qc1e1+ Ke8d8 Qe1b1 Kd8c8 Qb1f1 Qd4d7 f3f4 Qd7xa4 f4f5 Qa4d7 f5f6 Qd7f7 Qf1f4 Qf7e6 Qf4f1
     25	00:26	 148.633.382	5.670.649	-1.61	Re2e4 Rd3xb3 Qb1c1 Rb3c3 Qc1xf4 Qf6xf4 Re4xf4+ Kf8e7 Kg1f1 Rc3c1+ Kf1e2 Rc1g1 Rf4xh4 Rg1xg2+ Ke2e3 Rg2a2 Rh4e4+ Ke7d6 Re4g4 Ra2xa4 h3h4 g3g2 Rg4xg2 Ra4xc4 h4h5 Rc4h4 Rg2g6+ Kd6e7 Rg6xb6 Rh4xh5 Ke3d3 a5a4 Rb6a6 Rh5h4
     26	00:46	 263.636.075	5.648.577	-1.69	Re2e4 Rd3xb3 Qb1c1 Rb3c3 Qc1xf4 Qf6xf4 Re4xf4+ Kf8e7 Kg1f1 Rc3a3 Rf4xh4 Ra3xa4 Rh4h6 Ra4xc4 Rh6xb6 Rc4c2 Rb6b3 Rc2f2+ Kf1g1 Rf2a2 Kg1f1 a5a4 Rb3e3+ Ke7d6 f3f4 Ra2f2+ Kf1g1 Rf2xf4 Re3xg3 Rf4b4 Rg3a3 c5c4 g2g4 Kd6c5 Kg1f1 Rb4b1+ Kf1e2 Rb1b2+ Ke2d1 Kc5b4 Ra3e3 a4a3
     27	01:13	 422.287.800	5.737.605	-1.97	Re2e4 Rd3xb3 Qb1c1 Rb3c3 Qc1xf4 Qf6xf4 Re4xf4+ Kf8e7 Kg1f1 Rc3a3 Rf4xh4 Ra3xa4 Rh4e4+ Ke7f6 Re4f4+ Kf6e5 Rf4e4+ Ke5f5 h3h4 Ra4b4 h4h5 Rb4b1+ Re4e1 Rb1xe1+ Kf1xe1 Kf5g5 Ke1e2 Kg5xh5 Ke2d3 Kh5g5 Kd3c2 Kg5f6 Kc2d2 Kf6e5 Kd2d3 a5a4 Kd3c3 a4a3 Kc3b3 Ke5d4 f3f4 a3a2 Kb3xa2 Kd4xc4
     27	01:34	 549.315.016	5.792.690	-1.57	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Rb1d1 Rf2b2 Kg1f1 Rb2xb3 Kf1e2 Rb3e3+ Ke2d2 Re3a3
     28	01:55	 677.234.374	5.859.239	-1.57	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Kg1h1 Kf5e6 Kh1g1 Ke6f6 Kg1h1 Kf6g6 Kh1g1 Rf2d2 Kg1f1 Kg6f6 Kf1g1
     29	02:48	 989.805.363	5.861.206	-1.69	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Kg1h1 Kf5e6 Kh1g1 Ke6f6 Kg1h1 Kf6e5 Kh1g1 Ke5d4 Rb1e1 Kd4c3 Re1e4 Rf2c2 Kg1f1 Kc3xb3 Re4xf4 Rc2xc4
     30	05:05	1.809.565.204	5.917.808	-1.85	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Kg1h1 Kf5e6 Kh1g1 Ke6f6 Kg1h1 Kf6e5 Kh1g1 Ke5d4 Kg1h1 Kd4c3 Kh1g1 Rf2b2 Rb1d1 Kc3xb3
     31	07:50	2.749.034,854	5.847.260	-1.85	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Kg1h1 Kf5e6 Kh1g1 Ke6f6 Kg1h1 Kf6e5 Kh1g1 Ke5d4 Kg1h1 Kd4c3 Kh1g1 Rf2b2 Rb1d1 Kc3xb3
     32-	12:59	4.575.128,488	5.867.981	-2.06	Re2e1 Qf6c3 Re1c1 Qc3xb3
     33	21:07	7.421.067,727	5.854.887	-1.97	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Kg1h1 Kg7f6 Re1g1 Rd3c3 Rg1d1 Qd2c2 Qb1a1 Kf6e7 Rd1e1+ Ke7f7 Re1g1 Kf7g6 Qa1e1 Rc3e3 Qe1a1 Qc2xb3 Rg1d1 Re3c3 Rd1d7 Kg6f5 Qa1e1 Rc3e3 Qe1a1 Qb3xc4 Qa1b1+ Kf5e5 Rd7e7+ Ke5d6 Re7b7 Re3b3 Rb7xb6+ Rb3xb6 Qb1xb6+ Kd6d7 Qb6a7+ Kd7d6 Qa7b6+ Kd6d5 Qb6b7+ Kd5d4 Qb7e4+ Kd4c3
     34	34:24	12.055.831,371	5.838.514	-2.14	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Kg1h1 Kg7f6 Re1g1 Rd3c3 Rg1d1 Qd2c2 Qb1a1 Kf6e7 Rd1e1+ Ke7f7 Re1g1 Kf7g6 Qa1e1 Rc3e3 Qe1a1 Qc2xb3 Rg1d1 Re3c3 Rd1d7 Kg6f5 Qa1e1 Rc3e3 Qe1a1 Qb3xc4 Qa1b1+ Kf5f6 Qb1xb6+ Qc4e6 Qb6b2+ Re3e5 Rd7d1 Kf6g5 Qb2c3 c5c4 Qc3a1 Qe6e7 Qa1c3 Qe7c5
   12/29/2009 8:45:10 PM, Time for this analysis: 00:36:44, Rated time: 00:00

1 of 1 matching moves
12/29/2009 8:45:11 PM, Total time: 12:36:50 AM
Rated time: 00:00 = 0 Seconds
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michiguel
Posts: 6401
Joined: Thu Mar 09, 2006 8:30 pm
Location: Chicago, Illinois, USA

Re: interesting "avoid move" position

Post by michiguel »

Dann Corbit wrote:It looks lost to me no matter what move you make

Code: Select all

Analysis from C:\test\am-re8.epd   
12/29/2009 8:08:20 PM Level: 3600 Seconds
Analyzing engine: Stockfish-16s-x64-ja (Smooth)

