[D]8/7Q/6p1/7p/6qk/8/7K/8 w - - 0 1
See how fast your engine can ann. a mate here....
![Smile :-)](./images/smilies/icon_smile.gif)
Moderators: hgm, Rebel, chrisw
Crafty says Mate in 12:rightrook wrote:This is an interesting end game study!
[D]8/7Q/6p1/7p/6qk/8/7K/8 w - - 0 1
See how fast your engine can ann. a mate here....
Code: Select all
Crafty v23.2 (8 cpus)
White(1): egtb off
White(1): setboard 8/7Q/6p1/7p/6qk/8/7K/8 w - - 0 1
White(1): st 300
search time set to 300.00.
White(1): display stats
display statistics at end of each search.
White(1): display
+---+---+---+---+---+---+---+---+
8 | | . | | . | | . | | . |
+---+---+---+---+---+---+---+---+
7 | . | | . | | . | | . |-Q-|
+---+---+---+---+---+---+---+---+
6 | | . | | . | | . |<P>| . |
+---+---+---+---+---+---+---+---+
5 | . | | . | | . | | . |<P>|
+---+---+---+---+---+---+---+---+
4 | | . | | . | | . |<Q>|<K>|
+---+---+---+---+---+---+---+---+
3 | . | | . | | . | | . | |
+---+---+---+---+---+---+---+---+
2 | | . | | . | | . | |-K-|
+---+---+---+---+---+---+---+---+
1 | . | | . | | . | | . | |
+---+---+---+---+---+---+---+---+
a b c d e f g h
White(1): go
time limit 5:00 (+0.00) (5:00)
depth time score variation (1)
starting thread 1
starting thread 2
starting thread 3
starting thread 4
starting thread 5
starting thread 6
starting thread 7
11 0.05 10.32 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qe6+ Kg5 6. Kh2 h4 7.
Kh3 Kf4 8. Qf6+ Ke3 9. Qe5+ Kf3 10.
Kxh4
11-> 0.05 10.32 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qe6+ Kg5 6. Kh2 h4 7.
Kh3 Kf4 8. Qf6+ Ke3 9. Qe5+ Kf3 10.
Kxh4
12 0.08 10.65 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qe5 h4 6. Qe4+ Kg5 7.
Kh3 Kf6 8. Qf4+ Ke6 9. Kxh4
12-> 0.09 10.65 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qe5 h4 6. Qe4+ Kg5 7.
Kh3 Kf6 8. Qf4+ Ke6 9. Kxh4
13 0.13 10.95 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qe5 h4 6. Qe4+ Kg5 7.
Kh3 Kf6 8. Kxh4 Kf7 9. Qd5+ Kf6 10.
Qg5+ Kf7
13-> 0.14 10.95 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qe5 h4 6. Qe4+ Kg5 7.
Kh3 Kf6 8. Kxh4 Kf7 9. Qd5+ Kf6 10.
Qg5+ Kf7
14 0.22 10.99 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qe5 h4 6. Qe4+ Kg5 7.
Kh3 Kf6 8. Qf4+ Ke6 9. Kxh4 Ke7 10.
Qe5+ Kf7
14-> 0.23 10.99 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qe5 h4 6. Qe4+ Kg5 7.
Kh3 Kf6 8. Qf4+ Ke6 9. Kxh4 Ke7 10.
Qe5+ Kf7
15 0.23 +1 1. Qe7+!
15 0.23 +3 1. Qe7+!
