What is the outcome of this unusual endgame

[hgm]

..., while BBPPP vs NNPP is an easy win even if all pawns are on the same side.

This isn't obvious to me at all. KBBKN is mostly draw because of the 50-move rule. So in KBBPKNN the Pawn is vulnerable for Knight sac. If you don't have passers already, black would trade a Pawn as soon as you try to pass it.This means you would have to gain a Pawn. Which seems difficult, as any particular Pawn can only be attacked by a single Bishop.

[mwyoung]

Against a pair of knights the bishops will almost certainly dominate - so much so that the rule of thumb 'B+B = N+N+P' has more than a ring of truth to it.

It may be winning for black.

You clearly do not know chess theory. Knights are not weaker when the pawns on the same side of the board.

A very bold statement.

If that's true then we wouldn't even debate if NNPPPP vs BBPP is a win or a draw. Well, it is most probably a win but that only suggests how BB duo is strong regardless of pawns. BBPP vs NNPPP is a draw, while BBPPP vs NNPP is an easy win even if all pawns are on the same side.

Here is a bolder questions. If your grandma had wheels would she be a wagon.

Let's debate that first, before known chess theory.

[Karlo Bala]

Against a pair of knights the bishops will almost certainly dominate - so much so that the rule of thumb 'B+B = N+N+P' has more than a ring of truth to it.

It may be winning for black.

You clearly do not know chess theory. Knights are not weaker when the pawns on the same side of the board.

A very bold statement.

If that's true then we wouldn't even debate if NNPPPP vs BBPP is a win or a draw. Well, it is most probably a win but that only suggests how BB duo is strong regardless of pawns. BBPP vs NNPPP is a draw, while BBPPP vs NNPP is an easy win even if all pawns are on the same side.

Here is a bolder questions. If your grandma had wheels would she be a wagon.

Let's debate that first, before known chess theory.

I guess you're a GM, so you can teach us all lessons...

[mwyoung]

Against a pair of knights the bishops will almost certainly dominate - so much so that the rule of thumb 'B+B = N+N+P' has more than a ring of truth to it.

It may be winning for black.

You clearly do not know chess theory. Knights are not weaker when the pawns on the same side of the board.

A very bold statement.

If that's true then we wouldn't even debate if NNPPPP vs BBPP is a win or a draw. Well, it is most probably a win but that only suggests how BB duo is strong regardless of pawns. BBPP vs NNPPP is a draw, while BBPPP vs NNPP is an easy win even if all pawns are on the same side.

Here is a bolder questions. If your grandma had wheels would she be a wagon.

Let's debate that first, before known chess theory.

I guess you're a GM, so you can teach us all lessons...

No but I have been taught by GMs. And I just did!

[peter]

Is adjusting the pawns to the first rank helping white.

[d]5k2/4pppp/3n2n1/8/8/1B6/1B3PP1/5K2 w - - 0 1

Cfish dev -1.5ish

The new position is a question of its own of course but at least closely related to the first one.
The position in 4x8 chess has as well as nothing to do with the two postions in classical chess, but that was probably a joke of yours, wasn't it?

Here I'd have a single one game to your new position again, Dragon with Black against Cfish (Use NNUE Hybrid, again the net quoted in first game), 12 threads each of same CPU as before too, 4G hash each and 6men Syzygys again:
[pgn][Event "SCHWARZERBLITZ, Schnellschach 30m+5s"]
[Site "SchwarzerBlitz"]
[Date "2020.11.24"]
[Round "1"]
[White "CF EXT 161120 x64 SSE41 N"]
[Black "Dragon by Komodo Chess 64-bit"]
[Result "0-1"]
[Annotator "-1.33;-1.99"]
[SetUp "1"]
[FEN "5k2/4pppp/3n2n1/8/8/1B6/1B3PP1/5K2 w - - 0 1"]
[PlyCount "60"]
[TimeControl "1800+5"]

1. g3 {[%eval -133,52] [%emt 0:00:33]} Kg8 {[%eval -199,30] [%emt 0:00:59]} 2.
Kg2 {[%eval -133,54] [%emt 0:00:00]} Nf8 {[%eval -176,30] [%emt 0:01:37] (e6)}
3. f4 {[%eval -133,53] [%emt 0:00:21] (g4)} h5 {[%eval -192,34] [%emt 0:00:50]}
4. Bc2 {[%eval -133,61] [%emt 0:00:00] (Kh3)} g6 {[%eval -198,38] [%emt 0:00:
58]} 5. Bb3 {[%eval -133,65] [%emt 0:00:00] (Lc3)} Nd7 {[%eval -190,40] [%emt
0:00:54]} 6. Kf3 {[%eval -133,66] [%emt 0:00:00] (Lc2)} Nf6 {[%eval -187,39]
[%emt 0:02:09] (Sc5)} 7. Be5 {[%eval -133,60] [%emt 0:00:27] (La3)} Nf5 {
[%eval -187,38] [%emt 0:00:41] (Sg4)} 8. Bc4 {[%eval -133,64] [%emt 0:00:26]
(Lc3)} Ng4 {[%eval -190,35] [%emt 0:00:34] (Sh6)} 9. Bc3 {[%eval -133,59]
[%emt 0:00:27]} Nge3 {[%eval -193,37] [%emt 0:01:10] (e6)} 10. Bd3 {[%eval
-133,60] [%emt 0:00:26] (Le2)} Kf8 {[%eval -203,36] [%emt 0:00:45] (Sd5)} 11.
Bd2 {[%eval -133,61] [%emt 0:00:27] (Le4)} Nc2 {[%eval -208,38] [%emt 0:01:38]
(Sd5)} 12. Bc3 {[%eval -133,59] [%emt 0:00:28] (Kg2)} Ncd4+ {[%eval -198,36]
[%emt 0:00:54]} 13. Ke4 {[%eval -133,63] [%emt 0:00:00] (Kg2)} Nb5 {[%eval
-225,34] [%emt 0:00:43] (Se6)} 14. Bb2 {[%eval -204,59] [%emt 0:06:03] (Le1)}
Nbd6+ {[%eval -262,30] [%emt 0:00:39]} 15. Kf3 {[%eval -229,50] [%emt 0:00:00]}
Ke8 {[%eval -263,35] [%emt 0:01:08]} 16. Bb1 {[%eval -244,51] [%emt 0:00:00]
(Lc2)} Kd7 {[%eval -276,31] [%emt 0:00:40]} 17. g4 {[%eval -262,49] [%emt 0:01:
16]} hxg4+ {[%eval -305,30] [%emt 0:00:00]} 18. Kxg4 {[%eval -275,48] [%emt 0:
00:53]} Kc6 {[%eval -306,31] [%emt 0:00:00]} 19. Ba2 {[%eval -252,46] [%emt 0:
00:26] (Lc3)} Kc5 {[%eval -364,30] [%emt 0:00:56]} 20. Ba1 {[%eval -287,48]
[%emt 0:00:16] (Lb1)} f6 {[%eval -391,29] [%emt 0:00:33] (Sd4)} 21. Bc3 {
[%eval -359,43] [%emt 0:01:35] (Kh3)} Ne4 {[%eval -409,33] [%emt 0:00:55]} 22.
Bb2 {[%eval -444,49] [%emt 0:01:53]} Nd2 {[%eval -411,37] [%emt 0:00:00]} 23.
Ba3+ {[%eval -449,41] [%emt 0:01:01] (Kh3)} Kd4 {[%eval -477,31] [%emt 0:00:35]
} 24. Be6 {[%eval -475,44] [%emt 0:00:11]} Ke4 {[%eval -516,34] [%emt 0:00:26]}
25. Ba2 {[%eval -675,40] [%emt 0:02:17]} Kd3 {[%eval -614,38] [%emt 0:00:00]
(Ke3)} 26. Kh3 {[%eval -478,39] [%emt 0:00:14] (Lc5)} Nd6 {[%eval -654,31]
[%emt 0:00:40]} 27. Bg8 {[%eval -524,44] [%emt 0:00:24] (Lc5)} Ke4 {[%eval
-716,30] [%emt 0:00:48] (Ke3)} 28. Kg3 {[%eval -701,35] [%emt 0:01:01] (Lh7)}
Nf1+ {[%eval -770,29] [%emt 0:00:43]} 29. Kf2 {[%eval -719,38] [%emt 0:00:13]}
Ne3 {[%eval -763,29] [%emt 0:00:30]} 30. Bb3 {[%eval -728,37] [%emt 0:00:04]
(Lh7)} f5 {[%eval -811,28] [%emt 0:00:30] (Sef5)} 0-1[/pgn]

[yurikvelo]

added KNNPvKBB to partial 7-men set and reanalyzed from move #23 (after very deep run to move #22)

[pgn][SetUp "1"]
[FEN "8/5pk1/4pnp1/3n3p/8/3B4/3B1PP1/6K1 w - - 0 1"]


