Test Position: Can Black draw?

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

Test Position: Can Black draw?

Post by zullil »

[d]4Q3/5K2/p7/p7/P7/3R1n2/7p/6qk w - - 0 8

Can Black draw? Read more here.
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Eelco de Groot
Posts: 4697
Joined: Sun Mar 12, 2006 2:40 am
Full name:   Eelco de Groot

Re: Test Position: Can Black draw?

Post by Eelco de Groot »

zullil wrote:[d]4Q3/5K2/p7/p7/P7/3R1n2/7p/6qk w - - 0 8

Can Black draw? Read more here.
Rainbow Serpent thinks it is good for White, the leaf position looks winning to me.

4Q3/5K2/p7/p7/P7/3R1n2/7p/6qk w - -

Engine: Rainbow Serpent 1.7.1s(dc) Build 047 (256 MB)
by Tord Romstad, Marco Costalba, Joona Kiiski

1.00 0:00 +2.66 1.Rxf3 (2.575) 11

2.00 0:00 +2.54 1.Rxf3 Qd1 (2.667) 11

3.00 0:00 +2.46 1.Rxf3 Qd1 2.Rf5 (16.155) 60

3.00 0:00 +2.66 1.Qa8 Qg2 2.Rxf3 Kg1 3.Qa7+ Kh1
4.Rf6 (24.331) 86

4.00 0:00 +2.66 1.Qa8 Qg2 2.Rxf3 Kg1 3.Qa7+ Kh1
4.Rf6 (58.828) 171

4.00 0:00 +2.98 1.Rxf3 Qg4 2.Qe1+ Qg1 3.Qe7 (82.257) 210

4.00 0:00 +3.51 1.Qe4 Qa7+ 2.Ke6 Qb6+ 3.Kf5 Qb1
4.Qxf3+ Kg1 5.Qe3+ Kf1 6.Qf4+ Kg1
7.Qd4+ Kf1 (91.645) 225

5.00 0:00 +3.51 1.Qe4 Qa7+ 2.Ke6 Qb6+ 3.Kf5 Qb1
4.Qxf3+ Kg1 5.Qe3+ Kf1 6.Qf4+ Kg1
7.Qd4+ Kf1 (94.478) 232

5.00 0:00 +3.83 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qd1
4.Kg4 (120.392) 265

6.00 0:00 +3.95 1.Rxf3 Qa7+ 2.Kf6 Qd4+ 3.Kf5 Qc5+
4.Kg4 Qg1+ 5.Rg3 Qd4+ 6.Kh3 Qg4+
7.Rxg4 (131.840) 281

7.00 0:00 +4.52++ 1.Rxf3 Qa7+ 2.Kf6 Qd4+ 3.Kf5 Qc5+
4.Kg4 Qg1+ 5.Kh4 Qd1 6.Qe4 (197.458) 332

7.00 0:00 +4.19 1.Rxf3 Qa7+ 2.Kf6 Qd4+ 3.Kf5 Qd5+
4.Kg4 Qd1 5.Qe5 Qxa4+ 6.Kh3 Qd7+
7.Kg3 Qd1 8.Qxa5 Qd6+ 9.Kf2 (261.797) 381

8.00 0:00 +4.36 1.Rxf3 Qa7+ 2.Kf6 Qd4+ 3.Kf5 Qd5+
4.Kg4 Qd1 5.Qf7 Kg1 6.Qa7+ Kg2
7.Qf2+ Kh1 8.Kg3 Qg1+ 9.Kh3 Qxf2
10.Rxf2 (336.530) 406

9.00 0:01 +3.91 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qd1
4.Qe4 Kg1 5.Qg4+ Kh1 6.Kh4 Qe2 7.Kh3 (502.711) 446

10.01 0:01 +4.36 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qd1
4.Qe4 Kg1 5.Qg4+ Kh1 6.Kh4 Qe1+
7.Kh3 Qg1 8.Rg3 (830.035) 492

11.01 0:02 +4.16 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kf6 Qd4+
4.Kf5 Qd5+ 5.Kg4 Qd1 6.Qf7 Kg1
7.Qa7+ Kg2 8.Qf2+ Kh1 9.Kh3 Qd7+
10.Rf5 Qh7+ 11.Kg3 Qg7+ 12.Kf3 Qg3+
13.Qxg3 (1.276.623) 517

12.01 0:03 +4.48 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kf6 Qd4+
4.Kf5 Qd5+ 5.Kg4 Qd1 6.Kg3 Qc1 7.Qe5 Kg1
8.Qg7 Kh1 9.Qf6 Qg1+ 10.Kh4 Qe1+
11.Kh3 (2.032.721) 537

13.01 0:04 +5.33++ 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kf5 Qb1+
4.Kg4 Qd1 5.Kg3 Qc1 6.Qe5 Kg1 7.Qd4+ Kh1
8.Qd2 Qc7+ 9.Rf4 (2.765.285) 558