15 0.52 13.28 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qe2+
4. Qxe2 Kg5 5. Qf3 Kh6 6. Qf7 g5 7.
Kh3 g4+ 8. Kh4 g3 9. Qf6+ Kh7 10. Kxh5
Kg8 11. Qg6+ Kf8 <HT>
15-> 0.53 13.28 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qe2+
4. Qxe2 Kg5 5. Qf3 Kh6 6. Qf7 g5 7.
Kh3 g4+ 8. Kh4 g3 9. Qf6+ Kh7 10. Kxh5
Kg8 11. Qg6+ Kf8 <HT>
16 0.65 13.28 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qe2+
4. Qxe2 Kg5 5. Qf3 Kh6 6. Qf7 g5 7.
Kh3 g4+ 8. Kh4 g3 9. Qf6+ Kh7 10. Kxh5
Kg8 11. Qg6+ Kf8 12. Qxg3 <HT>
16-> 0.66 13.28 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qe2+
4. Qxe2 Kg5 5. Qf3 Kh6 6. Qf7 g5 7.
Kh3 g4+ 8. Kh4 g3 9. Qf6+ Kh7 10. Kxh5
Kg8 11. Qg6+ Kf8 12. Qxg3 <HT>
17 0.92 13.54 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qe2+
4. Qxe2 Kg5 5. Qf3 Kh6 6. Qf8+ Kh7
7. Kh3 g5 8. Qf7+ Kh6 9. Qf6+ Kh7 10.
Qxg5 h4 11. Kxh4 Kh8 12. Qh6+ Kg8
17-> 0.93 13.54 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qe2+
4. Qxe2 Kg5 5. Qf3 Kh6 6. Qf8+ Kh7
7. Kh3 g5 8. Qf7+ Kh6 9. Qf6+ Kh7 10.
Qxg5 h4 11. Kxh4 Kh8 12. Qh6+ Kg8
18 1.42 13.54 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qe2+
4. Qxe2 Kg5 5. Qf3 Kh6 6. Qf8+ Kh7
7. Qf7+ Kh8 8. Qxg6 h4 9. Qf7 h3 10.
Qe7 Kg8 11. Kxh3 Kh8 12. Qf8+ Kh7
18-> 1.45 13.54 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qe2+
4. Qxe2 Kg5 5. Qf3 Kh6 6. Qf8+ Kh7
7. Qf7+ Kh8 8. Qxg6 h4 9. Qf7 h3 10.
Qe7 Kg8 11. Kxh3 Kh8 12. Qf8+ Kh7
19 2.18 13.64 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qe2+
4. Qxe2 Kg5 5. Qf3 Kh6 6. Qf8+ Kh7
7. Qf7+ Kh8 8. Qxg6 h4 9. Qf7 h3 10.
Qf8+ Kh7 11. Kxh3 Kg6 12. Kh4 Kh7 13.
Qf7+ Kh6 14. Qf6+ Kh7
19-> 2.21 13.64 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qe2+
4. Qxe2 Kg5 5. Qf3 Kh6 6. Qf8+ Kh7
7. Qf7+ Kh8 8. Qxg6 h4 9. Qf7 h3 10.
Qf8+ Kh7 11. Kxh3 Kg6 12. Kh4 Kh7 13.
Qf7+ Kh6 14. Qf6+ Kh7
20 2.31 +1 1. Qe7+!
20 2.31 +3 1. Qe7+!
20 2.31 +M 1. Qe7+!
20 6.00 Mat12 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qf3+ Kg5 6. Kg3 h4+
7. Kh3 Kh6 8. Kg4 Kg7 9. Kg5 Kh7 10.
Qf7+ Kh8 11. Kxg6 h3 12. Qf8#
20-> 6.20 Mat12 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qf3+ Kg5 6. Kg3 h4+
7. Kh3 Kh6 8. Kg4 Kg7 9. Kg5 Kh7 10.
Qf7+ Kh8 11. Kxg6 h3 12. Qf8#
21 9.67 Mat12 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qf3+ Kg5 6. Kg3 h4+
7. Kh3 Kh6 8. Kg4 Kg7 9. Kg5 Kh7 10.
Qf7+ Kh8 11. Kxg6 h3 12. Qf8#
21-> 10.09 Mat12 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qf3+ Kg5 6. Kg3 h4+
7. Kh3 Kh6 8. Kg4 Kg7 9. Kg5 Kh7 10.
Qf7+ Kh8 11. Kxg6 h3 12. Qf8#
22 15.56 Mat12 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qf3+ Kg5 6. Kg3 h4+
7. Kh3 Kh6 8. Kg4 Kg7 9. Kg5 Kh7 10.
Qf7+ Kh8 11. Kxg6 h3 12. Qf8#
22-> 16.21 Mat12 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qf3+ Kg5 6. Kg3 h4+
