Phalanx XXV UCI JA: checkmate = 7,57

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chessica
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Phalanx XXV UCI JA: checkmate = 7,57

Post by chessica »

[d]5k2/pp3N2/5K2/5B2/8/8/8/8 w - - 0 1
#9

Phalanx XXV UCI JA:

The checkmate was found but not recognized as a checkmate.

8 00:00,000 12k 1.194k +5,78 Sf7-d6 a7-a5 Sd6xb7 a5-a4 Kf6-e5 a4-a3 Lf5-e6 Kf8-e8 Sb7-c5
9 00:00,000 29k 2.936k +6,32 Sf7-d6 a7-a5 Lf5-d7 b7-b6 Sd6-c8 b6-b5 Ld7xb5 Kf8-g8 Sc8-d6
10 00:00,010 62k 6.158k +6,42 Sf7-d6 b7-b6 Sd6-c8 b6-b5 Sc8xa7 b5-b4 Lf5-e6 Kf8-e8 Sa7-c6 b4-b3 Le6xb3
11 00:00,030 149k 4.980k +6,55 Sf7-d6 a7-a5 Lf5-d7 b7-b6 Sd6-c8 b6-b5 Ld7xb5 Kf8-g8 Sc8-d6 Kg8-f8 Kf6-e5
12 00:00,070 308k 4.398k +6,56 Sf7-d6 a7-a5 Lf5-d7 b7-b6 Sd6-c8 b6-b5 Ld7xb5 Kf8-g8 Sc8-d6 Kg8-f8 Kf6-e6 Kf8-g7
13 00:00,280 1.047k 3.738k +6,82 Sf7-d6 Kf8-g8 Sd6xb7 Kg8-f8 Sb7-c5 Kf8-g8 Sc5-b3 Kg8-f8 Kf6-e5 Kf8-e7 Lf5-e4 a7-a6 Sb3-c5
14 00:00,510 1.984k 3.890k +7,09 Sf7-d6 a7-a5 Sd6xb7 a5-a4 Sb7-c5 a4-a3 Lf5-e6 Kf8-e8 Sc5-b7 Ke8-f8 Le6-f7 a3-a2 Lf7xa2 Kf8-e8
15 00:01,110 4.116k 3.708k +7,12 Sf7-d6 Kf8-g8 Sd6xb7 Kg8-f8 Sb7-a5 Kf8-g8 Lf5-d3 Kg8-h8 Ld3-a6 Kh8-h7 Sa5-c6 Kh7-h6 Sc6xa7 Kh6-h7 Sa7-c6
16 00:02,040 7.701k 3.775k +7,12 Sf7-d6 Kf8-g8 Sd6xb7 Kg8-f8 Sb7-a5 Kf8-g8 Lf5-d3 Kg8-h8 Kf6-f7 a7-a6 Ld3xa6 Kh8-h7 Sa5-b7 Kh7-h8 La6-c4 Kh8-h7
17 00:04,450 16.327k 3.669k +7,14 Sf7-d6 Kf8-g8 Sd6xb7 Kg8-f8 Sb7-a5 Kf8-g8 Lf5-d3 Kg8-h8 Kf6-f7 a7-a6 Ld3xa6 Kh8-h7 Sa5-b7 Kh7-h8 La6-c4 Kh8-h7 Sb7-d6
18 00:08,560 31.929k 3.730k +7,19 Sf7-d6 Kf8-g8 Sd6xb7 Kg8-f8 Sb7-a5 Kf8-g8 Lf5-d3 Kg8-f8 Sa5-c6 Kf8-g8 Sc6xa7 Kg8-h8 Sa7-c6 Kh8-g8 Sc6-e7+ Kg8-h8 Se7-g6+ Kh8-h7 Ld3-c4
19 00:23,560 84.683k 3.594k +7,24 Sf7-d6 Kf8-g8 Sd6xb7 Kg8-f8 Sb7-a5 Kf8-g8 Lf5-d3 Kg8-f8 Sa5-c6 a7-a5 Ld3-c4 Kf8-e8 Sc6xa5 Ke8-d7 Kf6-e5 Kd7-e7 Sa5-b7 Ke7-f8 Ke5-d6