1) Re8+;(?)             
    Avoid move: Re2-e8(?)
    Best move (Stockfish-16s-x64-ja (Smooth)): Re2-e1
    OK! Found in: 00:00
      2	00:00	         325	933	-0.76	Re2e8+ Kf8xe8 Qb1xd3 Qf6a1+ Qd3f1 Qa1d4+ Kg1h1
      2	00:00	         398	1.143	-0.56	Re2e4 Rd3d2
      2	00:00	         447	1.284	-0.32	Re2e5 Rd3d2
      2	00:00	         505	1.446	-0.24	Kg1f1 Qf6d4
      3	00:00	         958	2.744	-0.32	Kg1f1 Qf6d4 Qb1c2
      4	00:00	       1.420	4.057	-0.36	Kg1f1 Qf6d4 Qb1c2 Kf8f7
      5	00:00	       2.412	6.644	-1.05	Kg1f1 Qf6d4 Qb1e1 Rd3xb3 Qe1c1
      5	00:00	       7.662	20.820	-0.48	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7g8 Re7e1
      6-	00:00	       9.068	24.376	-0.76	Re2e1 Qf6d4+ Kg1h1 Kf8f7 Qb1c2 Qd4f2
      7	00:00	      12.782	33.904	-1.17	Re2e1 Qf6d4+ Kg1h1 Kf8f7 Re1c1 Kf7e6 Qb1c2 Rd3d2 Qc2g6+ Qd4f6
      7	00:00	      31.079	80.307	-0.44	Kg1f1 Qf6d6 Qb1c2 Qd6d4 Re2e6 Rd3d1+ Kf1e2 Rd1g1 Qc2f5+ Kf8g8
      8	00:00	      87.665	215.393	-0.60	Kg1f1 Qf6d6 Qb1c2 Kf8g7 Re2e4 Rd3d1+ Re4e1 Qd6d2 Qc2xd2 Rd1xd2 Re1e6
      9	00:00	      99.294	238.687	-0.68	Kg1f1 Qf6d4 Qb1e1 Rd3e3 Re2xe3 f4xe3 Qe1e2 Qd4c3 Qe2d1 Kf8e7 Kf1e2 Qc3b2+ Ke2xe3 Qb2xg2
     10-	00:00	     111.428	261.568	-1.01	Kg1f1 Qf6d4 Qb1e1 Rd3e3 Re2xe3 f4xe3 Qe1e2 Qd4c3 Qe2d1 Kf8e7 Kf1e2 Qc3b2+ Ke2xe3 Qb2xg2
     11	00:00	     161.604	358.323	-0.88	Kg1f1 Qf6d4 Qb1e1 Rd3e3 Re2xe3 f4xe3 Qe1e2 Qd4c3 Qe2d1 Kf8e7 Qd1b1 Ke7f6 Qb1d1 Qc3d4 Qd1e2 Kf6e5
     12	00:00	     329.371	669.453	-0.44	Kg1f1 Qf6d6 Qb1c2 Kf8g7 Re2e4 Rd3d1+ Re4e1 Rd1xe1+ Kf1xe1 Qd6d4 Ke1f1 Kg7f6 Qc2e2 Kf6f5
     13	00:00	     896.419	1.479.239	-0.92	Kg1f1 Qf6c3 Qb1e1 Qc3xe1+ Re2xe1 Rd3xb3 Re1e4 Rb3b1+ Kf1e2 Rb1b2+ Ke2f1 Rb2f2+ Kf1g1 Rf2a2 Re4xf4+ Kf8e7 Rf4e4+ Ke7d6 Kg1f1 Ra2f2+ Kf1g1
     14	00:00	   1.176.911	1.753.965	-1.53	Kg1f1 Qf6c3 Qb1e1 Qc3xe1+ Re2xe1 Rd3xb3 Re1e4 Rb3b1+ Kf1e2 Rb1b2+ Ke2f1 Rb2f2+ Kf1g1 Rf2a2 Re4xf4+ Kf8e7 Kg1f1 Ra2xa4 Rf4xh4 Ra4a1+ Kf1e2 Ra1a2+ Ke2f1 Ra2f2+ Kf1g1
     14	00:00	   1.442.691	1.979.000	-0.96	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3xd1+ Qb1xd1 Kg5g6 Qd1d6+ Qc3f6 Qd6d3+ Kg6f7 Qd3f1 Kf7e7 Qf1d1 Qf6d4 Qd1c1 Ke7d7
     15	00:00	   1.758.560	2.187.263	-1.01	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3d2 Rd1xd2 Qc3xd2 Qb1a1 Kg5f5 Qa1b1+ Kf5f6 Qb1a1+ Qd2d4 Qa1c1 Kf6f5 Qc1b1+ Kf5e5 Qb1e1+ Ke5d6 Qe1b1
     16	00:00	   2.174.201	2.423.858	-1.01	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3d2 Rd1xd2 Qc3xd2 Qb1a1 Kg5f5 Qa1b1+ Kf5f6 Qb1a1+ Kf6g6 Qa1b1+ Kg6h6 Qb1a1 Qd2d4 Qa1e1 Kh6g5 Qe1c1 Kg5f5 Qc1b1+ Kf5g5 Qb1e1 Kg5f5 Qe1b1+
     17	00:01	   2.722.803	2.695.844	-1.01	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3d2 Rd1xd2 Qc3xd2 Qb1a1 Kg5f5 Qa1b1+ Kf5f6 Qb1a1+ Kf6g6 Qa1b1+ Kg6h6 Qb1a1 Qd2d4 Qa1e1 Kh6g5 Qe1c1 Kg5f5 Qc1b1+ Kf5g5 Qb1e1 Kg5f5 Qe1b1+
     18	00:01	   3.579.362	2.631.883	-1.01	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3d2 Rd1xd2 Qc3xd2 Qb1a1 Kg5f5 Qa1b1+ Kf5f6 Qb1a1+ Kf6g6 Qa1b1+ Kg6h6 Qb1a1 Qd2d4 Qa1e1 Kh6g5 Qe1c1 Kg5f5 Qc1b1+ Kf5g5 Qb1e1 Kg5f5 Qe1b1+
     19	00:01	   6.481.086	3.499.506	-1.13	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Kh6g5 Kf1e1 Rc3c2 Ke1f1 Rc2f2+ Kf1g1 Rf2d2 Rb1e1 Kg5f6 Kg1f1 Rd2b2
     20	00:02	  10.216.741	3.928.004	-1.05	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Kh6g5 Kf1g1 Rc3e3 Kg1f1 Kg5f5 Rb1b2 Kf5f6 Rb2b1 Kf6f7 Rb1e1 Re3xb3 Re1e4 Rb3b1+ Kf1e2 Rb1b2+ Ke2f1 Kf7g6 Re4xf4 Rb2f2+ Kf1g1 Rf2d2 Rf4g4+ Kg6h5
     21-	00:03	  13.654.560	4.018.410	-1.33	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Rb1e1 Rc2f2+ Kf1g1 Rf2b2 Re1e6+ Kh6g5
     22	00:05	  21.277.266	4.249.503	-1.33	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Rb1d1 Kg5f6 Rd1b1 Rc2d2 Kg1f1 Rd2f2+ Kf1g1 Kf6f5 Rb1d1 Rf2b2 Rd1d5+ Kf5e6 Kg1f1 Rb2xb3 Kf1e2 Ke6f6 Rd5d6+ Kf6e7 Rd6d5 Rb3e3+ Ke2d2 Re3e6 Kd2d3
     23	00:09	  44.494.920	4.944.429	-1.53	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Kg5f5 Kg1f1 Kf5f6 Kf1g1 Kf6g5 Kg1h1 Rd2a2 Kh1g1 Ra2f2 Kg1h1 Rf2e2 Kh1g1 Kg5f6 Kg1h1 Kf6e7 Rb1d1 Ke7f6 Kh1g1 Kf6e7 Kg1f1 Re2f2+ Kf1g1 Rf2b2 Kg1f1 Rb2xb3 Kf1e2 Ke7e6 Ke2f1 Rb3b4 Rd1e1+ Ke6f6 Re1e4 Kf6f5
     24	00:18	 104.012.855	5.618.064	-1.65	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Kg5f5 Kg1f1 Kf5f6 Kf1g1 Kf6g5 Kg1h1 Rd2a2 Kh1g1 Ra2f2 Kg1h1 Rf2c2 Kh1g1 Rc2e2 Rb1c1 Kg5f6
     24	00:20	 117.345.162	5.678.449	-1.33	Re2e4 Rd3xb3 Qb1c1 Rb3c3 Qc1a1 Kf8f7 Re4xf4 Qf6xf4 Qa1xc3 Qf4f6 Qc3c1 Qf6d4+ Kg1h1 Kf7e8 Qc1e1+ Ke8d8 Qe1b1 Kd8c8 Qb1f1 Qd4d7 f3f4 Qd7xa4 f4f5 Qa4d7 f5f6 Qd7f7 Qf1f4 Qf7e6 Qf4f1
     25	00:26	 148.633.382	5.670.649	-1.61	Re2e4 Rd3xb3 Qb1c1 Rb3c3 Qc1xf4 Qf6xf4 Re4xf4+ Kf8e7 Kg1f1 Rc3c1+ Kf1e2 Rc1g1 Rf4xh4 Rg1xg2+ Ke2e3 Rg2a2 Rh4e4+ Ke7d6 Re4g4 Ra2xa4 h3h4 g3g2 Rg4xg2 Ra4xc4 h4h5 Rc4h4 Rg2g6+ Kd6e7 Rg6xb6 Rh4xh5 Ke3d3 a5a4 Rb6a6 Rh5h4
     26	00:46	 263.636.075	5.648.577	-1.69	Re2e4 Rd3xb3 Qb1c1 Rb3c3 Qc1xf4 Qf6xf4 Re4xf4+ Kf8e7 Kg1f1 Rc3a3 Rf4xh4 Ra3xa4 Rh4h6 Ra4xc4 Rh6xb6 Rc4c2 Rb6b3 Rc2f2+ Kf1g1 Rf2a2 Kg1f1 a5a4 Rb3e3+ Ke7d6 f3f4 Ra2f2+ Kf1g1 Rf2xf4 Re3xg3 Rf4b4 Rg3a3 c5c4 g2g4 Kd6c5 Kg1f1 Rb4b1+ Kf1e2 Rb1b2+ Ke2d1 Kc5b4 Ra3e3 a4a3
     27	01:13	 422.287.800	5.737.605	-1.97	Re2e4 Rd3xb3 Qb1c1 Rb3c3 Qc1xf4 Qf6xf4 Re4xf4+ Kf8e7 Kg1f1 Rc3a3 Rf4xh4 Ra3xa4 Rh4e4+ Ke7f6 Re4f4+ Kf6e5 Rf4e4+ Ke5f5 h3h4 Ra4b4 h4h5 Rb4b1+ Re4e1 Rb1xe1+ Kf1xe1 Kf5g5 Ke1e2 Kg5xh5 Ke2d3 Kh5g5 Kd3c2 Kg5f6 Kc2d2 Kf6e5 Kd2d3 a5a4 Kd3c3 a4a3 Kc3b3 Ke5d4 f3f4 a3a2 Kb3xa2 Kd4xc4
     27	01:34	 549.315.016	5.792.690	-1.57	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Rb1d1 Rf2b2 Kg1f1 Rb2xb3 Kf1e2 Rb3e3+ Ke2d2 Re3a3
     28	01:55	 677.234.374	5.859.239	-1.57	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Kg1h1 Kf5e6 Kh1g1 Ke6f6 Kg1h1 Kf6g6 Kh1g1 Rf2d2 Kg1f1 Kg6f6 Kf1g1
     29	02:48	 989.805.363	5.861.206	-1.69	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Kg1h1 Kf5e6 Kh1g1 Ke6f6 Kg1h1 Kf6e5 Kh1g1 Ke5d4 Rb1e1 Kd4c3 Re1e4 Rf2c2 Kg1f1 Kc3xb3 Re4xf4 Rc2xc4
     30	05:05	1.809.565.204	5.917.808	-1.85	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Kg1h1 Kf5e6 Kh1g1 Ke6f6 Kg1h1 Kf6e5 Kh1g1 Ke5d4 Kg1h1 Kd4c3 Kh1g1 Rf2b2 Rb1d1 Kc3xb3
     31	07:50	2.749.034,854	5.847.260	-1.85	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Kg1h1 Kf5e6 Kh1g1 Ke6f6 Kg1h1 Kf6e5 Kh1g1 Ke5d4 Kg1h1 Kd4c3 Kh1g1 Rf2b2 Rb1d1 Kc3xb3
     32-	12:59	4.575.128,488	5.867.981	-2.06	Re2e1 Qf6c3 Re1c1 Qc3xb3
     33	21:07	7.421.067,727	5.854.887	-1.97	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Kg1h1 Kg7f6 Re1g1 Rd3c3 Rg1d1 Qd2c2 Qb1a1 Kf6e7 Rd1e1+ Ke7f7 Re1g1 Kf7g6 Qa1e1 Rc3e3 Qe1a1 Qc2xb3 Rg1d1 Re3c3 Rd1d7 Kg6f5 Qa1e1 Rc3e3 Qe1a1 Qb3xc4 Qa1b1+ Kf5e5 Rd7e7+ Ke5d6 Re7b7 Re3b3 Rb7xb6+ Rb3xb6 Qb1xb6+ Kd6d7 Qb6a7+ Kd7d6 Qa7b6+ Kd6d5 Qb6b7+ Kd5d4 Qb7e4+ Kd4c3
     34	34:24	12.055.831,371	5.838.514	-2.14	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Kg1h1 Kg7f6 Re1g1 Rd3c3 Rg1d1 Qd2c2 Qb1a1 Kf6e7 Rd1e1+ Ke7f7 Re1g1 Kf7g6 Qa1e1 Rc3e3 Qe1a1 Qc2xb3 Rg1d1 Re3c3 Rd1d7 Kg6f5 Qa1e1 Rc3e3 Qe1a1 Qb3xc4 Qa1b1+ Kf5f6 Qb1xb6+ Qc4e6 Qb6b2+ Re3e5 Rd7d1 Kf6g5 Qb2c3 c5c4 Qc3a1 Qe6e7 Qa1c3 Qe7c5
   12/29/2009 8:45:10 PM, Time for this analysis: 00:36:44, Rated time: 00:00