7. Kh3 Kh6 8. Kg4 Kg7 9. Kg5 Kh7 10.
Qf7+ Kh8 11. Kxg6 h3 12. Qf8#
23 25.21 Mat12 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qf3+ Kg5 6. Kg3 h4+
7. Kh3 Kh6 8. Kg4 Kg7 9. Kg5 Kh7 10.
Qf7+ Kh8 11. Kxg6 h3 12. Qf8#
23-> 26.49 Mat12 1. Qe7+ Qg5 2. Qe4+ Qg4 3. Qe3 Qg2+
4. Kxg2 Kg4 5. Qf3+ Kg5 6. Kg3 h4+
7. Kh3 Kh6 8. Kg4 Kg7 9. Kg5 Kh7 10.
Qf7+ Kh8 11. Kxg6 h3 12. Qf8#
time=26.49 mat=-2 n=562479532 fh=99% nps=21.2M
extensions=107.3M qchecks=26.3M reduced=167.5M pruned=221.0M
predicted=0 evals=1.6M 50move=0 EGTBprobes=0 hits=0
SMP-> splits=133710 aborts=627 data=56/1024 elap=26.49
terminating SMP processes.
mate in 12 moves.
White(1): Qe7+
time used: 26.49
Stockfish also says Mate in 12:rightrook wrote:This is an interesting end game study!
[D]8/7Q/6p1/7p/6qk/8/7K/8 w - - 0 1
See how fast your engine can ann. a mate here....
Code: Select all
Searching: 8/7Q/6p1/7p/6qk/8/7K/8 w - -
infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0
2 -3.72 00:00 187 Qc7 Qh3+ Kg1 Qg3+ Qxg3+ Kxg3
2 -3.39 00:00 286 Qf7 Qe2+ Kg1
2 +0.00 00:00 420 Qe7+ Qg5 Qb4+ Qg4 Qe7+
3 +0.00 00:00 594 Qe7+ Qg5 Qb4+ Qg4 Qe7+
4 +0.00 00:00 901 Qe7+ Qg5 Qb4+ Qg4 Qe7+
5 +0.00 00:00 1385 Qe7+ Qg5 Qb4+ Qg4 Qe7+
6 +0.00 00:00 2411 Qe7+ Qg5 Qb4+ Qg4 Qe7+
7 +0.00 00:00 4101 Qe7+ Qg5 Qb4+ Qg4 Qe7+
8 > +0.20 00:00 8431 Qe7+ Qg5 Qe4+ Qg4 Qe3
9 > +1.01 00:00 8550 Qe7+ Qg5 Qe4+ Qg4 Qe3
10 > +4.24 00:00 8777 Qe7+ Qg5 Qe4+ Qg4 Qe3
11 > +86.26 00:00 95598 Qe7+ Qg5 Qe4+ Qg4 Qe3 Qf3 Qxf3 Kg5 Kg3 h4+ Kh3
Kh6 Kxh4 Kg7 Kg5
12 +12.20 00:00 122799 Qe7+ Qg5 Qe4+ Qg4 Qe3 Qf3 Qxf3 Kg5 Kg3 h4+ Kh3
Kh6 Kxh4 Kg7 Kg5
13 +89.30 00:00 676038 Qe7+ Qg5 Qe4+ Qg4 Qe3 Qh3+ Qxh3+ Kg5 Qf3 Kh6 Qf6
Kh7 Qf7+ Kh8 Qxg6 h4 Qg4 h3 Kxh3 Kh7 Kh4 Kh8
14 +89.25 00:00 716058 Qe7+ Qg5 Qe4+ Qg4 Qe3 Qh3+ Qxh3+ Kg5 Qf3 Kh6 Qf6
Kh7 Qf7+ Kh8 Qxg6 h4 Qg4 h3 Kxh3 Kh7 Kh4 Kh8
15 +89.30 00:00 747298 Qe7+ Qg5 Qe4+ Qg4 Qe3 Qh3+ Qxh3+ Kg5 Qf3 Kh6 Qf6
Kh7 Qf7+ Kh8 Qxg6 h4 Qg4 Kh7 Kh3 Kh8 Kxh4
16 +89.30 00:00 875792 Qe7+ Qg5 Qe4+ Qg4 Qe3 Qh3+ Qxh3+ Kg5 Qf3 Kh6 Qf6
