Author: Mike Byrne
Date: 17:17:21 05/21/04
Go up one level in this thread
On May 21, 2004 at 19:32:33, George Tsavdaris wrote:
>Black threatens mate and white's Queen. What white should play?
>Give it's Queen of course! Qf4!! and white is winning.
>
> Impressive for humans but not for computers, as any chess engine can solve
>this in seconds....
>
>[D]1kbr3r/pp6/8/P1n2ppq/2N3n1/R3Q1P1/3B1P2/2R2BK1 w - - 0 1
Black(1): mt 2
max threads set to 2
Black(1): 1kbr3r/pp6/8/P1n2ppq/2N3n1/R3Q1P1/3B1P2/2R2BK1 w - - 0 1
White(1): go
clearing hash tables
time surplus 29.92 time limit 1666:39 (1666:39)
depth time score variation (1)
starting thread 1
1 0.00 2.84 1. Qxc5
1-> 0.00 2.84 1. Qxc5
2 0.00 -1 1. Qxc5
2 0.00 -Mat01 1. Qxc5 Qh1#
2 0.00 -9.26 1. Qe5+ Nxe5 2. Nxe5 Rxd2 3. Rxc5
2 0.02 -8.25 1. Bg2 Nxe3 2. Rxe3
2-> 0.02 -8.25 1. Bg2 Nxe3 2. Rxe3
3 0.02 -8.25 1. Bg2 Nxe3 2. Rxe3
3-> 0.04 -8.25 1. Bg2 Nxe3 2. Rxe3
4 0.04 -8.62 1. Bg2 Nxe3 2. Rxe3 Qh2+ 3. Kf1 Nd3
4-> 0.05 -8.62 1. Bg2 Nxe3 2. Rxe3 Qh2+ 3. Kf1 Nd3
5 0.07 -8.58 1. Bg2 Nxe3 2. Rxe3 Nd3 3. Rc2
5 0.07 -8.29 1. Qf4+ gxf4 2. Bxf4+ Ka8 3. Nb6+ axb6
4. axb6+ Na6 5. Rxc8+ Rxc8 6. Rxa6+
bxa6 7. Bg2+ Rc6 8. Bxc6#
5-> 0.08 -8.29 1. Qf4+ gxf4 2. Bxf4+ Ka8 3. Nb6+ axb6
4. axb6+ Na6 5. Rxc8+ Rxc8 6. Rxa6+
bxa6 7. Bg2+ Rc6 8. Bxc6# (s=9)
6 0.10 +1 1. Qf4+!!
6 0.10 +3 1. Qf4+!!
6 0.10 +M 1. Qf4+!!
6 0.11 -4.58 1. Qf4+ gxf4 2. Bxf4+ Ne5 3. Bxe5+
Ka8 4. Nb6+ axb6 5. axb6+ Na6 6. Bxh8
Rxh8 7. Bxa6 bxa6 (s=8)
6-> 0.13 -4.58 1. Qf4+ gxf4 2. Bxf4+ Ne5 3. Bxe5+
Ka8 4. Nb6+ axb6 5. axb6+ Na6 6. Bxh8
Rxh8 7. Bxa6 bxa6
7 0.15 +1 1. Qf4+!!
7 0.16 +3 1. Qf4+!!
7 0.18 +M 1. Qf4+!!
7 0.22 5.74 1. Qf4+ gxf4 2. Bxf4+ Ne5 3. Bxe5+
Ka8 4. Nb6+ axb6 5. axb6+ Na6 6. Rxc8+
Rxc8 7. Rxa6+ bxa6 8. Bg2+ Qf3 9. Bxf3+
Rc6 10. Bxc6#
7-> 0.24 5.74 1. Qf4+ gxf4 2. Bxf4+ Ne5 3. Bxe5+
Ka8 4. Nb6+ axb6 5. axb6+ Na6 6. Rxc8+
Rxc8 7. Rxa6+ bxa6 8. Bg2+ Qf3 9. Bxf3+
Rc6 10. Bxc6#
8 0.27 +1 1. Qf4+!!