1 of 1 matching moves
12/29/2009 8:45:11 PM, Total time: 12:36:50 AM
Rated time: 00:00 = 0 Seconds
I think this may be a more straightforward position
[d]4k3/8/1p3q2/p1p5/P1P2p1p/1P1Q1PpP/6P1/6K1 b - - 0 56 bm Qd4+

Miguel
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: interesting "avoid move" position

Post by zullil »

michiguel wrote:
I think this may be a more straightforward position
[d]4k3/8/1p3q2/p1p5/P1P2p1p/1P1Q1PpP/6P1/6K1 b - - 0 56 bm Qd4+

Miguel
Stockfish-1.6SmoothReduct--icc--x86_64--pgo--2threads sees it:

Code: Select all

Searching: 4k3/8/1p3q2/p1p5/P1P2p1p/1P1Q1PpP/6P1/6K1 b - -
infinite: 0 ponder: 0 time: 0 increment: 0 moves to go: 0
 2     +0.53   00:02      304 Qd4+ Qxd4 cxd4 Kf1 
 2     +0.77   00:02      366 Qa1+ Qf1 Qd4+ Kh1 
 3     +1.01   00:02      553 Qa1+ Qf1 Qd4+ Kh1 Kd7 
 4     +1.01   00:02      943 Qa1+ Qf1 Qd4+ Kh1 Kd7 Qe1 
 5     +0.85   00:02     2047 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 
 6     +1.13   00:02     4000 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 Qe1+ Kd6 Qd1+ Qd4 
                              Qe1 
 7     +0.89   00:02    14444 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 Qe1+ Kd6 Qd1+ Qd4 
                              Qe1 Qd3 Qa1 Ke6 Qe1+ Kf5 
 8     +0.97   00:02    18504 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 Qe1+ Kd6 Qd1+ Qd4 
                              Qc1 Ke6 Qe1+ Kf5 Qb1+ Kg5 Qe1 
 9     +1.01   00:02    25910 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 Qe1+ Kd6 Qd1+ Qd4 
                              Qc1 Ke6 Qe1+ Kf5 Qb1+ Kg5 Qe1 
10     +1.01   00:02    32157 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 Qe1+ Kd6 Qd1+ Qd4 
                              Qc1 Ke6 Qe1+ Kf5 Qb1+ Kg5 Qe1 
11     +1.01   00:02    45694 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 Qe1+ Kd6 Qd1+ Qd4 
                              Qc1 Ke6 Qe1+ Kf5 Qb1+ Kg5 Qe1 Kf6 Qc1 Ke6 
12     +1.01   00:02    72264 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 Qe1+ Kd6 Qd1+ Qd4 
                              Qc1 Ke6 Qe1+ Kf5 Qb1+ Kg5 Qe1 Kf6 Qc1 Ke5 Qe1+ 
                              Kd6 Qc1 
13     +0.89   00:03   179223 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 Qe1+ Kd6 Qd1+ Qd4 
                              Qc1 Ke6 Qe1+ Kf5 Qb1+ Kg5 Qe1 Kf6 Qc1 Ke7 Qe1+ 
                              Kf7 Qc1 Kf6 Qb1 Qd2 Kg1 Qe3+ Kh1 Ke5 Qd1 
14     +0.89   00:03   212174 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 Qe1+ Kd6 Qd1+ Qd4 
                              Qc1 Ke6 Qe1+ Kf5 Qb1+ Kg5 Qe1 Kf6 Qc1 Ke7 Qe1+ 
                              Kd7 Qb1 Kd8 Qf1 Ke7 Qe1+ 
15     +0.93   00:03   308778 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 Qe1+ Kd6 Qd1+ Qd4 
                              Qc1 Ke6 Qe1+ Kf5 Qb1+ Kg5 Qe1 Kf6 Qc1 Ke7 Qb1 Kf6 
                              Qc1 
16     +0.89   00:03   445239 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 Qe1+ Kd6 Qd1+ Qd4 
                              Qc1 Ke6 Qe1+ Kf5 Qb1+ Ke5 Qe1+ Kf6 Qc1 Ke7 Qb1 
                              Kd8 Qf1 Qd2 Qa1 Kd7 Qg7+ Kd6 Qf6+ Kc7 Qe5+ Kc6 
                              Qe6+ Kc7 Qe7+ Kc6 Qe6+ 
17     +1.01   00:03   786041 Qa1+ Qf1 Qd4+ Kh1 Qb2 Qd1 Ke7 Qe1+ Kd6 Qd1+ Qd4 
                              Qc1 Ke6 Qe1+ Kf5 Qb1+ Ke5 Qe1+ Kf6 Qc1 Ke7 Qb1 
                              Kd8 Qf1 Qd2 Qb1 Kc7 Qh7+ Kc6 Qb1 
17  >  +1.09   00:03   973251 Qd4+ Qxd4 cxd4 Kf1 Ke7 Ke2 Kd6 Kd3 Kc5 Ke4 Kb4 
                              Kxf4 d3 Ke3 Kc3 f4 d2 Ke2 Kc2 
18  >  +1.94   00:03    1045k Qd4+ Qxd4 cxd4 Kf1 Ke7 Ke2 Kd6 Kd3 Kc5 Ke4 Kb4 
                              Kxf4 d3 Ke3 Kc3 f4 d2 Ke2 Kc2 
19     +2.18   00:03    1164k Qd4+ Qxd4 cxd4 Kf1 Ke7 Ke2 Kd6 Kd3 Kc5 Ke4 Kb4 
                              Kxd4 Kxb3 c5 bxc5+ Kxc5 Kxa4 Kc4 Ka3 Kc3 a4 Kc2 
                              Ka2 Kc3 a3 Kc4 
20     +2.83   00:03    1720k Qd4+ Qxd4 cxd4 Kf1 Ke7 Ke2 Kd6 Kd3 Kc5 Ke4 Kb4 
                              Kxd4 Kxb3 c5 bxc5+ Kxc5 Kxa4 Kc4 Ka3 Kc3 a4 Kc2 
                              Kb4 Kb2 a3+ Kb1 Ka5 Ka1 Kb5 Kb1 
21  >  +4.73   00:04    3830k Qd4+ Qxd4 cxd4 Kf1 Ke7 Ke2 Kd6 Kd3 Kc5 Ke4 Kb4 
                              Kxd4 Kxb3 c5 bxc5+ Kxc5 Kxa4 Kc4 Ka3 Kc3 a4 Kc2 
                              Kb4 Kb2 Kc4 Kc2 Kd4 Kd2 a3 Kc2 a2 Kb2 Ke3 
22     +6.34   00:04    4461k Qd4+ Qxd4 cxd4 Kf1 Ke7 Ke2 Kd6 Kd3 Kc5 Ke4 Kb4 
                              Kxd4 Kxb3 c5 bxc5+ Kxc5 Kxa4 Kc4 Ka3 Kc3 a4 Kc2 
                              Kb4 Kb2 Kc4 Ka3 Kd4 Kxa4 Ke3 Kb3 Kf2 Kc2 Kxg2 Kd3 
                              Kxh3 
23     +9.13   00:05    6392k Qd4+ Qxd4 cxd4 Kf1 Ke7 Ke2 Kd6 Kd3 Kc5 Ke4 Kb4 
                              Kxd4 Kxb3 Kd5 Kb4 Kd6 Kxc4 Ke5 b5 axb5 Kxb5 Kxf4 
                              a4 Kg4 a3 Kxh4 Kc4 Kxg3 a2 Kf4 a1=Q g4 Qf6+ Ke4 
                              Qc6+ Kf4 Qc7+ Ke3 Qe5+ Kd2 Qh2+ 
24    +10.10   00:06    9485k Qd4+ Qxd4 cxd4 Kf1 Ke7 Ke2 Kd6 Kd3 Kc5 Ke4 Kb4 
                              Kxd4 Kxb3 Kd5 Kb4 Kd6 Kxc4 Ke5 b5 axb5 Kxb5 Kxf4 
                              a4 Kg4 a3 Kxh4 a2 Kxg3 a1=Q Kh4 Qf6+ Kg3 Qg7+ Kf2 
                              Qd4+ Ke2 Kc4 g4 Qg1 h4 Kd4 g5 Qh2+ Kd1 Qxh4 
25    +11.31   00:08   15255k Qd4+ Qxd4 cxd4 Kf1 Ke7 Ke2 Kd6 Kd3 Kc5 Ke4 Kb4 
                              Kxd4 Kxb3 Kd5 Kb4 Kd6 Kxc4 Ke5 b5 axb5 Kxb5 Kxf4 
                              a4 Kg4 a3 Kxh4 a2 Kxg3 a1=Q Kh4 Qf6+ Kg3 Qg5+ Kf2 
                              Kc4 Kf1 Qh4 Kg1 Qe1+ Kh2 Kd3 f4 Qf2 f5 Qxf5 
Nodes: 16962786
Nodes/second: 1985344
Best move: Qd4+
Ponder move: Qxd4
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User avatar
Eelco de Groot
Posts: 4661
Joined: Sun Mar 12, 2006 2:40 am
Full name:   Eelco de Groot

Re: interesting "avoid move" position

Post by Eelco de Groot »

Dann Corbit wrote:It looks lost to me no matter what move you make

Code: Select all

Analysis from C:\test\am-re8.epd   
12/29/2009 8:08:20 PM Level: 3600 Seconds
Analyzing engine: Stockfish-16s-x64-ja (Smooth)