Kh7 Qf7+ Kh8 Qxg6 h4 Qg4 Kh7 Kh3 Kh8 Kxh4
17 +89.35 00:00 1288k Qe7+ Qg5 Qe4+ Qg4 Qe3 Qh3+ Qxh3+ Kg5 Qf3 Kh6 Qf6
Kh7 Qf7+ Kh8 Qxg6 h4 Qg4 Kh7 Kh3 Kh8 Kxh4 Kh7 Qf3
Kg7 Kh3 Kh6
18 +89.35 00:00 2103k Qe7+ Qg5 Qe4+ Qg4 Qe3 Qh3+ Qxh3+ Kg5 Qf3 Kh6 Qf6
Kh7 Qf7+ Kh6 Kg3 h4+ Kxh4 g5+ Kh3 g4+ Kh4 g3 Kxg3
Kg5 Qe6 Kh5
19 +89.45 00:01 3962k Qe7+ Qg5 Qe4+ Qg4 Qe3 Qh3+ Qxh3+ Kg5 Qf3 Kh6 Qf6
Kh7 Qf7+ Kh6 Kg3 g5 Qf6+ Kh7 Qxg5 h4+ Kxh4 Kh8
Qe5+ Kg8 Qf6 Kh7 Kg5 Kg8 Qe7 Kh8 Qf8+ Kh7 Qf7+
Kh8 Qf6+ Kh7 Qg6+ Kh8 Qh6+ Kg8 Qf6 Kh7
20 +89.50 00:01 7123k Qe7+ Qg5 Qe4+ Qg4 Qe3 Qh3+ Qxh3+ Kg5 Qf3 Kh6 Qf6
Kh7 Qf7+ Kh6 Kg3 g5 Qf6+ Kh7 Qxg5 h4+ Kxh4 Kh8
Kg4 Kh7 Kh5 Kh8 Kg6
21 #12 00:03 21301k Qe7+ Qg5 Qe4+ Qg4 Qe3 Qg2+ Kxg2 Kg4 Qf3+ Kg5 Kg3
h4+ Kh3 Kh6 Kg4 Kg7 Kg5 h3 Qb7+ Kf8 Kf6 Kg8 Qg7#
22 #12 00:06 35964k Qe7+ Qg5 Qe4+ Qg4 Qe3 Qg2+ Kxg2 Kg4 Qf3+ Kg5 Kg3
h4+ Kh3 Kh6 Kg4 Kg7 Kg5 h3 Qb7+ Kf8 Kf6 Kg8 Qg7#
23 #12 00:09 55640k Qe7+ Qg5 Qe4+ Qg4 Qe3 Qg2+ Kxg2 Kg4 Qf3+ Kg5 Kg3
h4+ Kh3 Kh6 Kg4 Kg7 Kg5 h3 Qb7+ Kf8 Kf6 Kg8 Qg7#
Nodes: 68002776
Nodes/second: 5583609
Best move: Qe7+
Ponder move: Qg5
Rotor claims mate in 11:rightrook wrote:This is an interesting end game study!
[D]8/7Q/6p1/7p/6qk/8/7K/8 w - - 0 1
See how fast your engine can ann. a mate here....
[D] 8/8/6p1/7p/6qk/4Q3/7K/8 b - - 5 3Jan Brouwer wrote:Rotor claims mate in 11:rightrook wrote:This is an interesting end game study!
[D]8/7Q/6p1/7p/6qk/8/7K/8 w - - 0 1
See how fast your engine can ann. a mate here....
info depth 17 seldepth 30 nodes 14333149 nps 1213953 score mate 11 hashfull 435 pv h7e7 g4g5 e7e4 g5g4 e4e3 g4e2
Rotor then claims mate in 9. Hmm...zullil wrote:[D] 8/8/6p1/7p/6qk/4Q3/7K/8 b - - 5 3Jan Brouwer wrote:Rotor claims mate in 11:rightrook wrote:This is an interesting end game study!
[D]8/7Q/6p1/7p/6qk/8/7K/8 w - - 0 1
See how fast your engine can ann. a mate here....
info depth 17 seldepth 30 nodes 14333149 nps 1213953 score mate 11 hashfull 435 pv h7e7 g4g5 e7e4 g5g4 e4e3 g4e2
What if Black plays g4g2 here instead of g4e2?