13.01 0:06 +4.48 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kf5 Qb1+
4.Kg4 Qd1 5.Kg3 Qc1 6.Qe5 Kg1 7.Qd4+ Kh1
8.Qd2 Qc7+ 9.Rf4 Qg7+ 10.Kh3 Qh6+
11.Kg4 Qg7+ 12.Kf3 Qb7+ 13.Re4 Qf7+
14.Kg3 (3.473.821) 565

14.01 0:07 +4.55 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kf5 Qb1+
4.Kg4 Qd1 5.Kg3 Qc1 6.Qe5 Kg1 7.Qd4+ Kh1
8.Qd2 Qc7+ 9.Rf4 Qg7+ 10.Kh3 Qh6+
11.Kg4 Qg7+ 12.Kf3 Qb7+ 13.Re4 Qb3+
14.Qe3 (4.544.074) 581

15.01 0:11 +4.71++ 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kf5 Qb1+
4.Kg4 Qd1 5.Kg3 Qc1 6.Qe5 Kg1 7.Rf4 Qa3+
8.Kg4 h1Q 9.Qe1+ Kh2 10.Qh4+ Kg2
11.Qf2+ (6.820.089) 597

15.01 0:12 +4.87++ 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kf5 Qb1+
4.Kg4 Qd1 5.Kg3 Qc1 6.Qe5 Kg1 7.Rf4 Qa3+
8.Kg4 h1Q 9.Qe1+ Kh2 10.Qh4+ Kg2
11.Qf2+ (7.213.746) 598

15.01 0:12 +5.20++ 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kf5 Qb1+
4.Kg4 Qd1 5.Kg3 Qc1 6.Qe5 Kg1 7.Rf4 Qa3+
8.Kg4 h1Q 9.Qe1+ Kh2 10.Qh4+ Kg2
11.Qf2+ (7.504.735) 601

15.01 0:14 +5.84++ 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kf5 Qb1+
4.Kg4 Qd1 5.Kg3 Qc1 6.Qe5 Kg1 7.Rf4 Qa3+
8.Kg4 h1Q 9.Qe1+ Kh2 10.Qh4+ Kg2
11.Qf2+ (8.830.224) 603

15.01 0:18 +5.52-- 1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kf5 Qb1+
4.Kg4 Qd1 5.Kg3 Qc1 6.Qe5 Kg1 7.Rf4 h1N+
8.Kh4 Qc2 9.Qe1+ Kh2 10.Kg5 Qg2+
11.Rg4 Qd5+ 12.Kh6 Qc6+ 13.Kh7 Qd7+
14.Rg7 (10.943.054) 601

15.02 0:30 +6.82 1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1
4.Qg3+ Kh1 5.Qe1+ Kg2 6.Qd2+ Kg1
7.Qd1+ Kg2 8.Qd5+ Kg1 9.Qc5+ Kg2
10.Qg5+ Kf2 11.Qh4+ Kg2 12.Qe4+ Kg1
13.Qe3+ Kg2 14.Qe2+ (18.193.557) 601

16.01 0:33 +6.70 1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1
4.Qg3+ Kh1 5.Qe1+ Kg2 6.Qd2+ Kg1
7.Qd1+ Kg2 8.Qd5+ Kg1 9.Qc5+ Kg2
10.Qg5+ Kf2 11.Qh4+ Kg2 12.Qe4+ Kg1
13.Qe3+ Kg2 14.Qe2+ (20.327.164) 613

17.01 0:44 +6.82 1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1
4.Qg3+ Kh1 5.Qe1+ Kg2 6.Qd2+ Kg1
7.Qd1+ Kg2 8.Qd5+ Kg1 9.Qc5+ Kg2
10.Qg5+ Kf2 11.Qh4+ Kg2 12.Qe4+ Kg1
13.Qe3+ Kg2 14.Qe2+ (27.880.188) 626

18.01 1:05 +6.46-- 1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1
4.Qg3+ Kh1 5.Qe1+ Kg2 6.Qd2+ Kg1
7.Qd1+ Kg2 8.Qd5+ Kg1 9.Qc5+ Kg2
10.Qg5+ Kf2 11.Qh4+ Kg2 12.Qe4+ Kg1
13.Qe3+ Kg2 14.Qe2+ (42.058.075) 638

18.01 2:13 +6.82 1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1
4.Qg3+ Kh1 5.Qe1+ Kg2 6.Qd2+ Kg1
7.Qd1+ Kg2 8.Qg4+ Kf2 9.Qh4+ Kg2
10.Qe4+ Kg1 11.Qe3+ Kg2 12.Qg5+ Kf2
13.Qc1 Kg2 14.Qc6+ (81.278.672) 609

19.01 2:17 +6.70-- 1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1
4.Qg3+ Kh1 5.Qe1+ Kg2 6.Qd2+ Kg1
7.Qd1+ Kg2 8.Qd5+ Kg1 9.Qd1+ (85.070.811) 618