1) Re8+;(?)             
    Avoid move: Re2-e8(?)
    Best move (Stockfish-16s-x64-ja (Smooth)): Re2-e1
    OK! Found in: 00:00
      2	00:00	         325	933	-0.76	Re2e8+ Kf8xe8 Qb1xd3 Qf6a1+ Qd3f1 Qa1d4+ Kg1h1
      2	00:00	         398	1.143	-0.56	Re2e4 Rd3d2
      2	00:00	         447	1.284	-0.32	Re2e5 Rd3d2
      2	00:00	         505	1.446	-0.24	Kg1f1 Qf6d4
      3	00:00	         958	2.744	-0.32	Kg1f1 Qf6d4 Qb1c2
      4	00:00	       1.420	4.057	-0.36	Kg1f1 Qf6d4 Qb1c2 Kf8f7
      5	00:00	       2.412	6.644	-1.05	Kg1f1 Qf6d4 Qb1e1 Rd3xb3 Qe1c1
      5	00:00	       7.662	20.820	-0.48	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7g8 Re7e1
      6-	00:00	       9.068	24.376	-0.76	Re2e1 Qf6d4+ Kg1h1 Kf8f7 Qb1c2 Qd4f2
      7	00:00	      12.782	33.904	-1.17	Re2e1 Qf6d4+ Kg1h1 Kf8f7 Re1c1 Kf7e6 Qb1c2 Rd3d2 Qc2g6+ Qd4f6
      7	00:00	      31.079	80.307	-0.44	Kg1f1 Qf6d6 Qb1c2 Qd6d4 Re2e6 Rd3d1+ Kf1e2 Rd1g1 Qc2f5+ Kf8g8
      8	00:00	      87.665	215.393	-0.60	Kg1f1 Qf6d6 Qb1c2 Kf8g7 Re2e4 Rd3d1+ Re4e1 Qd6d2 Qc2xd2 Rd1xd2 Re1e6
      9	00:00	      99.294	238.687	-0.68	Kg1f1 Qf6d4 Qb1e1 Rd3e3 Re2xe3 f4xe3 Qe1e2 Qd4c3 Qe2d1 Kf8e7 Kf1e2 Qc3b2+ Ke2xe3 Qb2xg2
     10-	00:00	     111.428	261.568	-1.01	Kg1f1 Qf6d4 Qb1e1 Rd3e3 Re2xe3 f4xe3 Qe1e2 Qd4c3 Qe2d1 Kf8e7 Kf1e2 Qc3b2+ Ke2xe3 Qb2xg2
     11	00:00	     161.604	358.323	-0.88	Kg1f1 Qf6d4 Qb1e1 Rd3e3 Re2xe3 f4xe3 Qe1e2 Qd4c3 Qe2d1 Kf8e7 Qd1b1 Ke7f6 Qb1d1 Qc3d4 Qd1e2 Kf6e5
     12	00:00	     329.371	669.453	-0.44	Kg1f1 Qf6d6 Qb1c2 Kf8g7 Re2e4 Rd3d1+ Re4e1 Rd1xe1+ Kf1xe1 Qd6d4 Ke1f1 Kg7f6 Qc2e2 Kf6f5
     13	00:00	     896.419	1.479.239	-0.92	Kg1f1 Qf6c3 Qb1e1 Qc3xe1+ Re2xe1 Rd3xb3 Re1e4 Rb3b1+ Kf1e2 Rb1b2+ Ke2f1 Rb2f2+ Kf1g1 Rf2a2 Re4xf4+ Kf8e7 Rf4e4+ Ke7d6 Kg1f1 Ra2f2+ Kf1g1
     14	00:00	   1.176.911	1.753.965	-1.53	Kg1f1 Qf6c3 Qb1e1 Qc3xe1+ Re2xe1 Rd3xb3 Re1e4 Rb3b1+ Kf1e2 Rb1b2+ Ke2f1 Rb2f2+ Kf1g1 Rf2a2 Re4xf4+ Kf8e7 Kg1f1 Ra2xa4 Rf4xh4 Ra4a1+ Kf1e2 Ra1a2+ Ke2f1 Ra2f2+ Kf1g1
     14	00:00	   1.442.691	1.979.000	-0.96	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3xd1+ Qb1xd1 Kg5g6 Qd1d6+ Qc3f6 Qd6d3+ Kg6f7 Qd3f1 Kf7e7 Qf1d1 Qf6d4 Qd1c1 Ke7d7
     15	00:00	   1.758.560	2.187.263	-1.01	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3d2 Rd1xd2 Qc3xd2 Qb1a1 Kg5f5 Qa1b1+ Kf5f6 Qb1a1+ Qd2d4 Qa1c1 Kf6f5 Qc1b1+ Kf5e5 Qb1e1+ Ke5d6 Qe1b1
     16	00:00	   2.174.201	2.423.858	-1.01	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3d2 Rd1xd2 Qc3xd2 Qb1a1 Kg5f5 Qa1b1+ Kf5f6 Qb1a1+ Kf6g6 Qa1b1+ Kg6h6 Qb1a1 Qd2d4 Qa1e1 Kh6g5 Qe1c1 Kg5f5 Qc1b1+ Kf5g5 Qb1e1 Kg5f5 Qe1b1+
     17	00:01	   2.722.803	2.695.844	-1.01	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3d2 Rd1xd2 Qc3xd2 Qb1a1 Kg5f5 Qa1b1+ Kf5f6 Qb1a1+ Kf6g6 Qa1b1+ Kg6h6 Qb1a1 Qd2d4 Qa1e1 Kh6g5 Qe1c1 Kg5f5 Qc1b1+ Kf5g5 Qb1e1 Kg5f5 Qe1b1+
     18	00:01	   3.579.362	2.631.883	-1.01	Re2e1 Qf6d4+ Kg1h1 Kf8g7 Re1e7+ Kg7f6 Re7e1 Kf6g5 Re1f1 Qd4c3 Rf1d1 Rd3d2 Rd1xd2 Qc3xd2 Qb1a1 Kg5f5 Qa1b1+ Kf5f6 Qb1a1+ Kf6g6 Qa1b1+ Kg6h6 Qb1a1 Qd2d4 Qa1e1 Kh6g5 Qe1c1 Kg5f5 Qc1b1+ Kf5g5 Qb1e1 Kg5f5 Qe1b1+
     19	00:01	   6.481.086	3.499.506	-1.13	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Kh6g5 Kf1e1 Rc3c2 Ke1f1 Rc2f2+ Kf1g1 Rf2d2 Rb1e1 Kg5f6 Kg1f1 Rd2b2
     20	00:02	  10.216.741	3.928.004	-1.05	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Kh6g5 Kf1g1 Rc3e3 Kg1f1 Kg5f5 Rb1b2 Kf5f6 Rb2b1 Kf6f7 Rb1e1 Re3xb3 Re1e4 Rb3b1+ Kf1e2 Rb1b2+ Ke2f1 Kf7g6 Re4xf4 Rb2f2+ Kf1g1 Rf2d2 Rf4g4+ Kg6h5
     21-	00:03	  13.654.560	4.018.410	-1.33	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Rb1e1 Rc2f2+ Kf1g1 Rf2b2 Re1e6+ Kh6g5
