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ruicoelhopedro / pawn

An experimental UCI chess engine
GNU General Public License v3.0
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contempt is agressive ? #3

Closed tissatussa closed 1 year ago

tissatussa commented 2 years ago

the current Pawn version plays agressive ! it gladly sacrifices pawns and pieces for attack and complications, i like that ! i see Pawn does not go into great depth quickly, but often such sharp continuations require precise calculations ?

i did games in CuteChess against several engines, with 8 minutes per game : 4 games see Pawn_4_agressive_games.zip

sac1 : DeepBrutePos v2.4 (rating?) - Pawn position below

sac1

15...Bxe3 ! and Pawn won. FEN after 15.e3 : r2q1rk1/1b1n1ppp/pb6/1p6/P5n1/1QN1PN2/1PP2PPP/3RKB1R b K - 0 15

sac2 : CaffeinatedPawn f54f165 (rating?) - Pawn position below

sac2

Pawn plays 3...e6! after 11 sec : the Icelandic gambit, agressive! I guess Pawn does not have an internal openingbook .. this gambit is sharp with precise deep variations .. Pawn won the game in great agressive style ! (but the strength of CaffeinatedPawn is unknown to me ..) FEN after 3.c4 : rnbqkb1r/ppp1pppp/5n2/3P4/2P5/8/PP1P1PPP/RNBQKBNR b KQkq - 0 3 FEN after 10.d5 : 2kr3r/ppp1qppp/2n1bn2/3P4/2P5/5N2/PP2QPPP/RN2KB1R b KQ - 0 10

sac3 : Eden v0.0.13 (1405) - Pawn position below

sac3

Pawn let White capture a pawn by Qxb7 and now Pawn plays Nd4! and wins quickly with a nice mate attack. Agressive ! FEN after 9.Qxb7 : r3kb1r/1Qp2ppp/p1n1pn2/3q4/6b1/4PN2/PP1PBPPP/RNB2RK1 b kq - 0 9

sac4 : Flux v2.2.2 (2357) - Pawn position below

sac4

Pawn has expanded the pawns on the Kingside while having castled (!) and now Pawn even plays 16...b5! , leaving no shelter for the King with still many pieces on the board .. however, White can hardly move and Pawn wins nicely. Agressive ! And Flux is rather strong! (however, Flux also can win..) FEN after 16.Qb3 : r3k2r/1p2qp2/p1p2n1p/2bpn1p1/8/1QN1P2P/PPP1BPP1/R1BR2K1 b kq - 0 16

so, Pawn sometimes loses with this agressive strategy : its 'contempt' seems high, and stronger engines resist this 'force' ..?!

here more recent Pawn games (while testing several found java .jar engines) : Pawn_games1.zip times per move are included by CuteChess.

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ruicoelhopedro commented 2 years ago

Thank you for the feedback and the games! Glad the playstyle is exciting :)

Pawn loves mobility and space, and it will gladly sacrifice material to create attacks and complications. But in general, it is too optimistic and ends up blundering a lot (partially because of the lack of depth). It does not feature contempt (yet).