19.04 3:38 +6.94++ 1.Qe4 Qa7+ 2.Ke6 Qb6+ 3.Kf5 Qc5+
4.Kg4 Qg1+ 5.Kxf3 Qg2+ 6.Ke3 Qxe4+
7.Kxe4 Kg2 8.Rd2+ Kg3 9.Rd1 Kh3
10.Kd5 Kg3 11.Re1 Kg4 12.Rh1 Kf5
13.Rxh2 Kg6 14.Rb2 (134.123.903) 614

20.01 4:01 +6.64-- 1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1
4.Qg3+ Kh1 5.Qf3+ (150.630.528) 624

20.01 17:09 +6.52-- 1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1
4.Qg3+ Kh1 5.Qh3 Kg1 6.Qg4+ Kf2
7.Qh4+ Kg2 8.Qg5+ Kf2 9.Qd5 Kg1
10.Qd4+ Kg2 11.Qd5+ Kg1 (653.488.422) 634

20.01 51:46 +6.30 1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1
4.Qg3+ Kh1 5.Qe1+ Kg2 6.Qe4+ Kg1
7.Qg6+ Kf2 8.Qh5 Kg2 9.Qe2+ Kg1
10.Qg4+ Kf2 11.Qd4+ Kg2 12.Qd2+ Kg1
13.Qe3+ Kg2 14.Qg5+ (1.998.207.456) 643

20.02 52:08 +6.66 1.Qe4 Qg2 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1
4.Qg3+ Kh1 5.Qe1+ Kg2 6.Qe4+ Kg1
7.Qg4+ Kf2 8.Qh5 Kg2 9.Qd5+ Kg1
10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qc1+ Kg2
13.Qd2+ Kg1 14.Qd1+ (2.012.588.361) 643

21.01 53:53 +6.38-- 1.Qe4 Qg2 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1
4.Qg3+ Kh1 5.Qe1+ Kg2 6.Qe4+ Kg1
7.Qg4+ Kf2 8.Qh5 Kg2 9.Qd5+ Kg1
10.Qc5+ Kg2 11.Qxa5 h1Q 12.Qxa6 Qh7+
13.Kf8 Kg3 14.a5 (2.078.390.707) 642

21.01 78:32 +6.10-- 1.Qe4 Qg2 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1
4.Qg3+ Kh1 5.Qe1+ Kg2 6.Qe2+ Kg1
7.Qe3+ Kg2 8.Qd2+ Kg1 9.Qc1+ Kg2
10.Qc6+ Kg1 11.Qg6+ Kf2 12.Qf5+ Kg2
13.Qd5+ Kg1 14.Qd1+ (3.120.826.092) 662

21.02 79:46 +6.94++ 1.Qc6 Qg4 2.Rxf3 Qh5+ 3.Ke7 Qg5+
4.Kf8 Kg1 5.Qb6+ Kh1 6.Rf7 Qc1
7.Qb7+ Kg1 8.Rg7+ Kf2 9.Rg2+ Ke1
10.Qe4+
{[d]5K2/8/p7/p7/P3Q3/8/6Rp/2q1k3 b - - 0 1}
(3.156.844.292) 659

best move: Qe8-c6 time: 93:27.546 min n/s: 634.564 nodes: 3.558.330.288
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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kingliveson

Re: Test Position: Can Black draw?

Post by kingliveson »

zullil wrote:[d]4Q3/5K2/p7/p7/P7/3R1n2/7p/6qk w - - 0 8

Can Black draw? Read more here.
No, this position is lost. One of the best features when analyzing a game with engines like IvanHoe and Fire (formerly FireBird), is RobboTripleBases incorporated search. These TableBases are loaded at start up into RAM and accessed directly from RAM not Disk so speed is not an issue. They provide the engine tremendous endgame play to determine which positions lead to draw, loss or, win. According to the analysis below, white has 100% guaranteed win:

Code: Select all

IvanHoe 9.63b x64:

1.Rxf3 Qb1 2.Qc6 Qa2+ 3.Kg6 Qg2+ 4.Kf5 
  +-  (1.41)   Depth: 6   00:00:00  16kN, tb=350

1.Rxf3 Qb1 2.Qc6 Qa2+ 3.Kg6 Qg2+ 4.Kf5 
  +-  (1.41)   Depth: 6   00:00:00  16kN, tb=350

1.Rxf3 Qb1 2.Qc6 Qa2+ 3.Kg6 Qg2+ 4.Kf5 
  +-  (1.49 !)   Depth: 7   00:00:00  18kN, tb=358

1.Rxf3 Qb1 2.Qc6 Qa2+ 3.Kg6 Qg2+ 4.Kf5 
  +-  (1.57 !)   Depth: 7   00:00:00  19kN, tb=360

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qc5+ 4.Kh4 Qd4+ 5.Kh3 
  +-  (1.64)   Depth: 7   00:00:00  20kN, tb=361

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qc5+ 4.Kh4 Qd4+ 5.Kh3 
  +-  (1.64)   Depth: 7   00:00:00  20kN, tb=361

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qc5+ 4.Kh4 Qd4+ 5.Kh3 
  +-  (1.72 !)   Depth: 8   00:00:00  22kN, tb=362