     22	00:05	  21.277.266	4.249.503	-1.33	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Rb1d1 Kg5f6 Rd1b1 Rc2d2 Kg1f1 Rd2f2+ Kf1g1 Kf6f5 Rb1d1 Rf2b2 Rd1d5+ Kf5e6 Kg1f1 Rb2xb3 Kf1e2 Ke6f6 Rd5d6+ Kf6e7 Rd6d5 Rb3e3+ Ke2d2 Re3e6 Kd2d3
     23	00:09	  44.494.920	4.944.429	-1.53	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Kg5f5 Kg1f1 Kf5f6 Kf1g1 Kf6g5 Kg1h1 Rd2a2 Kh1g1 Ra2f2 Kg1h1 Rf2e2 Kh1g1 Kg5f6 Kg1h1 Kf6e7 Rb1d1 Ke7f6 Kh1g1 Kf6e7 Kg1f1 Re2f2+ Kf1g1 Rf2b2 Kg1f1 Rb2xb3 Kf1e2 Ke7e6 Ke2f1 Rb3b4 Rd1e1+ Ke6f6 Re1e4 Kf6f5
     24	00:18	 104.012.855	5.618.064	-1.65	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Kg5f5 Kg1f1 Kf5f6 Kf1g1 Kf6g5 Kg1h1 Rd2a2 Kh1g1 Ra2f2 Kg1h1 Rf2c2 Kh1g1 Rc2e2 Rb1c1 Kg5f6
     24	00:20	 117.345.162	5.678.449	-1.33	Re2e4 Rd3xb3 Qb1c1 Rb3c3 Qc1a1 Kf8f7 Re4xf4 Qf6xf4 Qa1xc3 Qf4f6 Qc3c1 Qf6d4+ Kg1h1 Kf7e8 Qc1e1+ Ke8d8 Qe1b1 Kd8c8 Qb1f1 Qd4d7 f3f4 Qd7xa4 f4f5 Qa4d7 f5f6 Qd7f7 Qf1f4 Qf7e6 Qf4f1
     25	00:26	 148.633.382	5.670.649	-1.61	Re2e4 Rd3xb3 Qb1c1 Rb3c3 Qc1xf4 Qf6xf4 Re4xf4+ Kf8e7 Kg1f1 Rc3c1+ Kf1e2 Rc1g1 Rf4xh4 Rg1xg2+ Ke2e3 Rg2a2 Rh4e4+ Ke7d6 Re4g4 Ra2xa4 h3h4 g3g2 Rg4xg2 Ra4xc4 h4h5 Rc4h4 Rg2g6+ Kd6e7 Rg6xb6 Rh4xh5 Ke3d3 a5a4 Rb6a6 Rh5h4
     26	00:46	 263.636.075	5.648.577	-1.69	Re2e4 Rd3xb3 Qb1c1 Rb3c3 Qc1xf4 Qf6xf4 Re4xf4+ Kf8e7 Kg1f1 Rc3a3 Rf4xh4 Ra3xa4 Rh4h6 Ra4xc4 Rh6xb6 Rc4c2 Rb6b3 Rc2f2+ Kf1g1 Rf2a2 Kg1f1 a5a4 Rb3e3+ Ke7d6 f3f4 Ra2f2+ Kf1g1 Rf2xf4 Re3xg3 Rf4b4 Rg3a3 c5c4 g2g4 Kd6c5 Kg1f1 Rb4b1+ Kf1e2 Rb1b2+ Ke2d1 Kc5b4 Ra3e3 a4a3
     27	01:13	 422.287.800	5.737.605	-1.97	Re2e4 Rd3xb3 Qb1c1 Rb3c3 Qc1xf4 Qf6xf4 Re4xf4+ Kf8e7 Kg1f1 Rc3a3 Rf4xh4 Ra3xa4 Rh4e4+ Ke7f6 Re4f4+ Kf6e5 Rf4e4+ Ke5f5 h3h4 Ra4b4 h4h5 Rb4b1+ Re4e1 Rb1xe1+ Kf1xe1 Kf5g5 Ke1e2 Kg5xh5 Ke2d3 Kh5g5 Kd3c2 Kg5f6 Kc2d2 Kf6e5 Kd2d3 a5a4 Kd3c3 a4a3 Kc3b3 Ke5d4 f3f4 a3a2 Kb3xa2 Kd4xc4
     27	01:34	 549.315.016	5.792.690	-1.57	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Rb1d1 Rf2b2 Kg1f1 Rb2xb3 Kf1e2 Rb3e3+ Ke2d2 Re3a3
     28	01:55	 677.234.374	5.859.239	-1.57	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Kg1h1 Kf5e6 Kh1g1 Ke6f6 Kg1h1 Kf6g6 Kh1g1 Rf2d2 Kg1f1 Kg6f6 Kf1g1
     29	02:48	 989.805.363	5.861.206	-1.69	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Kg1h1 Kf5e6 Kh1g1 Ke6f6 Kg1h1 Kf6e5 Kh1g1 Ke5d4 Rb1e1 Kd4c3 Re1e4 Rf2c2 Kg1f1 Kc3xb3 Re4xf4 Rc2xc4
     30	05:05	1.809.565.204	5.917.808	-1.85	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Kg1h1 Kf5e6 Kh1g1 Ke6f6 Kg1h1 Kf6e5 Kh1g1 Ke5d4 Kg1h1 Kd4c3 Kh1g1 Rf2b2 Rb1d1 Kc3xb3
     31	07:50	2.749.034,854	5.847.260	-1.85	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Qb1a1+ Qd2c3 Qa1xc3+ Rd3xc3 Re1b1 Kg7h6 Kg1f1 Rc3c2 Kf1g1 Kh6g5 Kg1h1 Rc2d2 Kh1g1 Rd2f2 Kg1h1 Kg5f6 Kh1g1 Kf6f5 Kg1h1 Kf5e6 Kh1g1 Ke6f6 Kg1h1 Kf6e5 Kh1g1 Ke5d4 Kg1h1 Kd4c3 Kh1g1 Rf2b2 Rb1d1 Kc3xb3
     32-	12:59	4.575.128,488	5.867.981	-2.06	Re2e1 Qf6c3 Re1c1 Qc3xb3
     33	21:07	7.421.067,727	5.854.887	-1.97	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Kg1h1 Kg7f6 Re1g1 Rd3c3 Rg1d1 Qd2c2 Qb1a1 Kf6e7 Rd1e1+ Ke7f7 Re1g1 Kf7g6 Qa1e1 Rc3e3 Qe1a1 Qc2xb3 Rg1d1 Re3c3 Rd1d7 Kg6f5 Qa1e1 Rc3e3 Qe1a1 Qb3xc4 Qa1b1+ Kf5e5 Rd7e7+ Ke5d6 Re7b7 Re3b3 Rb7xb6+ Rb3xb6 Qb1xb6+ Kd6d7 Qb6a7+ Kd7d6 Qa7b6+ Kd6d5 Qb6b7+ Kd5d4 Qb7e4+ Kd4c3
     34	34:24	12.055.831,371	5.838.514	-2.14	Re2e1 Qf6c3 Re1e4 Qc3d2 Re4e1 Kf8g7 Kg1h1 Kg7f6 Re1g1 Rd3c3 Rg1d1 Qd2c2 Qb1a1 Kf6e7 Rd1e1+ Ke7f7 Re1g1 Kf7g6 Qa1e1 Rc3e3 Qe1a1 Qc2xb3 Rg1d1 Re3c3 Rd1d7 Kg6f5 Qa1e1 Rc3e3 Qe1a1 Qb3xc4 Qa1b1+ Kf5f6 Qb1xb6+ Qc4e6 Qb6b2+ Re3e5 Rd7d1 Kf6g5 Qb2c3 c5c4 Qc3a1 Qe6e7 Qa1c3 Qe7c5
   12/29/2009 8:45:10 PM, Time for this analysis: 00:36:44, Rated time: 00:00