1. Bc1 Kf8 2. Ba3+ Ke8 3. Kh2 Kd7 4. Kg3 e5 5. Bc1 Ke7 6. f3 Nd7 7. Bb5 f6
8. Kh3 Nf4+ 9. Kh2 h4 10. Ba3+ Ke6 11. Bb4 Nb6 12. Ba6 Kf5 13. Bd2 Kg5 14.
g3 hxg3+ 15. Kxg3 Nd5 16. Bb5 Kh5 17. Kf2 Ne7 18. Be1 Kg5 19. Bc4 Nf5 20.
Ba6 Kh5 21. Ba5 Kh4 22. Bd8 Nd5 23. Bc4 Nfe7 24. Bb5 g5 25. Bd7 f5 26. Be6
Nf4 27. Bd7 Nd3+ 28. Kf1 Nc5 29. Bb5 Nd5 30. Bc6 Nf4 31. Bf6 Ncd3 32. Bd7
Nh5 33. Bd8 Nc5 34. Bc6 e4 35. fxe4 Ng3+ 36. Kf2 Ngxe4+ 37. Ke3 f4+ 38. Kf3
Nd2+ 39. Ke2 Ndb3 40. Ke1 Ne6 41. Be7 Nbd4 42. Bg2 Kg3 43. Bd5 g4 44. Bd6
Kh4 45. Bb8 f3 46. Be5 Kg5 47. Be4 Nf5 48. Bb8 Nf4 49. Bc7 Ng3 50. Bc2 Nh1
51. Bd8+ Kh5 52. Bb6 g3 53. Be4 Kg4 54. Ba7 g2 55. Kd2 Kg3 56. Ke1 Nd3+ 57.
Bxd3 f2+ 58. Kd1 f1=Q+ 59. Kc2 Qf3 60. Bg1 Nf2 61. Kc3 Qxd3+ 62. Kb4 Qb1+
63. Kc3 Ne4+ 64. Kd4 Qxg1+ 65. Kxe4 Qc5 66. Kd3 Kf3 67. Kd2 g1=Q 68. Kd3
Qd1# *[/pgn]


D=64, 17 206 MN, 286 MTBHits
-4,66 25. ... f5 26.Be6 Nf4 27.Bd7 Nd3+ 28.Kf1 Nc5 29.Bb5 Nd5 30.Bc6 Nf4

D=56, 5 689 MN, 74.6 MTBHits
-5,33 33.Bd8 Nc5 34.Bc6 e4 35.Be7 Nd3 36.fxe4 Ng3+ 37.Kg2 Nxe4 38.Ba8 Nd2
FEN: 3B4/3B4/8/2n1pppn/7k/5P2/8/5K2 w - - 16 34

D=52, 2 923 MN, 26.2 MTBHits
-5,50 34.Bc6 e4 35.Be7 Nd3 36.fxe4 Ng3+ 37.Kg2 Nxe4 38.Ba8 Nd2 39.Bb7 f4

D=52, 23 427 MN, 144 MTBHits
-10,70 37.Ke3 f4+ 38.Kf3 Nd2+ 39.Ke2 Ndb3 40.Kf2 Nd4 41.Ba8 Nce6 42.Bf6 Kh5

[Karlo Bala]

..., while BBPPP vs NNPP is an easy win even if all pawns are on the same side.

This isn't obvious to me at all. KBBKN is mostly draw because of the 50-move rule. So in KBBPKNN the Pawn is vulnerable for Knight sac. If you don't have passers already, black would trade a Pawn as soon as you try to pass it.This means you would have to gain a Pawn. Which seems difficult, as any particular Pawn can only be attacked by a single Bishop.

Perhaps "...BBPPP vs NNPP is an easy win..." was an overstatement, but it should be doable.

The main problem is that the NN side cannot create a good outpost for knights and knights are vulnerable to zugzwang. NN could be pushed to the edge of the board where the king must defend them (or knights must defend each other - zugzwang problem).

It seems that it is easier to win if all pawns are on the side. If pawns are in the center the BB side must work much harder since it is more difficult to transfer the king into the enemy territory.

Of course, I don't have proof...

For example, SF vs SF 5 man TB (zugzwang at the end)

[pgn]
[Event "Computer chess game"]
[Site "INTEL"]
[Date "2020.11.24"]
[Round "?"]
[White "Stockfish_20011801_x64_bmi2"]
[Black "Stockfish_20011801_x64_bmi2"]
[Result "*"]
[BlackElo "2000"]
[Time "22:30:16"]
[WhiteElo "2000"]
[TimeControl "1800+30"]
[SetUp "1"]
[FEN "1n2k1n1/3pp3/8/8/8/8/2PPP3/2B1KB2 w - - 2 1"]
[Termination "normal"]
[PlyCount "50"]
[WhiteType "program"]
[BlackType "program"]