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qd1 4.Qe4 Kg2 5.Qg4+ Kh1 6.Kh4 
  +-  (1.78)   Depth: 8   00:00:00  24kN, tb=378

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qd1 4.Qe4 Kg2 5.Qg4+ Kh1 6.Kh4 
  +-  (1.78)   Depth: 8   00:00:00  24kN, tb=378

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qd1 4.Qe4 Kg2 5.Qg4+ Kh1 6.Kh4 Qg1 7.Qe4 
  +-  (1.73)   Depth: 9   00:00:00  32kN, tb=424

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qd1 4.Qe4 Kg2 5.Qg4+ Kh1 6.Kh4 Qg1 7.Qe4 
  +-  (1.73)   Depth: 9   00:00:00  34kN, tb=430

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qd1 4.Qe4 Kg2 5.Qg4+ Kh1 6.Kh4 Qg1 7.Qe4 
  +-  (1.65 --)   Depth: 10   00:00:00  56kN, tb=604

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Kh5 Qd5+ 4.Kg4 Qd1 5.Qf7 Qg1+ 6.Kh4 Qd4+ 7.Kh3 
  +-  (1.67)   Depth: 10   00:00:00  67kN, tb=939

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Kh5 Qd5+ 4.Kg4 Qd1 5.Qf7 Qg1+ 6.Kh4 Qd4+ 7.Kh3 
  +-  (1.67)   Depth: 10   00:00:00  68kN, tb=939

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Kh5 Qd1 4.Qe4 Kg2 5.Qg4+ Kh1 6.Kh4 Qg1 7.Qe4 
  +-  (1.75 !)   Depth: 11   00:00:00  100kN, tb=1489

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Kh5 Qd5+ 4.Kg4 Qd1 5.Qf7 Qg1+ 6.Kh4 Qd4+ 7.Rf4 Qh8+ 8.Kg4 Qc8+ 9.Rf5 Kg1 10.Qa7+ Kh1 
  +-  (1.81)   Depth: 11   00:00:00  122kN, tb=1587

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Kh5 Qd5+ 4.Kg4 Qd1 5.Qf7 Qg1+ 6.Kh4 Qd4+ 7.Rf4 Qh8+ 8.Kg4 Qc8+ 9.Rf5 Kg1 10.Qa7+ Kh1 
  +-  (1.81)   Depth: 11   00:00:00  130kN, tb=1692

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qb1 4.Qc6 Qh7+ 5.Kg4 Qg8+ 6.Kf4 Qb8+ 7.Ke3 Qe5+ 8.Kf2 
  +-  (1.81)   Depth: 12   00:00:00  191kN, tb=2657

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qb1 4.Qc6 Qh7+ 5.Kg4 Qg8+ 6.Kf4 Qb8+ 7.Ke3 Qe5+ 8.Kf2 
  +-  (1.81)   Depth: 12   00:00:00  215kN, tb=3112

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qb1 4.Kg4 Qd1 5.Qf7 Qg1+ 6.Kh4 Qd4+ 7.Rf4 Qh8+ 8.Kg4 Qc8+ 9.Rf5 Kg1 10.Qa7+ Kh1 
  +-  (1.81)   Depth: 13   00:00:00  277kN, tb=4250

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qb1 4.Kg4 Qd1 5.Qf7 Qg1+ 6.Kh4 Qd4+ 7.Rf4 Qh8+ 8.Kg4 Qc8+ 9.Rf5 Kg1 10.Qa7+ Kh1 
  +-  (1.81)   Depth: 13   00:00:00  322kN, tb=4956

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qb1 4.Kg4 Qd1 5.Qf7 Qg1+ 6.Kh4 Qd4+ 7.Rf4 Qh8+ 8.Kg4 Qc8+ 9.Rf5 Kg1 10.Qa7+ Kh1 
  +-  (1.81)   Depth: 14   00:00:00  401kN, tb=6421

1.Qc6 
  +-  (1.89 !)   Depth: 14   00:00:00  586kN, tb=12561

1.Qc6 
  +-  (1.97 !)   Depth: 14   00:00:00  609kN, tb=13179

1.Qc6 
  +-  (2.09 !)   Depth: 14   00:00:00  629kN, tb=13859

1.Qc6 
  +-  (2.27 !)   Depth: 14   00:00:00  641kN, tb=14144

1.Qc6 
  +-  (2.54 !)   Depth: 14   00:00:00  662kN, tb=14683

1.Qc6 
  +-  (2.94 !)   Depth: 14   00:00:00  685kN, tb=15401

1.Qc6 
  +-  (3.54 !)   Depth: 14   00:00:00  721kN, tb=16527

1.Qc6 
  +-  (4.44 !)   Depth: 14   00:00:00  880kN, tb=27384

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qb1+ Kg2 11.Qe4+ Kg1 12.Qg6+ Kf2 13.Qf6+ Kg1 14.Qa1+ Kg2 15.Qg7+ Kh3 
  +-  (4.91)   Depth: 14   00:00:00  1112kN, tb=42842