19 00:51,280 178.770k 3.486k +7,29 Lf5-d7 b7-b6 Sf7-g5 Kf8-g8 Ld7-e6+ Kg8-h8 Kf6-g6 b6-b5 a7-a5 Kg6-h6 b5-d7
19 00:52,820 184.768k 3.498k +7,46 Lf5-d7 b7-b5 Ld7xb5 a7-a6 Lb5xa6 Kf8-g8 La6-d3 Kg8-f8 Ld3-h7 Kf8-e8 Sf7-e5 Ke8-d8 Kf6-e6 Kd8-c7 Lh7-d3 Kc7-b6 Ke6-d6 Kb6-a5 Kd6-c5
20 00:55,250 193.676k 3.505k +7,40 Lf5-d7 b7-b5 Ld7xb5 a7-a6 Lb5xa6 Kf8-g8 La6-d3 Kg8-f8 Ld3-h7 Kf8-e8 Lh7-f5 Ke8-f8 Sf7-h6 Kf8-e8 Sh6-g8 Ke8-f8 Lf5-e6 Kf8-e8 Kf6-g7 Ke8-d8
20 00:57,060 200.029k 3.506k +7,45 Sf7-d6 Kf8-g8 Sd6-e4 a7-a5 Se4-g5 Kg8-f8 Lf5-g6 Kf8-g8 Lg6-f7+ Kg8-h8 Lf7-e6 b7-b6 Kf6-f7 a5-a4 Kf7-f8 a4-a3 Sg5-f7+ Kh8-h7 Le6-f5+
20 01:01,170 213.761k 3.495k +7,52 Sf7-d6 a7-a5 Lf5-e6 a5-a4 Le6-f7 a4-a3 Sd6xb7 a3-a2 Lf7xa2 Kf8-e8 Sb7-c5 Ke8-f8 Sc5-d7+ Kf8-e8 Kf6-e6 Ke8-d8 La2-b3 Kd8-e8 Ke6-d6 Ke8-d8 Kd6-c6
21 02:03,430 406.744k 3.295k +7,52 Sf7-d6 a7-a5 Lf5-e6 a5-a4 Le6-f7 a4-a3 Sd6xb7 a3-a2 Lf7xa2 Kf8-e8 Sb7-c5 Ke8-f8 Sc5-d7+ Kf8-e8 Kf6-e6 Ke8-d8 La2-d5 Kd8-e8 Ke6-d6 Ke8-d8 Kd6-e6 Kd8-e8
22 04:34,870 899.339k 3.272k +7,52 Sf7-d6 a7-a5 Lf5-e6 a5-a4 Le6-f7 a4-a3 Sd6xb7 a3-a2 Lf7xa2 Kf8-e8 Sb7-c5 Ke8-f8 Sc5-d7+ Kf8-e8 Kf6-e6 Ke8-d8 La2-d5 Kd8-e8 Ld5-b3 Ke8-d8 Lb3-d1 Kd8-e8 Ld1-h5+ Ke8-d8
23 09:03,570 1.746.574k 3.213k +7,52 Sf7-d6 a7-a5 Lf5-e6 a5-a4 Le6-f7 a4-a3 Sd6xb7 a3-a2 Lf7xa2 Kf8-e8 Sb7-c5 Ke8-d8 Kf6-e6 Kd8-c7 Sc5-d7 Kc7-c6 La2-c4 Kc6-c7 Lc4-d5 Kc7-d8 Ld5-e4 Kd8-e8 Le4-g6+ Ke8-d8
23 09:05,010 1.751.751k 3.214k +7,57 Lf5-d7 b7-b5 Ld7xb5 a7-a6 Lb5-a4 a6-a5 Sf7-g5 Kf8-g8 La4-b3+ Kg8-h8 Lb3-c4 a5-a4 Kf6-f7 a4-a3 Kf7-f8 a3-a2 Sg5-f7+ Kh8-h7 Lc4-d3+
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Jim Ablett
Posts: 2377
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Location: London, England
Full name: Jim Ablett

Re: Phalanx XXV UCI JA: checkmate = 7,57

Post by Jim Ablett »

chessica wrote: ↑Sat Nov 22, 2025 9:22 pm [d]5k2/pp3N2/5K2/5B2/8/8/8/8 w - - 0 1
#9

Phalanx XXV UCI JA:

The checkmate was found but not recognized as a checkmate.