1. c4 {(c2-c4 Nb8-c6 Bc1-b2 e7-e6 e2-e3 d7-d6 Ke1-e2 Ke8-e7 Bb2-c3 d6-d5
c4-c5 e6-e5 Bf1-g2 Ng8-f6 d2-d3 Ke7-e6 Bc3-e1 Nf6-d7 Bg2-h3+ Ke6-e7 Be1-h4+
Ke7-e8 Bh3-g2 Nd7xc5 Bg2xd5 Ke8-d7 Bh4-g3 Nc6-e7 Bd5-c4 Kd7-d6 d3-d4 Nc5-d7
Bc4-b5 Kd6-e6 Ke2-d3 e5xd4 Bb5-c4+ Ke6-f5 Kd3xd4) +1.93/34 127} d6 {(d7-d6
Bf1-g2 e7-e5 e2-e3 Ke8-d7 Ke1-e2 Ng8-f6 Bc1-b2 Nb8-a6 d2-d3 Na6-c5 Bb2-c3
Nc5-a4 Bg2-h3+ Kd7-e7 Bc3-b4 Nf6-d7 Bh3-g2 Nd7-c5 Bg2-c6 Na4-b6 Bb4-e1
Ke7-e6 Be1-a5 Nb6-a4 Ba5-b4 Na4-b6 Bc6-b5 Ke6-e7 Bb4-e1 e5-e4 d3-d4 Nc5-d3
Be1-h4+ Ke7-e6 Ke2-d2 d6-d5 c4xd5+ Nb6xd5 Bb5xd3 e4xd3 Kd2xd3 Nd5-e7)
-2.13/37 80} 2. d3 {(d2-d3 e7-e5 Ke1-d2 Nb8-c6 Kd2-c3 Ke8-d7 e2-e3 Kd7-c7
Bf1-g2 Nc6-e7 Bc1-d2 Ng8-f6 Bd2-e1 Nf6-g4 Kc3-d2 Ng4-h6 d3-d4 Ne7-g6 Bg2-e4
Ng6-f8 Kd2-c3 Nf8-e6 Be1-g3 e5xd4+ e3xd4 Kc7-d7 Bg3-e1 Nh6-g8 Be1-d2 Kd7-e7
Be4-d5 Ng8-f6 Bd5-g2 Nf6-h5 Bd2-e1 Nh5-f4 Be1-h4+ Ke7-d7 Bg2-f3 Nf4-g6)
+2.24/37 61} e5 {(e7-e5 Ke1-d2 Ke8-d7 Kd2-c3 Ng8-e7 e2-e3 Kd7-c7 Bf1-g2
Nb8-c6 Bc1-d2 Ne7-f5 Bg2-h3 Nf5-e7 d3-d4 d6-d5 c4-c5 e5xd4+ e3xd4 Nc6-a7
Bd2-f4+ Kc7-d8 Bh3-g2 Kd8-d7 Kc3-d3 Kd7-e6 Bg2-h3+ Ke6-f7 Bf4-e3 Ne7-c6
Be3-f2 Nc6-b4+ Kd3-c3 Nb4-c6 Bh3-f1 Kf7-e7 Bf2-g3 Ke7-d7 Bf1-e2 Kd7-e6
Bg3-f2 Ke6-d7 Bf2-e3 Nc6-d8) -2.24/42 55} 3. Kd2 {(Ke1-d2 Nb8-c6 Kd2-c3
Ke8-d8 Bc1-g5+ Kd8-c7 Bf1-g2 Ng8-e7 Bg2-f3 Ne7-g6 e2-e3 Ng6-e7 Bg5-h4
Ne7-f5 Bh4-f2 Nf5-h6 d3-d4 Nc6-d8 Bf3-e4 Nd8-e6 Bf2-g3 e5xd4+ e3xd4 Kc7-d7
Bg3-h4 Kd7-e8 Bh4-e1 Ke8-e7 Be1-d2 Nh6-g8 Kc3-d3 Ke7-f6 Bd2-c3 Kf6-e7
Bc3-e1 Ng8-h6 Be1-g3 Ke7-d7 Kd3-c3) +2.24/37 25} Nc6 {(Nb8-c6 Kd2-c3 Nc6-d4
Bc1-e3 Ng8-e7 Be3-f2 Ke8-d8 e2-e3 Nd4-e6 Bf2-h4 Kd8-e8 Bh4-e1 Ne6-g5 Bf1-g2
Ne7-f5 Be1-f2 Nf5-e7 Kc3-b4 Ng5-e6 Bg2-f3 Ne6-c5 Kb4-c3 Ke8-f7 d3-d4 e5xd4+
e3xd4 Nc5-e6 Bf3-g4 Ne7-g8 Bf2-e3 Kf7-f6 Kc3-d3 Kf6-f7 Bg4-h3 Ng8-f6 Be3-d2
Kf7-e7 Kd3-e3 Ne6-g5 Bh3-f5 Nf6-g8 Ke3-d3 Ng5-e6 Bd2-e3 Ke7-f6 Bf5-h3
Ng8-e7 d4-d5 Ne6-g5 Be3-d4+ Kf6-f7 Bh3-g4) -2.25/44 177} 4. Kc3 {(Kd2-c3
Nc6-d4 Bc1-e3 Ng8-e7 Be3-f2 Ke8-d8 e2-e3 Nd4-e6 Bf1-e2 Kd8-c7 Be2-g4 Ne6-c5
Bf2-h4 Ne7-c6 Bg4-d1 Nc5-d7 d3-d4 Nd7-b6 Bh4-g3 Kc7-c8 Bg3-e1 Kc8-c7 Kc3-d3
e5xd4 e3xd4 d6-d5 c4-c5 Nb6-c4 Bd1-b3 Nc6-e7 Be1-g3+ Kc7-d7 Bb3xc4 d5xc4+
Kd3xc4 Kd7-c6 Bg3-f2 Ne7-d5 Kc4-d3 Kc6-d7 Bf2-h4 Kd7-c6 Kd3-e4 Nd5-c3+
Ke4-e5 Nc3-d5 Bh4-g3 Nd5-c3 Bg3-h2 Nc3-d5 Bh2-f4 Nd5-c7) +2.35/43 18} Nd4
{(Nc6-d4 Bc1-e3 Ng8-e7 Be3-f2 Ke8-d8 e2-e3 Nd4-e6 Bf1-e2 Kd8-c7 Be2-g4
Ne6-c5 Bf2-h4 Ne7-c6 Bg4-d1 Nc5-d7 d3-d4 Nd7-b6 Bh4-g3 Nc6-a5 Bd1-e2 Na5-c6
Be2-f1 Kc7-d7 Bg3-f2 Kd7-c7 Bf1-g2 Kc7-d7 Bg2-h3+ Kd7-c7 Bh3-f1 Nc6-e7
Bf1-g2 e5xd4+ e3xd4 d6-d5 c4-c5 Nb6-d7 Bf2-g3+ Kc7-c6 Bg3-f4 Ne7-g6 Bf4-g5
Nd7xc5 d4xc5 Kc6xc5 Bg2-f1 d5-d4+ Kc3-d3 Kc5-d5 Bf1-g2+ Kd5-e5 Kd3-c4
Ng6-f4) -2.41/45 104} 5. Be3 {(Bc1-e3 Ng8-e7 Be3-f2 Ke8-d8 e2-e3 Nd4-e6
Bf1-e2 Kd8-c7 Be2-g4 Ne6-c5 Bf2-h4 Ne7-c6 Bg4-d1 Nc5-d7 d3-d4 Nd7-b6 Bh4-g3
Kc7-d7 Bd1-g4+ Kd7-c7 Bg4-e2 e5xd4+ e3xd4 Nb6-a4+ Kc3-d3 Kc7-d7 Bg3-e1
Kd7-c7 Kd3-e4 Nc6-e7 Be1-d2 Ne7-c6 Be2-d1 Na4-b6 Ke4-d3 Kc7-d8 Bd2-e1
Kd8-d7 Bd1-e2 d6-d5 Be2-g4+ Kd7-c7 Be1-g3+ Kc7-b7 c4-c5 Nb6-c4 Bg4-e6
Nc4-b2+ Kd3-c3 Nb2-a4+ Kc3-d2 Nc6xd4 Be6xd5+ Kb7-a6) +2.43/45 33} Ne7
{(Ng8-e7 Be3-f2 Ne7-c6 e2-e3 Nd4-e6 Bf2-h4 Ne6-c5 d3-d4 e5xd4+ e3xd4