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qb1+ Kg2 11.Qe4+ Kg1 12.Qg6+ Kf2 13.Qf6+ Kg1 14.Qa1+ Kg2 15.Qg7+ Kh3 
  +-  (4.91)   Depth: 14   00:00:00  1120kN, tb=42925

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg1 6.Qe3+ Kg2 7.Qg5+ Kf1 8.Qf5+ Kg1 9.Qb1+ Kg2 10.Qe4+ Kg1 11.Qe1+ Kg2 12.Qd2+ Kg1 13.Qc1+ Kg2 14.Qc2+ Kg1 15.Qb1+ 
  +-  (4.91)   Depth: 15   00:00:01  1316kN, tb=62842

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg1 6.Qe3+ Kg2 7.Qg5+ Kf1 8.Qf5+ Kg1 9.Qb1+ Kg2 10.Qe4+ Kg1 11.Qe1+ Kg2 12.Qd2+ Kg1 13.Qc1+ Kg2 14.Qc2+ Kg1 15.Qb1+ 
  +-  (4.91)   Depth: 15   00:00:01  1336kN, tb=63090

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg1 6.Qe3+ Kg2 7.Qg5+ Kf1 8.Qf5+ Kg1 9.Qb1+ Kg2 10.Qe4+ Kg1 11.Qe1+ Kg2 12.Qd2+ Kg1 13.Qg5+ Kf2 14.Qc1 Kg2 15.Qc2+ Kg1 16.Qb1+ 
  +-  (4.99 !)   Depth: 16   00:00:01  1598kN, tb=87907

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg1 6.Qe3+ Kg2 7.Qg5+ Kf1 8.Qf5+ Kg1 9.Qb1+ Kg2 10.Qe4+ Kg1 11.Qe1+ Kg2 12.Qd2+ Kg1 13.Qg5+ Kf2 14.Qc1 Kg2 15.Qc2+ Kg1 16.Qb1+ 
  +-  (5.07 !)   Depth: 16   00:00:01  1724kN, tb=98661

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kf1 11.Qc6 Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qb2+ Kg1 21.Qc1+ Kg2 
  +-  (4.91)   Depth: 16   00:00:01  1783kN, tb=102183

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kf1 11.Qc6 Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qb2+ Kg1 21.Qc1+ Kg2 
  +-  (4.91)   Depth: 16   00:00:01  1825kN, tb=103151

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qb2+ Kg1 21.Qc1+ Kg2 
  +-  (4.91)   Depth: 17   00:00:01  2169kN, tb=138014

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qb2+ Kg1 21.Qc1+ Kg2 
  +-  (4.91)   Depth: 17   00:00:01  2245kN, tb=140054

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf1 8.Qf5+ Kg1 9.Qb1+ Kg2 10.Qe4+ Kg1 11.Qe1+ Kg2 12.Qe2+ Kg1 13.Qd1+ Kg2 14.Qd5+ Kg1 15.Qc5+ Kf1 16.Qc6 Kg1 17.Qb6+ Kg2 18.Qg6+ Kf2 19.Qe4 Kg1 
  +-  (4.91)   Depth: 18   00:00:01  2845kN, tb=200147

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf1 8.Qf5+ Kg1 9.Qb1+ Kg2 10.Qe4+ Kg1 11.Qe1+ Kg2 12.Qe2+ Kg1 13.Qd1+ Kg2 14.Qd5+ Kg1 15.Qc5+ Kf1 16.Qc6 Kg1 17.Qb6+ Kg2 18.Qg6+ Kf2 19.Qe4 Kg1 
  +-  (4.91)   Depth: 18   00:00:01  2983kN, tb=203680

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qc5+ 
  +-  (4.91)   Depth: 19   00:00:01  3922kN, tb=291910

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qc5+ 
  +-  (4.91)   Depth: 19   00:00:01  4967kN, tb=337126

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qg4+ Kf2 21.Qh3 Kg1 22.Qe3+ Kg2 23.Qg5+ Kf1 24.Qf5+ Kg1 25.Qb1+ Kg2 26.Qe4+ Kg1 
  +-  (4.91)   Depth: 20   00:00:02  6626kN, tb=508727

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qg4+ Kf2 21.Qh3 Kg1 22.Qe3+ Kg2 23.Qg5+ Kf1 24.Qf5+ Kg1 25.Qb1+ Kg2 26.Qe4+ Kg1 
  +-  (4.91)   Depth: 20   00:00:02  7464kN, tb=536130

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qg7+ Kf1 21.Qf6+ Kg2 22.Qb2+ Kg1 23.Qa1+ Kg2 24.Qa2+ Kg1 25.Qb1+ Kg2 26.Qe4+ Kg1 
  +-  (4.91)   Depth: 21   00:00:02  10774kN, tb=836245

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qg7+ Kf1 21.Qf6+ Kg2 22.Qb2+ Kg1 23.Qa1+ Kg2 24.Qa2+ Kg1 25.Qb1+ Kg2 26.Qe4+ Kg1 
  +-  (4.91)   Depth: 21   00:00:03  12355kN, tb=894221