1 of 1 matching moves
12/29/2009 8:45:11 PM, Total time: 12:36:50 AM
Rated time: 00:00 = 0 Seconds
Off topic, but Marco is starting to sound just like Vas when he says:
mcostalba wrote: We are sorry it takes a bit of time, but we want to be sure 1.6 and 1.6.2 are 100% equivalent before to release.
It was like I heard Vas saying:
Not really Vas wrote: We are sorry it takes a bit of time, but we want to be sure Rybka 3 and Rybka 3+ are 100% equivalent before to release.
Only difference, that was 14 months ago and Vas never said sorry :D Overambitious projects...

I still think this result is very good and was wondering if it is much better than original Stockfish 1.6. I have not tried it but I think that Louis showed it was slower. Functionally the difference seems to be in the very first plies, which may explain why it works a little better and maybe there is less gain or even negative gain in longer games because of the higher selectivity. But impossible to say without tests.

I was happy to solve it (the first position) in more than three minutes:

[d]5k2/8/1p3q2/p1p5/P1P2p1p/1P1r1PpP/4R1P1/1Q4K1 w - -

Engine: Rainbow Serpent 1.5 Build 155 (Athlon 2009 MHz, 256 MB)
by Romstad, Costalba, Kiiski, De Groot

1.00 0:00 -0.32 1.Re8+ (223) 0

2.00 0:00 -1.13 1.Re8+ Kxe8 2.Qxd3 Qa1+ 3.Qf1 Qd4+
4.Kh1 Qd2 5.Qb1 Kd8 (12.269) 31

2.00 0:00 -0.88 1.Kf1 Qd8 2.Qe1 Rxb3 3.Re4 Qf6
4.Re8+ Kg7 5.Re7+ Kg6 (259.839) 369

3.00 0:00 -0.80 1.Kf1 Qd8 2.Qe1 Rxb3 3.Re4 Qf6
4.Re8+ Kg7 5.Re7+ Kg8 6.Re8+ Kf7
7.Qe4 Rb1+ (429.603) 465

4.01 0:01 -0.80 1.Kf1 Qd8 2.Qe1 Rxb3 3.Re4 Qf6
4.Re8+ Kf7 5.Re5 Rb2 6.Qe4 Rf2+
7.Kg1 (604.275) 544

5.01 0:08 -1.65 1.Kf1 Qc3 2.Qe1 Qxe1+ 3.Rxe1 Rxb3
4.Re4 Rb1+ 5.Ke2 Rb2+ 6.Kf1 Rf2+
7.Kg1 Ra2 8.Kf1 Rxa4 9.Rxf4+ Ke7
10.Rxh4 Ra1+ 11.Ke2 Ra2+ 12.Kf1 Rf2+
13.Kg1 a4 14.Rh7+ (7.960.690) 939

5.02 0:08 -1.13 1.Re8+ Kxe8 2.Qxd3 Qa1+ 3.Qf1 Qd4+
4.Kh1 Kf7 5.Qb1 Kf6 6.Qc1 Ke5 7.Qe1+ Kf5
8.Qb1+ Kg5 9.Qe1 Qe3 10.Qd1 (8.323.423) 946

6.01 0:09 -1.13 1.Re8+ Kxe8 2.Qxd3 Qa1+ 3.Qf1 Qd4+
4.Kh1 Kf7 5.Qb1 Kf6 6.Qc1 Ke5 7.Qe1+ Kf5
8.Qb1+ Kg5 9.Qe1 Qe3 10.Qd1 (8.955.347) 944

7.01 0:10 -1.13 1.Re8+ Kxe8 2.Qxd3 Qa1+ 3.Qf1 Qd4+
4.Kh1 Kf7 5.Qb1 Kf6 6.Qc1 Ke5 7.Qe1+ Kf5
8.Qb1+ Kg5 9.Qe1 Qe3 10.Qd1 (10.291.687) 944

8.01 0:12 -1.33-- 1.Re8+ Kxe8 2.Qxd3 Qa1+ 3.Qf1 Qb2
4.Qe1+ Kd7 5.Qd1+ Qd4+ 6.Qxd4+ cxd4
7.Kf1 Kd6 8.Ke2 Kc5 9.Kd3 Kb4
10.Kxd4 Kxb3 11.Kd5 Kxa4 12.c5 bxc5
13.Kxc5 Kb3 14.Kd5 (11.877.881) 951