Nc5-a4+ Kc3-d3 Nc6-a5 Kd3-c2 Na4-b6 Kc2-c3 Na5-c6 Bh4-g3 d6-d5 c4-c5 Nb6-c8
Bf1-g2 Nc8-e7 Bg3-h4 Ne7-f5 Bh4-f6 Nf5-e3 Bg2-h3 Ne3-d1+ Kc3-d2 Nd1-f2
Bh3-f5 Ke8-f7 Bf6-e5 Kf7-e8 Kd2-e2 Nc6-e7 Bf5-e6 Nf2-e4 Ke2-e3 Ne4-g5
Be6-g4 Ng5-f7 Be5-g3 Nf7-d8 Ke3-d3 Nd8-c6 Bg3-f4 Ke8-d8 Bg4-e6 Nc6-b4+
Kd3-c3 Nb4-a6) -2.42/47 97} 6. Bf2 {(Be3-f2 Ne7-c6 e2-e3 Nd4-e6 Bf2-h4
Ne6-c5 d3-d4 e5xd4+ e3xd4 Nc5-a4+ Kc3-d3 Nc6-a5 Kd3-c2 Na4-b6 Kc2-c3 Na5-c6
Bf1-e2 Nb6-a4+ Kc3-d3 Nc6-b4+ Kd3-d2 Nb4-c6 Bh4-f2 Ke8-d7 Be2-f1 Kd7-c7
Kd2-c2 Nc6-e7 Bf1-h3 Ne7-c6 Bh3-g2 Nc6-a5 Bg2-f1 Kc7-d8 Bf1-e2 Kd8-c7
Bf2-g3 Na5-c6 Kc2-d3 Kc7-d7 Be2-g4+ Kd7-e7 Bg3-h4+ Ke7-e8 Kd3-e4 Na4-c3+
Ke4-e3 Nc3-a4 Bh4-e1 Na4-b6 Ke3-d3 Ke8-d8 Be1-d2 Kd8-c7 Bg4-h3 Nb6-a4
Bh3-f1 Na4-b6 Bd2-f4 Kc7-d7 Bf4-g5 Nc6-a5 Kd3-c3 Na5-c6) +2.42/49 20} Kd8
{(Ke8-d8 e2-e3 Nd4-c6 Bf1-g2 Kd8-d7 d3-d4 Kd7-c7 Bg2-e4 Ne7-g8 Bf2-g3
Ng8-f6 Be4-f3 Nf6-d7 Bf3-g2 Kc7-b6 Bg2-e4 Kb6-c7 Be4-f3 Nc6-e7 Kc3-d3
Ne7-f5 Bg3-h2 Kc7-d8 Bf3-g4 Nf5-e7 Bh2-g3 e5xd4 e3xd4 Nd7-f6 Bg4-h3 d6-d5
c4-c5 Kd8-e8 Bh3-e6 Nf6-h7 Bg3-f4 Nh7-f8 Be6-g4 Nf8-h7 Bg4-f3 Ke8-d7 Bf4-d6
Nh7-f6 Bf3-g2 Kd7-e6 Bg2-h3+ Ke6-f7 Bd6-e5 Ne7-c6 Bh3-g2 Nc6-e7 Be5-f4
Nf6-h5 Bf4-g5 Nh5-f6) -2.53/47 262} 7. e3 {(e2-e3 Nd4-c6 Bf1-g2 Kd8-d7
d3-d4 Kd7-c7 Kc3-d3 Nc6-b4+ Kd3-d2 Nb4-c6 Kd2-c3 e5xd4+ e3xd4 Nc6-d8 Bg2-f3
Nd8-f7 Bf3-e4 Nf7-g5 Be4-d3 Ng5-e6 Bf2-h4 Ne7-g8 Bd3-f5 Ne6-g7 Bf5-h3
Ng8-h6 Bh4-g5 Nh6-f7 Bg5-e3 Nf7-d8 Bh3-g4 Ng7-e8 Be3-g5 Nd8-f7 Bg5-f4
Nf7-d8 Bf4-g3 Ne8-f6 Bg4-f3 Nd8-e6 Bg3-h4 Nf6-e8 Kc3-d3 Ne6-f4+ Kd3-e3
Nf4-g6) +2.60/42 27} Ndc6 {(Nd4-c6 Bf1-g2 Kd8-c7 d3-d4 e5xd4+ e3xd4 Nc6-d8
Bg2-h3 Nd8-b7 Bf2-g3 Kc7-b6 Bg3-h4 Ne7-c6 Bh3-g2 Kb6-c7 Bg2-e4 Nc6-d8
Be4-f5 Nd8-f7 Bh4-g3 Kc7-b6 Bf5-e4 Nf7-d8 Kc3-d3 Nd8-c6 Bg3-f4 Nc6-d8
Be4-d5 Kb6-c7 Bf4-g3 Nd8-c6 Kd3-c3 Nc6-d8 Bd5-f3 Kc7-b6 Kc3-d3 Nd8-c6
Bg3-f2 Nc6-d8 Bf2-h4 Nd8-e6 Bh4-g3 Ne6-d8) -2.64/45 123} 8. Bg2 {(Bf1-g2
Kd8-c7 d3-d4 e5xd4+ e3xd4 Nc6-d8 Bg2-h3 Nd8-b7 Bf2-g3 Kc7-b6 Bg3-h4 Ne7-c6
Bh3-g2 Kb6-c7 Bg2-e4 Nc6-d8 Be4-f5 Kc7-c6 Bf5-g4 Kc6-c7 Bh4-g3 Kc7-b6
Bg4-f3 Nd8-c6 Bg3-h4 Kb6-c7 Bh4-f6 Nb7-d8 Bf3-g4 Nd8-b7 Bg4-h3 Kc7-b6
Bh3-e6 Kb6-c7 Bf6-h4 Nb7-d8 Be6-f5 Nd8-b7 Bh4-g3 Nc6-d8 Bf5-h3 Kc7-b6
Bh3-g2 Nd8-c6 Bg2-f3 Nc6-d8 Kc3-d3 Nd8-c6 Bg3-h4 Kb6-c7) +2.64/47 38} Kd7
{(Kd8-d7 d3-d4) -2.96/47 234} 9. d4 {(d3-d4 e5xd4+ e3xd4 Kd7-c7 Bg2-f3
Nc6-d8 Bf3-e4 Nd8-e6 Bf2-h4 Kc7-d7 Be4-c2 Kd7-e8 d4-d5 Ne6-c5 Kc3-b4 Nc5-b7
Bh4-f2 Ke8-d7 Bc2-e4 Nb7-d8 Kb4-b5 Nd8-b7 Bf2-d4 Kd7-c7 Bd4-b6+ Kc7-d7
Be4-f3 Kd7-c8 Kb5-b4 Ne7-g6 Bf3-e4 Ng6-e7 Bb6-d4 Nb7-d8 Bd4-e3 Kc8-d7
Be3-f2 Nd8-f7 Bf2-h4 Nf7-d8 Be4-c2 Nd8-b7 Bh4-f2 Kd7-c7 Kb4-b5 Ne7-c8
Bc2-e4 Nc8-e7 Be4-f3 Ne7-c8) +2.96/46 35} Kc7 {(Kd7-c7 Kc3-d3) -3.18/47
319} 10. Kd3 {(Kc3-d3 Ne7-g8 Bf2-g3 e5xd4 e3xd4 Kc7-d7 Bg2-f3 Nc6-d8 Kd3-e4
Nd8-b7 Bf3-g2 Ng8-e7 Ke4-d3 Ne7-c6 Bg2-f3 Nc6-d8 Kd3-e4 Nd8-c6 Bf3-g4+
Kd7-e8 Bg4-d1 Nc6-e7 Bd1-f3 Ke8-d8 Bg3-f4 Kd8-d7 Ke4-d3 Ne7-c6 Bf3-g4+
Kd7-e8 Kd3-c3 Nc6-a5 Bg4-h5+ Ke8-d7 Bf4-g3 Nb7-d8 Bh5-g4+ Kd7-c6 d4-d5+
Kc6-c7 c4-c5 Na5-b7 c5-c6 Nb7-c5 Kc3-c4 Nd8-f7 Bg3-f4 Nc5-e4 Bg4-f5 Ne4-f6
Kc4-d4 Nf6-h5) +3.23/35 29} exd4 {(e5xd4 e3xd4 Nc6-b4+ Kd3-d2 Nb4-c6 Kd2-c3
Nc6-d8 Bg2-e4 Nd8-f7 Bf2-h4 Kc7-d7 d4-d5 Ne7-c8 Bh4-g3 Nc8-b6 Kc3-b4 Kd7-c7