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qg7+ Kf1 21.Qf6+ Kg2 22.Qb2+ Kg1 23.Qa1+ Kg2 24.Qa2+ Kg1 25.Qb1+ Kg2 26.Qe4+ Kg1 
  +-  (4.91)   Depth: 22   00:00:04  18458kN, tb=1358021

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qg7+ Kf1 21.Qf6+ Kg2 22.Qb2+ Kg1 23.Qa1+ Kg2 24.Qa2+ Kg1 25.Qb1+ Kg2 26.Qe4+ Kg1 
  +-  (4.91)   Depth: 22   00:00:04  21085kN, tb=1478340

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qg4+ Kf2 21.Qf5+ Kg1 22.Qb1+ Kg2 23.Qb2+ Kg1 24.Qa1+ Kg2 25.Qg7+ Kf1 26.Qf6+ Kg2 27.Qb2+ 
  +-  (4.91)   Depth: 23   00:00:05  26518kN, tb=1790529

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qg4+ Kf2 21.Qf5+ Kg1 22.Qb1+ Kg2 23.Qb2+ Kg1 24.Qa1+ Kg2 25.Qg7+ Kf1 26.Qf6+ Kg2 27.Qb2+ 
  +-  (4.91)   Depth: 23   00:00:06  31993kN, tb=2032221

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qg4+ Kf2 21.Qf5+ Kg1 22.Qb1+ Kg2 23.Qb7+ Kg1 24.Qa7+ Kg2 25.Qa8+ Kg1 26.Qg8+ Kf2 27.Qh8 Kg2 28.Qa8+ 
  +-  (4.91)   Depth: 24   00:00:08  44272kN, tb=2881295

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qd1+ Kg2 18.Qd5+ Kg1 19.Qd4+ Kg2 20.Qg4+ Kf2 21.Qf5+ Kg1 22.Qb1+ Kg2 23.Qb7+ Kg1 24.Qa7+ Kg2 25.Qa8+ Kg1 26.Qg8+ Kf2 27.Qh8 Kg2 28.Qa8+ 
  +-  (4.91)   Depth: 24   00:00:12  70876kN, tb=4128214

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qg4+ Kf2 18.Qh5 Kg1 19.Qd1+ Kg2 20.Qd5+ Kg1 21.Qd4+ Kg2 22.Qg4+ Kf2 
  +-  (4.91)   Depth: 25   00:00:17  96899kN, tb=5919017

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qe1+ Kg2 16.Qe2+ Kg1 17.Qg4+ Kf2 18.Qh5 Kg1 19.Qd1+ Kg2 20.Qd5+ Kg1 21.Qd4+ Kg2 22.Qg4+ Kf2 
  +-  (4.91)   Depth: 25   00:00:21  124mN, tb=7168070

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qg4+ Kf2 16.Qh5 Kg1 17.Qd1+ Kg2 18.Qe2+ Kg1 19.Qg4+ 
  +-  (4.91)   Depth: 26   00:00:27  162mN, tb=9337508

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg2 6.Qd2+ Kg1 7.Qg5+ Kf2 8.Qc1 Kg2 9.Qc2+ Kg1 10.Qc5+ Kg2 11.Qc6+ Kg1 12.Qb6+ Kg2 13.Qg6+ Kf2 14.Qe4 Kg1 15.Qg4+ Kf2 16.Qh5 Kg1 17.Qd1+ Kg2 18.Qe2+ Kg1 19.Qg4+ 
  +-  (4.91)   Depth: 26   00:00:33  201mN, tb=11375303

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg1 6.Qe3+ Kg2 7.Qg5+ Kf1 8.Qd5 Kg1 9.Qd4+ Kg2 10.Qe4+ Kg1 11.Qe1+ Kg2 12.Qe2+ Kg1 13.Qg4+ Kf2 14.Qf5+ Kg1 15.Qc5+ Kg2 16.Qc6+ Kg1 17.Qb6+ Kg2 18.Qg6+ Kf2 19.Qh6 Kg1 20.Qg7+ Kf2 21.Qa1 Kg2 22.Qb2+ Kg1 23.Qc1+ Kg2 24.Qd2+ Kg1 25.Qg5+ Kf2 26.Qc1 Kg2 
  +-  (4.91)   Depth: 27   00:00:44  273mN, tb=15517083

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg1 6.Qe3+ Kg2 7.Qg5+ Kf1 8.Qd5 Kg1 9.Qd4+ Kg2 10.Qe4+ Kg1 11.Qe1+ Kg2 12.Qe2+ Kg1 13.Qg4+ Kf2 14.Qf5+ Kg1 15.Qc5+ Kg2 16.Qc6+ Kg1 17.Qb6+ Kg2 18.Qg6+ Kf2 19.Qh6 Kg1 20.Qg7+ Kf2 21.Qa1 Kg2 22.Qb2+ Kg1 23.Qc1+ Kg2 24.Qd2+ Kg1 25.Qg5+ Kf2 26.Qc1 Kg2 
  +-  (4.91)   Depth: 27   00:00:56  346mN, tb=19826674