8 00:00,000 12k 1.194k +5,78 Sf7-d6 a7-a5 Sd6xb7 a5-a4 Kf6-e5 a4-a3 Lf5-e6 Kf8-e8 Sb7-c5
9 00:00,000 29k 2.936k +6,32 Sf7-d6 a7-a5 Lf5-d7 b7-b6 Sd6-c8 b6-b5 Ld7xb5 Kf8-g8 Sc8-d6
10 00:00,010 62k 6.158k +6,42 Sf7-d6 b7-b6 Sd6-c8 b6-b5 Sc8xa7 b5-b4 Lf5-e6 Kf8-e8 Sa7-c6 b4-b3 Le6xb3
11 00:00,030 149k 4.980k +6,55 Sf7-d6 a7-a5 Lf5-d7 b7-b6 Sd6-c8 b6-b5 Ld7xb5 Kf8-g8 Sc8-d6 Kg8-f8 Kf6-e5
12 00:00,070 308k 4.398k +6,56 Sf7-d6 a7-a5 Lf5-d7 b7-b6 Sd6-c8 b6-b5 Ld7xb5 Kf8-g8 Sc8-d6 Kg8-f8 Kf6-e6 Kf8-g7
13 00:00,280 1.047k 3.738k +6,82 Sf7-d6 Kf8-g8 Sd6xb7 Kg8-f8 Sb7-c5 Kf8-g8 Sc5-b3 Kg8-f8 Kf6-e5 Kf8-e7 Lf5-e4 a7-a6 Sb3-c5
14 00:00,510 1.984k 3.890k +7,09 Sf7-d6 a7-a5 Sd6xb7 a5-a4 Sb7-c5 a4-a3 Lf5-e6 Kf8-e8 Sc5-b7 Ke8-f8 Le6-f7 a3-a2 Lf7xa2 Kf8-e8
15 00:01,110 4.116k 3.708k +7,12 Sf7-d6 Kf8-g8 Sd6xb7 Kg8-f8 Sb7-a5 Kf8-g8 Lf5-d3 Kg8-h8 Ld3-a6 Kh8-h7 Sa5-c6 Kh7-h6 Sc6xa7 Kh6-h7 Sa7-c6
16 00:02,040 7.701k 3.775k +7,12 Sf7-d6 Kf8-g8 Sd6xb7 Kg8-f8 Sb7-a5 Kf8-g8 Lf5-d3 Kg8-h8 Kf6-f7 a7-a6 Ld3xa6 Kh8-h7 Sa5-b7 Kh7-h8 La6-c4 Kh8-h7
17 00:04,450 16.327k 3.669k +7,14 Sf7-d6 Kf8-g8 Sd6xb7 Kg8-f8 Sb7-a5 Kf8-g8 Lf5-d3 Kg8-h8 Kf6-f7 a7-a6 Ld3xa6 Kh8-h7 Sa5-b7 Kh7-h8 La6-c4 Kh8-h7 Sb7-d6
18 00:08,560 31.929k 3.730k +7,19 Sf7-d6 Kf8-g8 Sd6xb7 Kg8-f8 Sb7-a5 Kf8-g8 Lf5-d3 Kg8-f8 Sa5-c6 Kf8-g8 Sc6xa7 Kg8-h8 Sa7-c6 Kh8-g8 Sc6-e7+ Kg8-h8 Se7-g6+ Kh8-h7 Ld3-c4
19 00:23,560 84.683k 3.594k +7,24 Sf7-d6 Kf8-g8 Sd6xb7 Kg8-f8 Sb7-a5 Kf8-g8 Lf5-d3 Kg8-f8 Sa5-c6 a7-a5 Ld3-c4 Kf8-e8 Sc6xa5 Ke8-d7 Kf6-e5 Kd7-e7 Sa5-b7 Ke7-f8 Ke5-d6
19 00:51,280 178.770k 3.486k +7,29 Lf5-d7 b7-b6 Sf7-g5 Kf8-g8 Ld7-e6+ Kg8-h8 Kf6-g6 b6-b5 a7-a5 Kg6-h6 b5-d7