c4-c5 Nb6-d7 c5-c6 Nd7-f6 Be4-g2 Nf7-e5 Kb4-b5 Ne5-g6 Bg2-f3 Ng6-e7 Kb5-c4
Nf6-e8 Bg3-e1 Kc7-b8 Be1-b4 Ne7-c8 Bf3-e2 Ne8-f6 Kc4-d4 Kb8-a7 Bb4-d2
Ka7-b8 Bd2-e1 Nc8-e7 Be2-f3 Nf6-e8 Be1-b4 Kb8-a7 Kd4-c4 Ka7-b6 Bb4-e1
Ne7-c8 Bf3-g4 Nc8-e7 Be1-f2+ Kb6-c7 Bg4-d7 Ne8-f6 Bd7-e6 Ne7xc6 d5xc6
Kc7xc6 Be6-f5 Nf6-e8 Bf2-g3 Ne8-c7 Bf5-g4) -3.23/42 55} 11. exd4 {(e3xd4
Nc6-b4+ Kd3-d2 Nb4-c6 Kd2-c3 Nc6-d8 Bg2-e4 Nd8-f7 Bf2-h4 Kc7-d7 d4-d5
Ne7-c8 Bh4-g3 Nc8-b6 Kc3-b4 Kd7-c7 c4-c5 Nb6-d7 c5-c6 Nd7-f6 Be4-g2 Nf7-e5
Kb4-b5 Ne5-g6 Bg2-f3 Ng6-e5 Bf3-h1 Ne5-g6 Bg3-e1 Ng6-e7 Kb5-c4 Nf6-g4
Be1-a5+ Kc7-b8 Bh1-e4 Ng4-f6 Kc4-d4 Nf6-e8 Be4-f3 Ne8-c7 Ba5-b4 Ne7-f5+
Kd4-e4 Nf5-e7 Bb4xd6 Ne7xd5 Ke4-d4 Nd5-f6 Kd4-c4 Nf6-e8 Bd6-g3 Kb8-a7
Bg3-f2+ Ka7-b8 Kc4-c5 Nc7-a8 Bf3-e2 Na8-c7) +3.25/39 30} Nb4+ {(Nc6-b4+
Kd3-d2 Nb4-c6 Kd2-c3 Nc6-d8 Bg2-e4 Nd8-f7 Bf2-h4 Kc7-d7 d4-d5 Ne7-c8 Bh4-g3
Nc8-b6 Kc3-b4 Kd7-c7 c4-c5 Nb6-d7 c5-c6 Nd7-f6 Be4-g2 Nf7-e5 Kb4-b5 Ne5-g6
Bg2-f3 Ng6-e5 Bf3-h1 Ne5-g6 Bg3-e1 Ng6-e7 Kb5-c4 Ne7-g6 Be1-a5+ Kc7-b8
Kc4-d4 Nf6-e8 Bh1-f3 Ng6-e7 Ba5-b4 Kb8-a7 Kd4-c4 Ka7-b6 Bb4-e1 Kb6-c7
Bf3-h5 Ne8-f6 Be1-a5+ Kc7-b8 Bh5-f3 Nf6-e8 Ba5-d8) -3.31/41 64} 12. Kd2
{(Kd3-d2 Nb4-c6 Kd2-c3 Nc6-d8 Bg2-e4 Nd8-f7 Bf2-h4 Kc7-d7 d4-d5 Ne7-c8
Bh4-g3 Nc8-b6 Kc3-b4 Kd7-c7 c4-c5 Nb6-d7 c5-c6 Nd7-f6 Be4-g2 Nf7-e5 Kb4-b5
Ne5-g6 Bg2-f3 Ng6-e5 Bf3-h1 Ne5-g6 Bg3-e1 Ng6-e7 Kb5-c4 Ne7-f5 Be1-a5+
Kc7-b8 Bh1-f3 Nf5-e3+ Kc4-d4 Ne3-f5+ Kd4-d3 Nf5-e7 Kd3-c4 Nf6-e8 Ba5-d8
Ne7-c8 Bf3-g4 Nc8-a7 Bd8-h4 Na7-c8 Bh4-g3 Kb8-c7 Bg4-e6 Nc8-b6+ Kc4-d4
Ne8-g7 Be6-g4 Ng7-e8 Bg3-h4 Kc7-b8 Bh4-e7 Ne8-c7 Be7xd6 Nb6xd5 Bd6-e5
Nd5-b4 Bg4-d7 Nb4-a6 Kd4-c4) +3.32/42 30} Nbc6 {(Nb4-c6 Kd2-c3 Nc6-d8
Bg2-e4 Nd8-e6 Bf2-h4 Ne7-g8 Be4-f5 Ne6-g7 Bf5-h3 Ng7-h5 Bh3-g4 Nh5-f4
Bh4-g5 Nf4-g6 Bg4-f3 Ng8-e7 Bf3-e4 Kc7-d7 d4-d5 Ng6-e5 Bg5-h4 Ne7-g8 Kc3-d4
Kd7-c7 c4-c5 Ne5-d7 c5-c6 Nd7-e5 Bh4-g3 Ne5-f7 Bg3-e1 Nf7-e5 Be1-a5+ Kc7-b8
Ba5-d2 Kb8-c7 Bd2-f4 Ne5-g4 Be4-f3 Ng8-f6 Bf4-g5 Ng4-e5 Bg5xf6 Ne5xf3+
Kd4-e4 Nf3-g1 Bf6-c3 Ng1-e2 Bc3-a5+ Kc7-b8 Ke4-f5 Ne2-d4+ Kf5-f6 Nd4-e2
Kf6-e7) -3.44/43 56} 13. Kc3 {(Kd2-c3 Nc6-d8 Bg2-e4 Nd8-e6 Bf2-h4 Ne7-g8
Be4-f5 Ne6-g7 Bf5-h3 Ng7-h5 Bh3-g4 Nh5-f4 Bh4-g5 Nf4-g6 Bg4-f3 Ng8-e7
Bf3-e4 Kc7-d7 d4-d5 Ng6-e5 Bg5-h4 Ne7-g8 Kc3-d4 Kd7-c7 c4-c5 Ne5-d7 c5-c6
Nd7-e5 Bh4-g3 Ne5-f7 Bg3-e1 Nf7-e5 Be1-a5+ Kc7-b8 Ba5-d2 Kb8-c7 Bd2-f4
Ne5-f7 Kd4-c4 Ng8-f6 Be4-g2 Nf7-e5+ Kc4-d4 Ne5-f7 Bg2-f3 Nf6-g8 Bf3-h5
Nf7-h6 Bf4-g5 Ng8-e7 Kd4-e4 Nh6-f5 Bh5-g4 Nf5-g3+ Ke4-d4 Ne7-f5+ Bg4xf5
Ng3xf5+ Kd4-e4 Nf5-g3+ Ke4-d3 Ng3-h5) +3.45/42 30} Nd8 {(Nc6-d8 Bg2-e4
Nd8-f7 Bf2-h4 Kc7-d7 d4-d5 Ne7-c8 Bh4-g3 Nc8-b6 Kc3-b4 Kd7-c7 c4-c5 Nb6-d7
c5-c6 Nd7-f6 Be4-g2 Nf7-e5 Bg3-h4 Nf6-e8 Kb4-b5 Kc7-c8 Bh4-g3 Kc8-c7 Bg3-f4
Ne5-g6 Bf4-g5 Ng6-e5 Bg2-e4 Kc7-c8 Bg5-f4 Kc8-c7 Bf4-d2 Kc7-c8 Bd2-c3
Ne8-c7+ Kb5-b4 Nc7-e8 Be4-f5+ Kc8-d8 Bc3-d4 Ne8-f6 Bf5-e6 Nf6-e8 Bd4-b6+
Ne8-c7 Be6-f5 Ne5-f3 Kb4-c4 Nf3-e5+ Kc4-c3) -3.44/44 74} 14. Be4 {(Bg2-e4
Nd8-f7 Bf2-h4 Kc7-d7 d4-d5 Ne7-c8 Bh4-g3 Nc8-b6 Kc3-b4 Kd7-c7 c4-c5 Nb6-d7
c5-c6 Nd7-f6 Be4-g2 Nf7-e5 Bg3-h4 Nf6-e8 Kb4-b5 Kc7-b8 Bh4-g3 Kb8-c7 Bg3-f4
Ne5-g6 Bf4-g5 Ng6-e5 Bg2-e4 Kc7-b8 Bg5-f4 Kb8-c7 Bf4-e3 Kc7-b8 Be3-d4
Ne8-c7+ Kb5-a5 Ne5-g4 Ka5-b6 Nc7-a8+ Kb6-b5 Na8-c7+ Kb5-c4 Nc7-a8 Bd4-c3