1.Qc6 Qg4 2.Rxf3 Qxf3+ 3.Qxf3+ Kg1 4.Qg3+ Kh1 5.Qf4 Kg1 6.Qe3+ Kg2 7.Qg5+ Kf1 8.Qd5 Kg1 9.Qd4+ Kg2 10.Qe4+ Kg1 11.Qg4+ Kf2 12.Qf5+ Kg1 13.Qb1+ Kg2 14.Qc2+ Kg1 15.Qc5+ Kg2 16.Qc6+ Kg1 17.Qb6+ Kg2 18.Qg6+ Kf2 19.Qh6 Kg1 20.Qg7+ Kf2 21.Qa1 Kg2 22.Qb2+ Kg1 23.Qc1+ Kg2 24.Qd2+ Kg1 25.Qg5+ Kf2 26.Qd5 Kg1 
  +-  (4.91)   Depth: 28   00:01:13  461mN, tb=27206739

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qb1 4.Kg4 Qd1 5.Qf7 Qg1+ 6.Kh4 Qd4+ 7.Rf4 Qh8+ 8.Kg4 Qc8+ 9.Rf5 Kg1 10.Qa7+ Kh1 
  +-  (4.99 !)   Depth: 28   00:01:54  719mN, tb=55168495

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qb1 4.Qc6 Qh7+ 5.Kg4 Qg8+ 6.Kf4 Qf8+ 7.Ke5 Qe7+ 8.Kd5 Kg2 9.Rb3 h1B 10.Kc4+ Kf2 11.Qxh1 Qc7+ 12.Kd3 Qd7+ 13.Kc2 Qc7+ 14.Rc3 Qf4 15.Qc6 Ke1 16.Qe6+ Kf2 
  +-  (5.07 !)   Depth: 28   00:01:56  726mN, tb=55612216

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qb1 4.Qc6 Qh7+ 5.Kg4 Qg8+ 6.Kf4 Qf8+ 7.Ke5 Qe7+ 8.Kd5 Kg2 9.Rb3 h1B 10.Kc4+ Kf2 11.Qxh1 Qc7+ 12.Kd3 Qd7+ 13.Kc2 Qc7+ 14.Kb1 Qf7 15.Rb2+ Ke3 16.Qe1+ Kd3 17.Qxa5 
  +-  (5.19 !)   Depth: 28   00:01:58  739mN, tb=56758594

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qb1 4.Qc6 Qh7+ 5.Kg4 Qg8+ 6.Kf4 Qf8+ 7.Ke5 Qe7+ 8.Kd5 Kg2 9.Rb3 h1Q 10.Kc4+ Kg1 11.Rb1+ Kf2 12.Rxh1 Qe2+ 13.Kb3 Kg3 14.Qd6+ Kg4 15.Rg1+ Kf5 
  +-  (5.37 !)   Depth: 28   00:02:01  757mN, tb=58473080

1.Rxf3 Qa7+ 2.Kg6 Qg1+ 3.Kh5 Qb1 4.Qc6 Qh7+ 5.Kg4 Qg8+ 6.Kf4 Qf8+ 7.Ke5 Qe7+ 8.Kd5 Qg5+ 9.Kd6 Kg1 10.Qb6+ Kg2 11.Qb7 Qd8+ 12.Kc5 h1Q 13.Rd3+ Kf2 14.Qb2+ Kf1 15.Qc1+ Ke2 16.Qc2+ Ke1 17.Rxd8 Qg1+ 18.Kc6 
  +-  (5.64 !)   Depth: 28   00:02:08  793mN, tb=61930541

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qe1+ Kg2 12.Qe4+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb2+ Kg1 16.Qc1+ Kg2 17.Qc6+ Kg1 18.Qb6+ Kg2 19.Qb7+ Kg1 20.Qa7+ Kg2 21.Qg7+ Kf2 22.Qh8 Kg2 23.Qa8+ Kg1 24.Qg8+ Kf1 25.Qc4+ Kg2 26.Qe2+ Kg1 27.Qg4+ Kf2 28.Qh3 Kg1 29.Qg3+ Kh1 30.Qe3 Kg2 31.Qe2+ 
  +-  (5.77)   Depth: 28   00:02:54  1100mN, tb=84595076

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qe1+ Kg2 12.Qe4+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb2+ Kg1 16.Qc1+ Kg2 17.Qc6+ Kg1 18.Qb6+ Kg2 19.Qb7+ Kg1 20.Qa7+ Kg2 21.Qg7+ Kf2 22.Qh8 Kg2 23.Qa8+ Kg1 24.Qg8+ Kf1 25.Qc4+ Kg2 26.Qe2+ Kg1 27.Qg4+ Kf2 28.Qh3 Kg1 29.Qg3+ Kh1 30.Qe3 Kg2 31.Qe2+ 
  +-  (5.77)   Depth: 28   00:02:59  1129mN, tb=85857266