8 0.32 +3 1. Qf4+!!
8 0.46 +M 1. Qf4+!!
8 0.54 Mat11 1. Qf4+ gxf4 2. Bxf4+ Ne5 3. Bxe5+
Rd6 4. Bxd6+ Ka8 5. Nb6+ axb6 6. axb6+
Na6 7. Rxc8+ Rxc8 8. Rxa6+ bxa6 9.
Bg2+ Qf3 10. Bxf3+ Rc6 11. Bxc6#
8-> 0.55 Mat11 1. Qf4+ gxf4 2. Bxf4+ Ne5 3. Bxe5+
Rd6 4. Bxd6+ Ka8 5. Nb6+ axb6 6. axb6+
Na6 7. Rxc8+ Rxc8 8. Rxa6+ bxa6 9.
Bg2+ Qf3 10. Bxf3+ Rc6 11. Bxc6#
9 0.60 Mat11 1. Qf4+ gxf4 2. Bxf4+ Ne5 3. Bxe5+
Rd6 4. Bxd6+ Ka8 5. Nb6+ axb6 6. axb6+
Na6 7. Rxc8+ Rxc8 8. Rxa6+ bxa6 9.
Bg2+ Qf3 10. Bxf3+ Rc6 11. Bxc6#
9-> 0.63 Mat11 1. Qf4+ gxf4 2. Bxf4+ Ne5 3. Bxe5+
Rd6 4. Bxd6+ Ka8 5. Nb6+ axb6 6. axb6+
Na6 7. Rxc8+ Rxc8 8. Rxa6+ bxa6 9.
Bg2+ Qf3 10. Bxf3+ Rc6 11. Bxc6#
10 0.77 Mat11 1. Qf4+ gxf4 2. Bxf4+ Ne5 3. Bxe5+
Rd6 4. Bxd6+ Ka8 5. Nb6+ axb6 6. axb6+
Na6 7. Rxc8+ Rxc8 8. Rxa6+ bxa6 9.
Bg2+ Qf3 10. Bxf3+ Rc6 11. Bxc6#
10-> 0.85 Mat11 1. Qf4+ gxf4 2. Bxf4+ Ne5 3. Bxe5+
Rd6 4. Bxd6+ Ka8 5. Nb6+ axb6 6. axb6+
Na6 7. Rxc8+ Rxc8 8. Rxa6+ bxa6 9.
Bg2+ Qf3 10. Bxf3+ Rc6 11. Bxc6#
11 1.27 Mat11 1. Qf4+ gxf4 2. Bxf4+ Ne5 3. Bxe5+
Rd6 4. Bxd6+ Ka8 5. Nb6+ axb6 6. axb6+
Na6 7. Rxc8+ Rxc8 8. Rxa6+ bxa6 9.
Bg2+ Qf3 10. Bxf3+ Rc6 11. Bxc6#
11-> 1.47 Mat11 1. Qf4+ gxf4 2. Bxf4+ Ne5 3. Bxe5+
Rd6 4. Bxd6+ Ka8 5. Nb6+ axb6 6. axb6+
Na6 7. Rxc8+ Rxc8 8. Rxa6+ bxa6 9.
Bg2+ Qf3 10. Bxf3+ Rc6 11. Bxc6#
? 12 1.47 1/42* 1. Qf4+
White(1): ?
time=3.25 cpu=122% mat=-1 n=3762501 fh=97% nps=1.16M
ext-> chk=252035 cap=3220 pp=3643 1rep=29345 mate=9621
predicted=1 nodes=3762501 evals=71571 50move=0
endgame tablebase-> probes=0 hits=0
SMP-> split=707 stop=35 data=5/128 cpu=3.98 elap=3.25
mate in 11 moves.
White(1): Qf4+
time used: 3.25
Black(1):
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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