Kb8-a7 Be4-f3 Ng4-h6 Bc3-d2 Na8-b6+ Kc4-d3 Nh6-f7 Bd2-f4 Ka7-b8 Kd3-d4
Kb8-c7 Bf3-h5 Nf7-e5 Bf4xe5 d6xe5+ Kd4xe5 Nb6-c4+ Ke5-e6 Nc4-d6 Bh5-f3
Nd6-b5 Bf3-e4 Nb5-d6 Be4-g2 Nd6-b5 Ke6-e5) +3.59/41 35} Nf7 {(Nd8-f7 Bf2-g3
Nf7-g5 Be4-c2 Ng5-e6 Bg3-h4 Ne7-g8 Bc2-f5 Ne6-g7 Bf5-h3 Ng7-h5 Bh3-g4
Nh5-f4 Bh4-g5 Nf4-g6 Bg4-f3 Ng6-f8 Bf3-d5 Nf8-h7 Bg5-f4 Ng8-f6 Bd5-f3
Kc7-d7 c4-c5 Nf6-e8 Kc3-c4 Nh7-f6 Bf3-g2 Nf6-h5 Bg2-h3+ Kd7-d8 Bf4-g5+
Kd8-c7 Bh3-g2 Nh5-f6 Bg5-f4 Nf6-h5 Bf4-h2 Kc7-d7 Bg2-h3+ Kd7-e7 Kc4-b5
d6xc5 d4xc5 Nh5-f6 Bh3-g2 Nf6-g4 Bh2-g3 Ng4-e3 Bg2-h3 Ke7-f7 c5-c6 Ne3-d5
Kb5-c5 Nd5-c7 Bg3-e5 Nc7-a8 Bh3-g2) -3.79/46 185} 15. Bg3 {(Bf2-g3 Nf7-g5
Be4-c2 Ng5-e6 Bg3-h4 Ne7-g8 Bc2-f5 Ne6-g7 Bf5-h3 Ng7-h5 Bh3-g4 Nh5-f4
Bh4-g5 Nf4-g6 Bg4-f3 Ng8-e7 Bf3-e4 Kc7-d7 d4-d5 Ng6-e5 Bg5-h4 Ne5-f7 Bh4-g3
Nf7-g5 Be4-c2 Ng5-f7 Kc3-b4 Nf7-h6 Bc2-e4 Nh6-g8 Bg3-h4 Ng8-h6 Be4-g2
Ne7-g6 Bg2-h3+ Kd7-c7 Bh4-g3 Nh6-f7 c4-c5 Nf7-e5 Bh3-f5 Ng6-e7 Bf5-e4
Ne7xd5+ Be4xd5 Ne5-d3+ Kb4-c4 Nd3xc5 Bd5-g2 Kc7-d7 Kc4-d5 Nc5-b7 Bg2-h3+
Kd7-c7 Bh3-f5 Kc7-b6 Bf5-g4 Kb6-c7 Bg3-f4 Kc7-b6 Bg4-f3 Kb6-c7 Bf3-e4
Kc7-b6 Be4-g2 Kb6-c7 Bg2-f3) +3.93/44 51} Ng5 {(Nf7-g5 Be4-c2 Ng5-e6 Bg3-h4
Ne7-g8 Bc2-f5 Ne6-g7 Bf5-h3 Ng7-h5 Bh3-g4 Nh5-f4 Bh4-g5 Nf4-g6 Bg4-f3
Ng8-e7 Bf3-e4 Kc7-d7 d4-d5 Ng6-e5 Bg5-h4 Ne7-g8 Kc3-d4 Kd7-c7 c4-c5 Ne5-d7
c5xd6+ Kc7xd6 Bh4-g3+ Kd6-e7 Be4-f5 Ng8-f6 d5-d6+ Ke7-f7 Kd4-c4 Nd7-b8
Bg3-f2 Nf6-d7 Bf2-d4 Nd7-f8 Kc4-b5 Nf8-d7 Bd4-c3 Nd7-f6 Bc3-b2 Nf6-d7
Bb2-d4 Kf7-e8 Bf5-g6+ Ke8-d8 Bd4-c3 Kd8-c8 Bg6-d3 Nd7-f8 Bd3-f5+ Kc8-b7
Bc3-f6 Nf8-d7 Bf6-d4 Nd7-f8 Bd4-b6 Nb8-d7 Bb6-e3 Nd7-b8) -4.05/47 98} 16.
Bc2 {(Be4-c2 Ng5-e6 Bg3-h4 Ne7-g8 Bc2-f5 Ne6-g7 Bf5-h3 Ng7-h5 Bh3-g4 Nh5-f4
Bh4-g5 Nf4-g6 Bg4-f3 Ng8-e7 Bf3-e4 Kc7-d7 d4-d5 Ng6-e5 Bg5-h4 Ne7-g8 Kc3-d4
Kd7-c7 c4-c5 Ne5-d7 c5xd6+ Kc7xd6 Bh4-g3+ Kd6-e7 Be4-f5 Ng8-f6 d5-d6+
Ke7-f7 Kd4-c4 Nd7-b8 Bg3-f2 Nf6-d7 Bf2-d4 Nd7-f8 Kc4-b5 Nf8-d7 Bd4-c3
Nd7-f6 Bc3-b2 Nf6-d7 Bb2-d4 Kf7-e8 Bf5-g6+ Ke8-d8 Bd4-c3 Kd8-c8 Bg6-d3
Nd7-f8 Bd3-f5+ Kc8-b7 Bc3-e5 Nf8-d7 Be5-g7 Kb7-c8 Bg7-f6 Kc8-b7 Bf5-e4+
Kb7-c8 Bf6-d4 Kc8-d8 Be4-g6 Nd7-f8 Bg6-f5 Nf8-d7 Bd4-c3 Kd8-e8 Bf5-g6+
Ke8-d8 Bc3-a5+ Kd8-c8 Bg6-f5 Kc8-b7 Ba5-e1) +4.05/49 34} Nf7 {(Ng5-f7
Bc2-d3 Ne7-c8 Bd3-e4 Nc8-e7 Bg3-f4 Nf7-d8 c4-c5 Nd8-f7 d4-d5 Kc7-d7 c5-c6+
Kd7-c7 Kc3-c4 Nf7-e5+ Kc4-b5 Ne5-g4 Bf4-g5 Ng4-f2 Be4-g2 Ne7-c8 Bg5-d2
Nf2-d3 Bd2-a5+ Kc7-b8 Ba5-d8 Nd3-c5 Bg2-f1 Nc8-a7+ Kb5-b4 Na7-c8 Bf1-e2
Nc8-a7 Be2-c4 Na7-c8 Kb4-b5 Kb8-a8 Kb5-a5 Ka8-a7 Bd8-c7 Ka7-a8 Ka5-b4
Nc5-e4 Bc7-a5 Ka8-b8 Bc4-a6 Nc8-e7) -4.12/41 129} 17. Bd3 {(Bc2-d3 Nf7-h6
d4-d5 Nh6-f5 Bg3-f4 Ne7-g6 Bf4-g5 Nf5-e7 Bd3-c2 Kc7-d7 Kc3-b4 Ng6-e5 Bg5-f4
Ne5-f7 Bc2-d3 Kd7-c7 Kb4-b5 Kc7-d7 Bd3-e4 Kd7-d8 Be4-f3 Kd8-c7 c4-c5 Ne7-g6
Bf4-g3 Kc7-d8 Bf3-e4 Ng6-e5 c5-c6 Kd8-c7 Bg3-e1 Nf7-h6 Be1-a5+ Kc7-b8
Ba5-d8 Ne5-f7 Bd8-b6 Nf7-e5 Bb6-d4) +5.02/36 38} Nh6 {(Nf7-h6 d4-d5)
-5.85/36 117} 18. d5 {(d4-d5 Nh6-f7 Kc3-b4 Nf7-d8 Kb4-b5 Ne7-c8 Bd3-f5
Nc8-e7 Bf5-g4 Nd8-b7 Bg3-f2 Ne7-g6 Bf2-d4 Ng6-e7 Bd4-b6+ Kc7-b8 Bg4-d7
Ne7-g6 Kb5-a6 Ng6-e5 Bd7-c6 Ne5xc4 Bb6-a7+ Kb8-c7 Bc6xb7 Nc4-a3 Bb7-c6
Kc7-c8 Ba7-b6 Na3-c4 Bc6-b7+ Kc8-d7 Bb6-d4 Nc4-d2 Bd4-e3 Nd2-e4 Ka6-b6
Kd7-e7) +6.07/33 23} Nhf5 {(Nh6-f5 Bg3-f4) -7.02/34 65} 19. Bf4 {(Bg3-f4