19 00:52,820 184.768k 3.498k +7,46 Lf5-d7 b7-b5 Ld7xb5 a7-a6 Lb5xa6 Kf8-g8 La6-d3 Kg8-f8 Ld3-h7 Kf8-e8 Sf7-e5 Ke8-d8 Kf6-e6 Kd8-c7 Lh7-d3 Kc7-b6 Ke6-d6 Kb6-a5 Kd6-c5
20 00:55,250 193.676k 3.505k +7,40 Lf5-d7 b7-b5 Ld7xb5 a7-a6 Lb5xa6 Kf8-g8 La6-d3 Kg8-f8 Ld3-h7 Kf8-e8 Lh7-f5 Ke8-f8 Sf7-h6 Kf8-e8 Sh6-g8 Ke8-f8 Lf5-e6 Kf8-e8 Kf6-g7 Ke8-d8
20 00:57,060 200.029k 3.506k +7,45 Sf7-d6 Kf8-g8 Sd6-e4 a7-a5 Se4-g5 Kg8-f8 Lf5-g6 Kf8-g8 Lg6-f7+ Kg8-h8 Lf7-e6 b7-b6 Kf6-f7 a5-a4 Kf7-f8 a4-a3 Sg5-f7+ Kh8-h7 Le6-f5+
20 01:01,170 213.761k 3.495k +7,52 Sf7-d6 a7-a5 Lf5-e6 a5-a4 Le6-f7 a4-a3 Sd6xb7 a3-a2 Lf7xa2 Kf8-e8 Sb7-c5 Ke8-f8 Sc5-d7+ Kf8-e8 Kf6-e6 Ke8-d8 La2-b3 Kd8-e8 Ke6-d6 Ke8-d8 Kd6-c6
21 02:03,430 406.744k 3.295k +7,52 Sf7-d6 a7-a5 Lf5-e6 a5-a4 Le6-f7 a4-a3 Sd6xb7 a3-a2 Lf7xa2 Kf8-e8 Sb7-c5 Ke8-f8 Sc5-d7+ Kf8-e8 Kf6-e6 Ke8-d8 La2-d5 Kd8-e8 Ke6-d6 Ke8-d8 Kd6-e6 Kd8-e8
22 04:34,870 899.339k 3.272k +7,52 Sf7-d6 a7-a5 Lf5-e6 a5-a4 Le6-f7 a4-a3 Sd6xb7 a3-a2 Lf7xa2 Kf8-e8 Sb7-c5 Ke8-f8 Sc5-d7+ Kf8-e8 Kf6-e6 Ke8-d8 La2-d5 Kd8-e8 Ld5-b3 Ke8-d8 Lb3-d1 Kd8-e8 Ld1-h5+ Ke8-d8
23 09:03,570 1.746.574k 3.213k +7,52 Sf7-d6 a7-a5 Lf5-e6 a5-a4 Le6-f7 a4-a3 Sd6xb7 a3-a2 Lf7xa2 Kf8-e8 Sb7-c5 Ke8-d8 Kf6-e6 Kd8-c7 Sc5-d7 Kc7-c6 La2-c4 Kc6-c7 Lc4-d5 Kc7-d8 Ld5-e4 Kd8-e8 Le4-g6+ Ke8-d8
23 09:05,010 1.751.751k 3.214k +7,57 Lf5-d7 b7-b5 Ld7xb5 a7-a6 Lb5-a4 a6-a5 Sf7-g5 Kf8-g8 La4-b3+ Kg8-h8 Lb3-c4 a5-a4 Kf6-f7 a4-a3 Kf7-f8 a3-a2 Sg5-f7+ Kh8-h7 Lc4-d3+

I found the bug. When the search finds no legal moves (checkmate/stalemate), it should return immediately. However, when Syzygy tablebase probing is enabled, the code can return early with a tablebase score before checking for checkmate. I will fix bug for next release update.

Cheers,
Jim.
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