Mate in 14..........only 3 seconds!

[rightrook]

[d]2R5/8/8/8/1B4K1/8/p1p1p1p1/6kb w - - 0 1

I see that both Fritz 8 and the dedicated RISC 2500 will announce mate in 14 in only 3 seconds..

Guess that means they are about equal in playing strength....

Rob

[Terry McCracken]

[d]2R5/8/8/8/1B4K1/8/p1p1p1p1/6kb w - - 0 1

I see that both Fritz 8 and the dedicated RISC 2500 will announce mate in 14 in only 3 seconds..

Guess that means they are about equal in playing strength....

Rob

Actually it means, due to the fact the RISC 2500 is much slower than a modern PC, is much faster at finding mates. This is not surprising as Johan de Konig's program the King ver. 2.0 or close, is one of the best mate finders out there. However, this of course doesn't equate to overall playing strength or the King program today on a modern PC would blow the competition away. But you already knew this

Terry

[sje]

[d] 2R5/8/8/8/1B4K1/8/p1p1p1p1/6kb w - - 0 1

[PV] 1. Bc5+ Kf1 2. Rf8+ Ke1 3. Bb4+ Kd1 4. Rd8+ Kc1 5. Ba3+ Kb1 6. Rb8+ Ka1 7. Bb2+ Kb1 8. Be5+ Kc1 9. Bf4+ Kd1 10. Rd8+ Ke1 11. Bg3+ Kf1 12. Rf8+ Kg1 13. Kh3 a1=Q 14. Bh2# Score: MateIn14

[Allard Siemelink]

0 seconds for bright

Code: Select all

  [1/3]     0.000       8     -566  Rc8xc2 Qa2a1=Q Rc2xe2
  [1/3]     0.000      13     -497  ++3/30 Bb4c5+
  [1/4]     0.000      25     -401  Bb4c5+ Kg1f1 Rc8f8+ Kf1e1
  [1/7]     0.000      94     -401  ok/94.0
  [2/7]     0.000     128     -401  Bb4c5+ Kg1f1 Rc8f8+ Kf1e1
  [2/7]     0.000     187     -401  ok/2.0
  [3/31]    0.000    2495        0  Bb4c5+ Kg1f1 Rc8f8+ Kf1e1 Bc5b4+ Ke1d1 Rf8d8+ Kd1c1 Bb4a3+ Kc1b1 Rd8b8+ Kb1a1 Ba3b2+ Ka1b1 Bb2a3+
  [3/31]    0.000    3459        0  ok/18.5
  [4/33]    0.000   10229      +14# Bb4c5+ Kg1f1 Rc8f8+ Kf1e1 Bc5b4+ Ke1d1 Rf8d8+ Kd1c1 Bb4a3+ Kc1b1 Rd8b8+ Kb1a1 Ba3b2+ Ka1b1 Bb2e5+ Kb1c1 Be5f4+ Kc1d1 Rb8d8+ Kd1e1 Bf4g3+ Ke1f1 Rd8f8+ Kf1g1 Kg4h3 Qa2a1=Q Bg3h2+
  [4/33]    0.015   12095      +14# ok/3.5

[JVMerlino]

And now CM9_R1 finds Mate in 14 in approximately three-hundredths of a second on a P4-2.4.

jm

[Cubeman]

Tested some PDA programs.
Fruit 2.1, 0.5 seconds with mate #14 announcement.
Toga ll 1.2.1a , 2.5 seconds.Mate #14
Pocket Fritz2, 30 seconds.Mate #14
Chess Genius, 30 seconds.Mate #14
Hiarcs 9.6 could not solve it in 5 minutes, even after playing thru the moves up to when the Black king is on a1 Hiarcs wants to take the draw by Ba3+ etc.Only after forcing the position to when there is only 5 moves left to mate does it see the mate.

[tjfroh]

Mr. Basham,

Rybka 2.3.1 announces Mate in 16 in 0 seconds on my old AMD 1500 MHz machine with 192 MB hashtables. Machines are quite good at these forced mates.

Enjoy,

TJ

[Pradu]

0 seconds for Buzz too:

Code: Select all

4 31973 6 9123 Bc5+ Kf1 Rf8+ Ke1 Bb4+ Kd1 Rd8+ Kc1 Ba3+ Kb1 Rb8+ Ka1 Bb2+ Kb1 Be5+ Kc1 Bf4+ Kd1 Rd8+ Ke1 Bg3+ Kf1 Rf8+ Kg1 Kh3 a1=Q Bh2#

Singular-reply extensions help greatly in this position. Engines that have them will solve them fast.

[Cubeman]

Why do all the engines decide to queen the "a" pawn when faced with the mate in 1.Why not any of the other pawns?

[Alessandro Scotti]

Why do all the engines decide to queen the "a" pawn when faced with the mate in 1.Why not any of the other pawns?

I don't know if it helps, but Hamsters likes to promote the e pawn...