Nf5-g7 Bf4-g5 Kc7-d7 Bd3-e4 Ng7-f5 Be4-f3 Kd7-c7 Bg5-f4 Nf5-h4 Bf3-g4
Nh4-g6 Bf4-g3 Ng6-f8 c4-c5 Kc7-d8 Bg3-h4 Nf8-g6 Bh4-g5 Kd8-c7 Kc3-d4 Ne7-c8
Bg4-f5 Nc8-e7 Bf5-e4 Kc7-d7 Be4-d3 Ng6-e5 Bd3-b5+ Kd7-d8 Kd4-e4 Ne5-f7
Bg5-h4 d6xc5 Bb5-a4 Nf7-d6+ Ke4-e5 Nd6-f5 Bh4-f6 Kd8-c7 Ke5-e6 Ne7-g8
Bf6-e5+ Kc7-b6 Ke6xf5 Ng8-e7+ Kf5-e4 Ne7-c8 d5-d6 Kb6-a5) +7.41/36 40} Kd7
{(Kc7-d7 Bd3-e4) -7.45/33 36} 20. Be4 {(Bd3-e4 Nf5-g7 Bf4-g5 Ne7-f5 Kc3-b4
Nf5-e7 Kb4-b5 Ng7-f5 Be4-d3 Nf5-d4+ Kb5-b6 Ne7-g8 Bd3-f1 Kd7-e8 Kb6-c7
Ke8-f7 Bf1-d3 Nd4-f3 Bg5-f4 Ng8-f6 Bf4xd6 Nf6-e8+ Kc7-d7 Ne8-f6+ Kd7-d8
Nf3-d2 Bd6-e7 Nf6-g8 Be7-b4 Nd2-f3 Bb4-c3 Ng8-f6) +8.23/33 28} Ng7
{(Nf5-g7) -7.61/33 29} 21. Bg5 {(Bf4-g5 Ne7-f5 Kc3-b4 Nf5-e7 Kb4-a5 Ng7-f5
Ka5-b6 Nf5-d4 Bg5-e3 Nd4-e2 Be4-f3 Ne2-c3 Be3-d4 Nc3-b1 Bf3-g4+ Kd7-e8
Kb6-c7 Nb1-d2 Bg4-h5+ Ke8-f8 Kc7xd6 Ne7-f5+ Kd6-e5 Nf5-g3 Bd4-c5+ Kf8-g7
Bh5-g4 Nd2-e4 Bc5-e7 Ne4-f2 Bg4-f5 Kg7-f7 Be7-h4 Ng3xf5 Bh4xf2 Nf5-h6
Bf2-e3 Nh6-g4+ Ke5-d4 Kf7-e7 Be3-g5+ Ke7-d6 c4-c5+ Kd6-c7 Bg5-f4+ Kc7-d8)
+8.69/35 38} Nef5 {(Ne7-f5 Kc3-b4 Nf5-e7 Kb4-a5 Ng7-f5 Be4-c2 Kd7-c7 Bc2-d3
Kc7-b7 Ka5-b5 Kb7-c7 Kb5-a6 Kc7-d7 Ka6-b6 Nf5-d4 Bg5-e3 Nd4-f3 Be3-f4
Nf3-d4 Bd3-f1 Ne7-g6 Bf4-g3 Nd4-f3 Bf1-h3+ Kd7-e7 Kb6-c7 Ke7-f6 Bg3xd6
Nf3-g5 Bh3-g4 Ng6-h4 Bd6-f4 Ng5-f7 Bg4-e6 Nh4-g2 Bf4-d2 Nf7-e5 c4-c5 Ne5-c4
Bd2-c3+ Kf6-e7 d5-d6+ Ke7xe6 d6-d7 Ng2-f4 d7-d8Q Nf4-d5+ Kc7-b7 Nd5xc3
Qd8-g8+ Ke6-e7 Qg8xc4) -9.15/33 29} 22. Kb4 {(Kc3-b4 Nf5-g3 Be4-f3 Ng3-f5
Bf3-g4 Kd7-e8 Bg5-f4 Ke8-e7 Kb4-a5 Ke7-f7 Ka5-b5 Nf5-d4+ Kb5-b6 Kf7-e7
Bf4-h6 Ng7-f5 Bh6-g5+ Ke7-e8 Kb6-c7 Ke8-f7 Bg5-f4 Kf7-e7 Bg4-h3 Ke7-f7
Bf4xd6 Nf5-g7 Kc7-b6 Ng7-e8 Bd6-e5 Nd4-f3 Be5-f4 Ne8-f6 Bh3-e6+ Kf7-g7
c4-c5 Nf6-h5 Bf4-d6 Nh5-f6 c5-c6 Nf6-e8 Bd6-f4 Nf3-d4 Be6-g4 Kg7-g6)
+11.86/33 33} Ng3 {(Nf5-g3 Be4-f3) -13.40/32 30} 23. Bf3 {(Be4-f3 Ng3-f5
Bf3-g4 Kd7-e8 Kb4-b5 Nf5-d4+ Kb5-b6 Ke8-f7 Bg5-f4 Kf7-e7 Bf4-h6 Ng7-e8
Bh6-g5+ Ke7-f7 Bg4-h5+ Kf7-f8 Bg5-f4 Ne8-f6 Bf4xd6+ Kf8-g8 Bh5-g6 Nd4-f3
Bg6-f5 Kg8-g7 Bf5-e6 Nf6-e4 Bd6-f4 Kg7-f6 Be6-g4 Nf3-d2 Bf4xd2 Kf6-e5
Bd2-f4+ Ke5xf4 c4-c5 Ne4-c3 d5-d6 Nc3-a4+ Kb6-c6 Kf4-e3 d6-d7 Na4-b2
d7-d8Q) +13.75/34 28} N3f5 {(Ng3-f5 Bf3-g4) -16.52/31 29} 24. Bg4 {(Bf3-g4
Kd7-e8 Kb4-b5 Nf5-d4+ Kb5-b6 Ke8-f7 Bg5-f4 Kf7-e7 Bf4-h6 Ng7-e8 Bh6-g5+
Ke7-f7 Bg4-h5+ Kf7-f8 Bg5-f4 Ne8-f6 Bf4xd6+ Kf8-g8 Bh5-g6 Nd4-f3 Bg6-f5
Nf3-d2 Bf5-e6+ Kg8-g7 c4-c5 Nd2-c4+ Kb6-b5 Nc4-a3+ Kb5-c6 Nf6-e4 Bd6-e5+
Kg7-h6 d5-d6 Ne4-f2 d6-d7 Nf2-d3 Be5-c3 Nd3-c1 d7-d8Q Kh6-g6 Qd8-g8+ Kg6-h5
Bc3-e5 Na3-c4 Qg8-g4+ Kh5-h6 Qg4xc4) +18.52/33 57} Ke8 {(Kd7-e8 Kb4-b5
Nf5-d4+ Kb5-b6 Ke8-f7 Bg5-f4 Kf7-e7 Bf4-h6 Ng7-e8 Bh6-g5+ Ke7-f7 Bg4-h5+
Kf7-f8 Bg5-f4 Ne8-f6 Bf4xd6+ Kf8-g8 Bh5-g6 Nd4-f3 Bg6-f5 Kg8-g7 Bf5-e6
Nf6-e8 Bd6-f4 Kg7-f6 Be6-g4 Nf3-e5 Bf4xe5+ Kf6xe5 Kb6-c6 Ne8-d6 c4-c5
Nd6-f7 d5-d6 Ke5-d4 d6-d7 Kd4-c3 Kc6-b6 Kc3-b4 c5-c6 Nf7-d6 d7-d8Q)
-24.33/30 21} 25. Kb5 {(Kb4-b5 Nf5-d4+ Kb5-b6 Ke8-f7 Bg5-f4 Kf7-e7 Bf4-h6
Nd4-f5 Bh6-g5+ Ke7-f7 Kb6-c6 Kf7-g6 Bg5-f4 Nf5-d4+ Kc6xd6 Ng7-e8+ Kd6-e5
Nd4-b3 d5-d6 Ne8-f6 Bg4-f5+ Kg6-f7 Bf4-g5 Nf6-h5 Bf5-g4 Nh5-g3 d6-d7 Nb3-a5
Ke5-d5 Kf7-g7 c4-c5 Na5-b7 c5-c6 Kg7-g6 c6xb7) +47.25/32 43} Nd4+
{(Nf5-d4+) -17.92/39 38 Black resigns} *