9.01 0:26 -2.14-- 1.Re8+ Kxe8 2.Qxd3 Qa1+ 3.Qf1 Qb2
4.Qe1+ Kd7 5.Qd1+ Qd4+ 6.Qxd4+ cxd4
7.Kf1 Kd6 8.Ke2 Kc5 9.Kd3 Kb4
10.Kxd4 Kxb3 11.Kd5 Kxa4 12.c5 bxc5
13.Kxc5 Kb3 14.Kd5 (25.466.620) 943

9.02 3:47 -1.65 1.Re1 Qc3 2.Re4 Qd2 3.Rxf4+ Qxf4
4.Qxd3 Qc1+ 5.Qf1 Qe3+ 6.Kh1 Qxb3
7.Qc1 Ke8 8.Kg1 Qxa4 9.Qe3+ Kd7
10.Qd2+ Kc8 11.Qc1 (215.396.257) 948

10.01 5:31 -1.77 1.Re1 Qc3 2.Re4 Qd2 3.Rxf4+ Qxf4
4.Qxd3 Qc1+ 5.Qf1 Qe3+ 6.Kh1 Qxb3
7.Qc1 Ke8 8.Kg1 Qxa4 9.Kf1 Qb3
10.Ke1 a4 11.Kd2 Kd7 (316.728.877) 955

11.01 21:26 -1.93 1.Re1 Qc3 2.Re4 Qd2 3.Rxf4+ Qxf4
4.Qxd3 Qc1+ 5.Qf1 Qe3+ 6.Kh1 Qxb3
7.Qc1 Ke8 8.Kg1 Qxa4 9.Kf1 Qb3
10.Ke1 a4 11.Kd2 Qa2+ 12.Qc2 Qxc2+
13.Kxc2 (1.226.649.557) 953

best move: Re2-e1 time: 27:54.828 min n/s: 942.437 nodes: 1.578.420.164

But agreed Re1 seems to be losing, after the variation

[FEN "5k2/8/1p3q2/p1p5/P1P2p1p/1P1r1PpP/4R1P1/1Q4K1 w - -"]

1. Re1 Qc3 2. Re4 Qd2 3. Rxf4+ Qxf4 4. Qxd3 *

I took Shredder 11 with Shredderbases to check this endgame independantly:

[d]5k2/8/1p6/p1p5/P1P2q1p/1P1Q1PpP/6P1/6K1 b - -

Engine: Shredder 11 Default (128 MB)
by Stefan Meyer-Kahlen

22/58 6:01 +3.96 4...Qc1+ 5.Qf1 Qe3+ 6.Kh1 Qxb3 7.Qc1 Ke8
8.Qe1+ Kd8 9.f4 Qxc4 10.Qd1+ Ke7
11.f5 Qd4 12.Qe1+ Kf8 13.Qc1 Kf7
14.Qe1 (264.084.784) 730 SB:16.242

best move: Qf4-c1 time: 6:17.485 min n/s: 730.047 CPU 99.3% n/s(1CPU): 735.193 nodes: 275.468.065 SB: 16.366

But still the "Smooth Stockfish" was very quick to catch this and that Re1 is also losing!

I'm having not such good results with just more Null move pruning, getting a better branching factor certainly 8-) which is good but for difficult positions there is also sometimes too much selectivity and it finds the right move too late. It may be a matter of tuning it just right so you get just the right speed against Rybka for instance, which in my opinion gets a lot of its strength from just searching deeper, without too much horizon effects. This just a generalization of course but to show a lot depends on the tuning.

Regards, Eelco
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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jarkkop
Posts: 198
Joined: Thu Mar 09, 2006 2:44 am
Location: Helsinki, Finland

Re: interesting "avoid move" position

Post by jarkkop »