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qc1+ Kg2 12.Qc2+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb7+ Kg1 16.Qb1+ Kg2 
  +-  (5.85 !)   Depth: 29   00:04:21  1668mN, tb=131563672

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qc1+ Kg2 12.Qc2+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb7+ Kg1 16.Qb1+ Kg2 
  +-  (5.93 !)   Depth: 29   00:04:30  1721mN, tb=137487815

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qc1+ Kg2 12.Qc2+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb7+ Kg1 16.Qb1+ Kg2 
  +-  (6.05 !)   Depth: 29   00:04:50  1841mN, tb=149396973

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qc1+ Kg2 12.Qc2+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb7+ Kg1 16.Qb1+ Kg2 
  +-  (6.23 !)   Depth: 29   00:05:13  1981mN, tb=166527351

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qc1+ Kg2 12.Qc2+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb7+ Kg1 16.Qb1+ Kg2 
  +-  (6.50 !)   Depth: 29   00:06:02  2273mN, tb=205979023

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qc1+ Kg2 12.Qc2+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb7+ Kg1 16.Qb1+ Kg2 
  +-  (6.90 !)   Depth: 29   00:07:07  2666mN, tb=262602134

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qc1+ Kg2 12.Qc2+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb7+ Kg1 16.Qb1+ Kg2 
  +-  (7.50 !)   Depth: 29   00:08:21  3118mN, tb=325937793

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qc1+ Kg2 12.Qc2+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb7+ Kg1 16.Qb1+ Kg2 
  +-  (8.40 !)   Depth: 29   00:09:23  3514mN, tb=379335491

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qc1+ Kg2 12.Qc2+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb7+ Kg1 16.Qb1+ Kg2 
  +-  (9.75 !)   Depth: 29   00:10:06  3803mN, tb=411125791

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qc1+ Kg2 12.Qc2+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb7+ Kg1 16.Qb1+ Kg2 
  +-  (11.77 !)   Depth: 29   00:11:25  4375mN, tb=472928001

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qc1+ Kg2 12.Qc2+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb7+ Kg1 16.Qb1+ Kg2 
  +-  (14.80 !)   Depth: 29   00:13:08  5112mN, tb=545476505

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 7.Qd5+ Kg1 8.Qg5+ Kf1 9.Qf4+ Kg2 10.Qd2+ Kg1 11.Qc1+ Kg2 12.Qc2+ Kg1 13.Qg6+ Kf1 14.Qb1+ Kg2 15.Qb7+ Kg1 16.Qb1+ Kg2 
  +-  (19.34 !)   Depth: 29   00:14:40  5835mN, tb=600657737

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 
  +-  (26.15 !)   Depth: 29   00:15:45  6340mN, tb=635809719

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 
  +-  (36.36 !)   Depth: 29   00:16:35  6742mN, tb=657328583

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ 
  +-  (51.67 !)   Depth: 29   00:17:20  7085mN, tb=673915545

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 
  +-  (74.63 !)   Depth: 29   00:17:58  7381mN, tb=686322903

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ 
  +-  (109.07 !)   Depth: 29   00:18:34  7652mN, tb=697745842

1.Rxf3 Qa7+ 2.Kg6 Qd4 3.Qc6 Qg4+ 4.Kf6 Qxf3+ 5.Qxf3+ Kg1 6.Qd1+ Kg2 
  +-  (160.73 !)   Depth: 29   00:19:08  7905mN, tb=707240279

1.Rxf3 Qa7+ 2.Ke6 Qb6+ 3.Kf5 Qb1+ 4.Kg5 Qc1+ 5.Kh5 Qb1 6.Qc6 Qh7+ 7.Kg4 Qg8+ 8.Kf4 Qf8+ 9.Ke5 Qe7+ 10.Kd4 Qb4+ 11.Kd5 Kg2 12.Rf6 h1Q 13.Ke6+ Kg3 14.Qc7+ Kh3 15.Qh7+ Qh4 16.Qxh4+ Kxh4 17.Rh6+ Kg3 18.Rxh1 Kf4 19.Re1 Kf3 20.Rf1+ 
  +-  (184.63)   Depth: 29   00:22:10  9294mN, tb=770929571

1.Rxf3 Qa7+ 2.Ke6 Qb6+ 3.Kf5 Qb1+ 4.Kg5 Qc1+ 5.Kh5 Qb1 6.Qc6 Qh7+ 7.Kg4 Qg8+ 8.Kf4 Qf8+ 9.Ke5 Qe7+ 10.Kd4 Qb4+ 11.Kd5 Kg2 12.Rf6 h1Q 13.Ke6+ Kg3 14.Qc7+ Kh3 15.Qh7+ Qh4 16.Qxh4+ Kxh4 17.Rh6+ Kg3 18.Rxh1 Kf4 19.Re1 Kf3 20.Rf1+ 
  +-  (184.63)   Depth: 29   00:22:13  9315mN, tb=771524737
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