[/pgn]

[mwyoung]

Is adjusting the pawns to the first rank helping white.

[d]5k2/4pppp/3n2n1/8/8/1B6/1B3PP1/5K2 w - - 0 1

Cfish dev -1.5ish

----

4x8 chess

I suspect this is winning for black

I did not think this would help. As the structure did not change. But I ran this position at long time controls. As I did not want to guess. Black still wins even playing at 60m+30s 32 threads. The knights show what they can do in close quarters combat.

[pgn][Event "Shootout (DragonbyKomodoChess64-bit, Slo"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "0-1"]
[SetUp "1"]
[FEN "5k2/4pppp/3n2n1/8/8/1B6/1B3PP1/5K2 w - - 0 1"]
[PlyCount "160"]

1. g3 {[%eval -203,34] [%emt 0:01:01]} Kg8 {[%eval -186,40] [%emt 0:01:25]} 2.
f4 {[%eval -176,46] [%emt 0:01:04]} Nf8 {[%eval -187,47] [%emt 0:05:53] (h5)}
3. Ke2 {[%eval -185,46] [%emt 0:01:43] (Kg2)} h5 {[%eval -185,48] [%emt 0:01:
33]} 4. Kf3 {[%eval -184,45] [%emt 0:01:02]} Nd7 {[%eval -185,43] [%emt 0:01:
57]} 5. Bc2 {[%eval -186,45] [%emt 0:01:29]} g6 {[%eval -186,44] [%emt 0:02:09]
} 6. g4 {[%eval -186,41] [%emt 0:01:08]} hxg4+ {[%eval -180,43] [%emt 0:02:36]}
7. Kxg4 {[%eval -180,45] [%emt 0:01:11]} Kh7 {[%eval -180,42] [%emt 0:01:26]
(Nc5)} 8. Bb3 {[%eval -180,43] [%emt 0:01:00] (Bd4)} Nc5 {[%eval -180,44]
[%emt 0:02:29]} 9. Ba2 {[%eval -184,44] [%emt 0:00:53]} Na6 {[%eval -180,46]
[%emt 0:02:07]} 10. Ba3 {[%eval -180,46] [%emt 0:01:16]} Kg7 {[%eval -180,48]
[%emt 0:01:46]} 11. Kf3 {[%eval -182,44] [%emt 0:01:23]} Nc7 {[%eval -183,49]
[%emt 0:01:23]} 12. Bb3 {[%eval -183,47] [%emt 0:01:11]} Ncb5 {[%eval -183,47]
[%emt 0:01:24]} 13. Bc5 {[%eval -183,46] [%emt 0:01:08]} Kh6 {[%eval -183,45]
[%emt 0:01:07]} 14. Kg2 {[%eval -183,46] [%emt 0:01:01] (Bd1)} e6 {[%eval -190,
47] [%emt 0:05:44]} 15. Be3 {[%eval -191,43] [%emt 0:01:11]} Kg7 {[%eval -192,
44] [%emt 0:01:18]} 16. Kh3 {[%eval -192,46] [%emt 0:00:59] (Ba4)} Kf6 {
[%eval -193,46] [%emt 0:01:11]} 17. Kg4 {[%eval -194,46] [%emt 0:01:00]} Ke7 {
[%eval -209,44] [%emt 0:04:18]} 18. Bc5 {[%eval -212,43] [%emt 0:01:02] (Ba4)}
f5+ {[%eval -217,41] [%emt 0:01:24]} 19. Kh4 {[%eval -225,44] [%emt 0:04:46]}
Kf7 {[%eval -230,41] [%emt 0:01:30]} 20. Be3 {[%eval -241,40] [%emt 0:01:28]}
Nc3 {[%eval -243,40] [%emt 0:01:17]} 21. Kg3 {[%eval -250,39] [%emt 0:01:35]}
Nde4+ {[%eval -251,40] [%emt 0:01:49]} 22. Kf3 {[%eval -259,38] [%emt 0:02:46]}
Kf6 {[%eval -260,37] [%emt 0:01:07]} 23. Bd4+ {[%eval -265,39] [%emt 0:01:38]}
Ke7 {[%eval -266,39] [%emt 0:01:09]} 24. Bc2 {[%eval -269,39] [%emt 0:02:01]}
Kd6 {[%eval -270,39] [%emt 0:01:32]} 25. Bg7 {[%eval -273,38] [%emt 0:02:09]}
Kc5 {[%eval -270,39] [%emt 0:01:22]} 26. Ke3 {[%eval -273,40] [%emt 0:01:06]}
Nd5+ {[%eval -276,40] [%emt 0:01:34]} 27. Kf3 {[%eval -276,39] [%emt 0:01:15]}
Nd2+ {[%eval -279,42] [%emt 0:01:15]} 28. Ke2 {[%eval -281,41] [%emt 0:01:32]}
Nc4 {[%eval -277,38] [%emt 0:01:07]} 29. Kf3 {[%eval -274,36] [%emt 0:02:21]}
Kb4 {[%eval -278,37] [%emt 0:01:49]} 30. Bd3 {[%eval -281,38] [%emt 0:00:55]}
Nd2+ {[%eval -279,37] [%emt 0:00:56]} 31. Kg3 {[%eval -282,39] [%emt 0:00:52]
(Ke2)} Kc5 {[%eval -282,39] [%emt 0:01:08]} 32. Ba6 {[%eval -288,38] [%emt 0:
01:13]} Kb6 {[%eval -285,38] [%emt 0:03:04]} 33. Bd3 {[%eval -279,35] [%emt 0:
00:46]} Nb4 {[%eval -275,33] [%emt 0:00:55]} 34. Be2 {[%eval -291,33] [%emt 0:
00:47]} Kc6 {[%eval -287,31] [%emt 0:00:55]} 35. Kh2 {[%eval -304,38] [%emt 0:
05:31] (Kf2)} Ne4 {[%eval -308,37] [%emt 0:01:54]} 36. Kg2 {[%eval -308,36]
[%emt 0:00:41]} Nd5 {[%eval -311,35] [%emt 0:00:46]} 37. Be5 {[%eval -335,36]
[%emt 0:01:21]} Kc5 {[%eval -308,34] [%emt 0:00:49]} 38. Kh3 {[%eval -342,38]
[%emt 0:04:35] (Kf3)} Ne7 {[%eval -325,35] [%emt 0:02:09]} 39. Bg7 {[%eval
-448,35] [%emt 0:01:24] (Bb2)} Nc6 {[%eval -470,35] [%emt 0:00:53]} 40. Bf8+ {
[%eval -507,37] [%emt 0:02:06] (Bb2)} Kd5 {[%eval -527,41] [%emt 0:04:15]} 41.
Ba6 {[%eval -552,41] [%emt 0:02:47]} e5 {[%eval -545,38] [%emt 0:00:37]} 42.
fxe5 {[%eval -539,39] [%emt 0:00:45]} Nxe5 {[%eval -564,37] [%emt 0:01:09]} 43.
Bb7+ {[%eval -639,43] [%emt 0:04:29]} Kd4 {[%eval -644,38] [%emt 0:00:42]} 44.
Bg7 {[%eval -684,42] [%emt 0:01:39]} Nd6 {[%eval -737,41] [%emt 0:04:08]} 45.
Ba8 {[%eval -919,40] [%emt 0:02:07] (Bc6)} g5 {[%eval -871,36] [%emt 0:00:38]}
46. Bf8 {[%eval -25000,35] [%emt 0:00:31]} Nec4 {[%eval -1313,35] [%emt 0:00:
28]} 47. Bh6 {[%eval -25000,36] [%emt 0:00:16]} Ne4 {[%eval -1098,32] [%emt 0:
00:15]} 48. Bc6 {[%eval -25000,27] [%emt 0:00:08]} Ne5 {[%eval -1126,37] [%emt
0:00:28]} 49. Bg7 {[%eval -25000,44] [%emt 0:00:06]} Nf2+ {[%eval -25000,47]
[%emt 0:00:04]} 50. Kg2 {[%eval -25000,54] [%emt 0:00:06]} Nfg4 {[%eval -1705,
37] [%emt 0:00:23]} 51. Bb7 {[%eval -25000,45] [%emt 0:00:06]} f4 {[%eval
-25000,30] [%emt 0:00:04]} 52. Bf8 {[%eval -25000,50] [%emt 0:00:07]} Ne3+ {
[%eval -2942,33] [%emt 0:00:17]} 53. Kg1 {[%eval -25000,49] [%emt 0:00:25]} Nf5
{[%eval -25000,53] [%emt 0:00:04]} 54. Bc8 {[%eval -25000,54] [%emt 0:00:08]}
Ke4 {[%eval -25000,54] [%emt 0:00:04]} 55. Bb7+ {[%eval -25000,54] [%emt 0:00:
11] (Bc5)} Ke3 {[%eval -25000,32] [%emt 0:00:05]} 56. Bc8 {[%eval -25000,51]
[%emt 0:00:10]} Nf3+ {[%eval -25000,54] [%emt 0:00:05]} 57. Kg2 {[%eval -25000,
56] [%emt 0:00:26]} g4 {[%eval -25000,48] [%emt 0:00:06]} 58. Kf1 {[%eval
-25000,52] [%emt 0:00:08]} N3h4 {[%eval -25000,54] [%emt 0:00:13]} 59. Bc5+ {
[%eval -25000,56] [%emt 0:01:54] (Ba3)} Kd2 {[%eval -25000,41] [%emt 0:00:06]}
60. Kg1 {[%eval -25000,62] [%emt 0:00:08] (Bb4+)} g3 {[%eval -25000,54] [%emt
0:00:05]} 61. Bb7 {[%eval -25000,61] [%emt 0:01:10]} Ke2 {[%eval -25000,67]
[%emt 0:00:18] (Ke1)} 62. Ba6+ {[%eval -25000,73] [%emt 0:00:08]} Ke1 {[%eval
-25000,74] [%emt 0:00:29]} 63. Bb4+ {[%eval -25000,71] [%emt 0:04:32]} Kd1 {
[%eval -25000,5] [%emt 0:00:00]} 64. Bb7 {[%eval -25000,73] [%emt 0:01:07]} f3
{[%eval -25000,65] [%emt 0:00:08]} 65. Bc5 {[%eval -25000,71] [%emt 0:03:08]}
Ke1 {[%eval -25000,41] [%emt 0:00:07]} 66. Bb4+ {[%eval -25000,75] [%emt 0:00:
05]} Ke2 {[%eval -25000,75] [%emt 0:00:35]} 67. Ba6+ {[%eval -25000,78] [%emt
0:00:13]} Kd1 {[%eval -25000,51] [%emt 0:00:06]} 68. Bc5 {[%eval -25000,79]
[%emt 0:00:34]} Ne3 {[%eval -25000,87] [%emt 0:03:51]} 69. Bxe3 {[%eval -25000,
71] [%emt 0:02:32]} Ke1 {[%eval -25000,73] [%emt 0:01:04]} 70. Kh1 {[%eval
-25000,75] [%emt 0:01:22]} f2 {[%eval -25000,72] [%emt 0:00:05]} 71. Bf4 {
[%eval -25000,81] [%emt 0:00:33]} g2+ {[%eval -25000,71] [%emt 0:00:06]} 72.
Kh2 {[%eval -25000,5] [%emt 0:00:00]} g1=Q+ {[%eval -25000,56] [%emt 0:00:06]}
73. Kh3 {[%eval -25000,5] [%emt 0:00:00]} f1=Q+ {[%eval -25000,67] [%emt 0:00:
06]} 74. Bxf1 {[%eval -25000,99] [%emt 0:00:00]} Kxf1 {[%eval -27998,1] [%emt
0:00:00] (Qh1+)} 75. Kxh4 {[%eval -27994,1] [%emt 0:00:00]} Ke2 {[%eval -27995,
0] [%emt 0:00:00]} 76. Bg5 {[%eval -27995,0] [%emt 0:00:00]} Kd3 {[%eval
-27996,0] [%emt 0:00:00]} 77. Bf4 {[%eval -27996,0] [%emt 0:00:00]} Ke4 {
[%eval -27997,1] [%emt 0:00:00]} 78. Bd6 {[%eval -27997,0] [%emt 0:00:00]} Qg6
{[%eval -27998,1] [%emt 0:00:00]} 79. Bc5 {[%eval -27998,0] [%emt 0:00:00]} Kf3
{[%eval -27999,0] [%emt 0:00:00]} 80. Bb4 {[%eval -27999,0] [%emt 0:00:00]}
Qg4# {[%eval -32765,0] [%emt 0:00:00]} 0-1

[/pgn]

[yurikvelo]

SF13-Dev, 7-men (Partial set) + 6-men (Full), Analysis Contempt=Off, Hash=8 Gb

[d]5k2/4pppp/3n2n1/8/8/1B6/1B3PP1/5K2 w - - 0 1

D=93, 197 502 MN, 3096 MTBHits
-1,74 1.g3 f6 2.Be6 h6 3.Ke2 Ne5 4.f4 Nef7 5.Kf3 g5 6.Ba2 Nb5 7.Bc1 Kg7 8.Bd2 Nbd6 9.Bb4 h5 10.fxg5 fxg5

D=89, 29 432 MN
-1,45 1.g3 f6 2.Bc2 Kf7 3.f4 e6 4.Kf2 Ne7 5.g4 Nc4 6.Bd4 g6 7.Bd3 Nd6 8.Bc5 Ne8 9.Kf3 Ng7 10.Kg3 Nd5

[Nordlandia]

Latest SF Dev show mere -1 for black. Short analysis.

[d]5nnk/5ppp/8/8/8/8/7P/5BBK w - - 0 0

Suprisingly this is considered as big edge -1 plus. Which cast some doubts on the credibility on the BB ~ NNP rule of thumb.

[d]1n2k1n1/pppppppp/8/8/8/8/PPPP1PPP/2B1KB2 w - - 0 0