5k2/8/1p3q2/p1p5/P1P2p1p/1P1r1PpP/4R1P1/1Q4K1 w - - 0 1


1.Re1 Qd4+ 2.Kh1 Kg7 3.Re7+ Kf6 4.Re1 Kg5 5.Rf1 Qc3 6.Rd1 Rd2 7.Rxd2 Qxd2 8.Kg1 Kf6 9.Kh1 Qd4 10.Qf1 Qd2 11.Qa1+ Kg6 12.Qb1+ Kg5
³ (-0.54) Depth: 12/30 00:00:00 146kN
1.Re1 Qd4+ 2.Kh1 Kg7 3.Re7+ Kf6 4.Re1 Kg5 5.Rf1 Qc3 6.Rd1 Rd2 7.Rxd2 Qxd2 8.Kg1 Kf6 9.Kh1 Qc3 10.Kg1 Kg5 11.Kf1 Qd2 12.Kg1
³ (-0.54) Depth: 13/35 00:00:00 263kN
1.Re1 Qd4+ 2.Kh1 Kg7 3.Re7+ Kf6 4.Re1 Kg5 5.Rf1 Qc3 6.Rd1 Rd2 7.Rxd2 Qxd2 8.Kg1 Kf6 9.Kh1 Qc3 10.Kg1 Kg5 11.Kf1 Qd2 12.Kg1
³ (-0.54) Depth: 14/35 00:00:00 396kN
1.Re1 Qc3 2.Re4 Qd2 3.Re1 Kg7 4.Qa1+ Qc3 5.Qxc3+ Rxc3 6.Rb1 Kf6 7.Kf1 Rc2 8.Kg1 Kg5 9.Kh1 Rc3 10.Kg1 Re3 11.Kf1 Kf5 12.Rb2 Kf6 13.Rb1
µ (-0.75) Depth: 16/37 00:00:01 1631kN
1.Re1 Qc3 2.Re4 Qd2 3.Re1 Kg7 4.Qa1+ Qc3 5.Qxc3+ Rxc3 6.Rb1 Kg6 7.Kf1 Rc2 8.Kg1 Kf5 9.Kf1 Kf6 10.Kg1 Kg5 11.Kh1 Rc3 12.Kg1 Re3 13.Kf1 Kf5 14.Rb2 Kf6 15.Rb1
µ (-0.75) Depth: 16/37 00:00:01 1845kN
1.Re1 Qc3 2.Re4 Qd2 3.Re1 Kg7 4.Qa1+ Qc3 5.Qxc3+ Rxc3 6.Rb1 Kf6 7.Kf1 Rc2 8.Kg1 Kg5 9.Kh1 Rc3 10.Kg1 Re3 11.Kf1 Kf5 12.Rb2 Kf6 13.Rb1
µ (-0.75) Depth: 17/37 00:00:01 2435kN
1.Re1 Qc3 2.Re4 Qd2 3.Re1 Kg7 4.Qa1+ Qc3 5.Qxc3+ Rxc3 6.Rb1 Kf6 7.Kf1 Rc2 8.Kg1 Kf5 9.Kf1 Rd2 10.Kg1 Rd3 11.Kf1 Re3 12.Rb2 Kf6 13.Rb1
µ (-0.82) Depth: 18/51 00:00:04 7136kN
1.Re1 Qc3 2.Re4 Qd2 3.Re1 Kg7 4.Qa1+ Qc3 5.Qxc3+ Rxc3 6.Rb1 Kf6 7.Kf1 Rc2 8.Kg1 Kf5 9.Kf1 Rd2 10.Kg1 Kg6 11.Kf1 Kf6 12.Rc1
µ (-0.84) Depth: 19/51 00:00:05 8843kN
1.Re1 Qc3 2.Re4 Qd2 3.Re1 Kg7 4.Kh1 Rxb3 5.Qe4 Qd6 6.Qc2 Re3 7.Rd1 Qe6 8.Qb1 Re2 9.Qa1+ Kh6 10.Qh8+ Kg6 11.Qa1 Kh6
µ (-1.18) Depth: 20/51 00:00:26 40264kN
1.Re1 Qc3 2.Re4 Qd2 3.Re1 Kg7 4.Kh1 Rxb3 5.Qe4 Qd6 6.Qf5 Re3 7.Rb1 Re2 8.Qg4+ Qg6 9.Qd7+ Kh6 10.Rc1 Qe6
µ (-1.29) Depth: 21/51 00:01:01 93222kN
1.Re4 Rxb3 2.Qc1 Re3 3.Rxe3 fxe3 4.Kf1 Qd4 5.Ke2 Kf7 6.Qc2 Kg7 7.Qd3 Kf6 8.f4 Qxf4 9.Qd8+ Kf5 10.Qd5+ Qe5 11.Qf3+ Kg6 12.Qg4+ Kf7 13.Qf3+ Ke6 14.Qc6+ Kf5 15.Qxb6
µ (-1.10) Depth: 21/51 00:01:07 102mN
1.Re4 Rxb3 2.Qc1 Re3 3.Rxe3 fxe3 4.Kf1 Qd4 5.Ke2 Kf7 6.Qc2 Kg7 7.Qd3 Kf6 8.f4 Kg7 9.Qxe3 Qxc4+ 10.Kf3 Kf7 11.Kg4 Qxa4 12.Qf3 Qd4 13.Qb7+ Kf8 14.Qxb6 a4 15.Qb8+ Kf7 16.Qc7+ Ke8
µ (-1.18) Depth: 21/51 00:01:07 103mN
1.Re4 Rxb3 2.Qc1 Re3 3.Rxe3 fxe3 4.Kf1 Qd4 5.Ke2 Kf7 6.Qc2 Kg7 7.Qd3 Kf6 8.f4 Qxf4 9.Qd8+ Kg7 10.Qe7+ Kg8 11.Qd8+ Kh7 12.Qe7+ Kg6 13.Qe6+ Qf6 14.Qe4+ Qf5 15.Kxe3 Qxe4+ 16.Kxe4 Kf6
µ (-1.23) Depth: 22/51 00:01:13 113mN
1.Re4 Rxb3 2.Qc1 Re3 3.Rxe3 fxe3 4.Kf1 Kf7 5.Ke2 Qd4 6.Qc2 Kg7 7.Qd3 Kf6 8.f4 Qxf4 9.Qd8+ Kg7 10.Qe7+ Kg6 11.Qe6+ Kh7 12.Qe7+ Kh6 13.Qe6+ Kh5 14.Qe8+ Kg5 15.Qe7+ Qf6 16.Qxe3+ Kg6
µ (-1.15) Depth: 23/51 00:01:39 151mN
1.Re4 Rxb3 2.Qc1 Kg8 3.Kf1 Qd6 4.Qc2 Ra3 5.Re1 Kg7 6.Rd1 Qe5 7.Qd2 Ra1 8.Qd7+ Kh6 9.Qd8 Rxd1+ 10.Qxd1 Qe6 11.Qd3 Kg7 12.Qc3+ Qf6 13.Qe1 Kg6 14.Qe4+ Kg7 15.Qb1 Qd4 16.Qc2 Qa1+
µ (-1.28) Depth: 23/57 00:02:32 232mN
1.Kf1
µ (-1.07) Depth: 23/60 00:03:10 290mN
1.Kf1
µ (-0.95) Depth: 23/60 00:03:20 305mN
1.Kf1 Qc3 2.Qe1 Qxe1+ 3.Kxe1 Rxb3 4.Re4 Rb1+ 5.Kd2 Rg1 6.Rxf4+ Ke7 7.Re4+ Kf7 8.Rf4+ Ke6 9.Rxh4 Rxg2+ 10.Ke3 Rc2 11.Re4+ Kf6 12.Rf4+ Ke5 13.Re4+ Kd6 14.Rg4 g2 15.h4 Ke5 16.h5 Kf5
µ (-0.82) Depth: 23/60 00:04:10 380mN
1.Kf1 Qc3 2.Qe1 Qxe1+ 3.Kxe1 Rxb3 4.Re4 Rb1+ 5.Kd2 Rg1 6.Rxf4+ Ke7 7.Re4+ Kf7 8.Rf4+ Ke6 9.Ke3 Rxg2 10.Re4+ Kf5 11.Rxh4 Rc2 12.Rf4+ Ke5 13.Re4+ Kd6 14.Rg4 g2 15.h4 Rxc4 16.Rxg2 Rxh4
µ (-0.83) Depth: 24/60 00:04:34 418mN
1.Kf1 Qc3 2.Qe1 Qxe1+ 3.Kxe1 Rxb3 4.Re4 Rb1+ 5.Kd2 Rb2+ 6.Kd3 Rxg2 7.Rxf4+ Ke7 8.Rxh4 Rf2 9.Ke3 Ra2 10.Rg4 Rxa4 11.h4 g2 12.Rxg2 Rxc4 13.h5 b5 14.h6 Rh4 15.Rg7+ Kf6 16.Ra7 a4
µ (-0.85) Depth: 25/62 00:05:54 541mN
1.Kf1 Qc3 2.Qe1 Qxe1+ 3.Kxe1 Rxb3 4.Re4 Ra3 5.Rxf4+ Ke7 6.Rxh4 Rxa4 7.Rh7+ Kd6 8.Rh6+ Ke5 9.Rxb6 Ra2 10.Ra6 Kd4 11.h4 Rxg2 12.Kf1 Rf2+ 13.Kg1 Ra2 14.Rg6 a4 15.Rg4+ Ke5 16.h5 a3
µ (-1.29) Depth: 26/76 00:21:42 1969mN
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Howard E
Posts: 261
Joined: Wed Mar 08, 2006 8:49 pm

Re: interesting "avoid move" position

Post by Howard E »

Somehow suits prodeo1.6. Never considers Re8.

ProDeo1.6:
9 00:00 212.376 212.376 0.00 Re8+ Kxe8 Qxd3 Qa1+ Qf1 Qb2 Qd1 Ke7 Kh1 Qf2 Qb1 Ke8 Qg6+ Kd7 Qg7+ Ke8 Qg6+ Kd7 Qg7+ Ke8
10 00:00 405.925 405.925 -0.02 Re8+ Kxe8 Qxd3 Qa1+ Qf1 Qb2 Qd1 Ke7 Kh1 Qf2 Qa1 Ke6 Qd1 Ke7 Qa1 Ke6 Qd1
10 00:00 490.528 490.528 0.00 Re1 Qd4+ Kh1 Qc3 Re4 Qd2 Re1 Qc3 Re4 Qd2 Re1
11 00:00 870.061 870.061 0.00 Re1 Qd4+ Kh1 Qc3 Rd1 Rxd1+ Qxd1 Ke7 Qb1 Kf6 Qd1 Ke7 Qb1 Kf6 Qd1
12 00:00 1.863.135 1.863.135 -0.01 Re1 Qd4+ Kh1 Qc3 Rd1 Rxd1+ Qxd1 Ke7 Qb1 Kd8 Kg1 Qe3+ Kh1 Kc8
13 00:04 11.014.248 2.189.711 -0.07 Re1 Qd4+ Kh1 Qc3 Rd1 Rxd1+ Qxd1 Qd4 Qb1 Kg7 Qg1 Qxg1+ Kxg1 Kg6 Kh1 Kf5 Kg1 Ke5 Kf1 b5 axb5
14 00:12 28.119.913 2.343.326 -0.16 Re1 Qd4+ Kh1 Qc3 Rd1 Rxf3 Rd8+ Kg7 Rd7+ Kf6 Rb7 Rd3 Rxb6+ Kg7 Qg1 Qc2 Rb7+ Kf6 Ra7 Qxb3
15 00:29 69.261.740 2.308.724 -0.38 Re1 Qc3 Re4 Qd2 Rxf4+ Qxf4 Qxd3 Kg8 Qd8+ Kg7 Qd7+ Kf6 Qd8+ Kg6 Qxb6+ Kg7 Kf1 Qc1+ Ke2 Qh1 Qxc5 Qxg2+ Ke1 Qxh3
16 00:59 142.261.207 2.411.206 -0.35 Re1 Qc3 Re4 Qxb3 Rxf4+ Kg7 Qxb3 Rxb3 Kf1 Rb1+ Ke2 Rb2+ Kd3 Rxg2 Rxh4 Ra2 Rg4+ Kh6 Rxg3 Ra3+ Kc2 Rxa4 Kc3 Ra3+
17 02:48 411.614.381 2.450.085 -0.42 Re1 Qc3 Re4 Qf6 Qxd3 Qb2 Rxf4+ Kg7 Qd7+ Kg6 Qe8+ Kg5 Rg4+ Kf5 Rxg3 Qc1+ Kh2
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