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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