[Comment "auto-generated from http://www.jesseo.com/chesspublishing/pgn.php?pgndata=[Event%20%26quot;Alapin%202...d5%20and%203...Nf6%20analysis%26quot;]%0A[Site%20%26quot;Chesspub%20forum%26quot;]%0A[Date%20%26quot;2017.05.13%26quot;]%0A[Round%20%26quot;?%26quot;]%0A[White%20%26quot;?%26quot;]%0A[Black%20%26quot;?%26quot;]%0A[Result%20%26quot;*%26quot;]%0A[EventDate%20%26quot;2017.05.13%26quot;]%0A%0A1.e4%20c5%202.c3%20d5%203.exd5%20Nf6%204.Qa4+%20Bd7%205.Qb3%20e6%206.Qxb7%20exd5%207.Qxa8%20Qc7%208.Na3%20c4%209.Bxc4%20dxc4%2010.Qf3%20Bxa3%2011.bxa3%20O-O%2012.Ne2%20Bc6%2013.Qf4%20Qxf4%2014.Nxf4%20Re8+%2015.Kf1%20g5%2016.Nh3%20Be4%2017.Bb2%20Bd3+%2018.Kg1%20Re2%2019.Rd1%20h6%2020.f3%20Nbd7%2021.Nf2%20Ne5%2022.a4%20%26%23123;Seemingly%20the%20only%20way%20to%20activate%20the%20b2%20bishop.%26%23125;%20%0A%26nbsp;%20%26nbsp;%20(%2022.Bc1%20g4!%2023.f4%20Ned7!%2024.h4%20Nc5%2025.g3%20Nh5%20%26%23123;With%20bind%20and%20sufficient%20counter%20pressure%20for%20black.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%20(%2022.h4%20g4%2023.fxg4%20Ne4%2024.Nxd3%20Nxd3%2025.Kh2%20Nef2%2026.Bc1%20h5%2027.gxh5%20Re4%2028.Kg3%20Rg4+%2029.Kf3%20Rf4+%2030.Ke2%20Re4+%2031.Kf3%20Rf4+%2032.Ke2%20Re4+%2033.Kf3%20Rf4+%20%26%23123;Threefold%20repetition.%26%23125;%20)%0A22...g4!?%2023.Nxd3%20%0A%26nbsp;%20%26nbsp;%20(%2023.f4%20Ng6%2024.g3%20Bc2%2025.Ra1%20Ne4%2026.Nxg4%20Nxd2%2027.Ba3%20f5%2028.Nf2%20Bxa4%2029.h4%20Bc6%2030.Rh3%20Nf3+%2031.Kf1%20Rc2%2032.h5%20Nd2+%2033.Ke1%20Nf3+%2034.Kf1%20Nd2+%2035.Ke1%20Nf3+%2036.Kf1%20Nd2+%20%26%23123;Threefold%20repetition.%26%23125;%20)%0A23...Nxd3!?%20%26%23123;Spat%20at%20by%20the%20computer.%26%23125;%20%0A%26nbsp;%20%26nbsp;%20(%2023...cxd3%20%26%23123;May%20well%20be%20OK.%20Depends%20on%20how%20to%20evaluate%20a%20couple%20of%20rook%20endgames.%26%23125;%2024.c4%20gxf3%2025.Bxe5%20Ng4%2026.Bg3%20fxg2%2027.c5%20Kf8%2028.c6%20Ke7%2029.Rc1%20Kd8%2030.Rc3%20Ne5%2031.Bxe5%20gxh1%3DR+%2032.Kxh1%20Rxe5%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2032...Re1+!?%2033.Kg2%20Rxe5%2034.Rxd3+%20Kc7%2035.Rd7+%20Kxc6%2036.Rxf7%20Rd5%2037.Rxa7%20Rxd2+%2038.Kg3%20Rxa2%20)%0A%26nbsp;%20%26nbsp;%2033.Rxd3+%20Kc7%2034.Rd7+%20Kxc6%2035.Rxf7%20Ra5%2036.Rf4%20Kd6%20)%0A24.Ba3%20h5!%2025.h4%20Nd5%2026.Kh2%20%0A%26nbsp;%20%26nbsp;%20(%2026.Bd6%20N5f4%2027.Bxf4%20Nxf4%2028.fxg4%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2028.g3%20Rg2+%2029.Kf1%20Rxg3%2030.fxg4%20hxg4%2031.Rb1%20Rf3+%2032.Ke1%20Nd3+%2033.Ke2%20Nf4+%2034.Kd1%20g3%20%26%23123;With%20compensation.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%2028...hxg4%2029.g3%20Rg2+%2030.Kf1%20Rxg3%2031.Rh2%20Nh3%2032.d4%20Rf3+%2033.Kg2%20Nf4+%2034.Kh1%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2034.Kg1%20Nh3+%2035.Kh1%20Nf2+%2036.Rxf2%20Rxf2%2037.d5%20Kf8%20%26%23123;With%20good%20drawing%20chances.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%2034...Nd5%2035.Re1%20f5%20%26%23123;With%20probably%20enough%20compensation.%26%23125;%20)%0A26...gxf3%20%0A%26nbsp;%20%26nbsp;%20(%2026...f5%20)%0A%26nbsp;%20%26nbsp;%20(%2026...N5f4%20)%0A27.Kg3%20Rxg2+%20%0A%26nbsp;%20%26nbsp;%20(%2027...f2%2028.Bd6%20)%0A28.Kxf3%20Rf2+%2029.Ke4%20Nf6+%2030.Ke3%20Rf4%2031.Rdf1%20%0A%26nbsp;%20%26nbsp;%20(%2031.Ra1%20Nd5+%2032.Ke2%20Re4+%2033.Kd1%20Nf2+%2034.Kc2%20Nxh1%2035.Rxh1%20%26%23123;Should%20be%20OK%20for%20black%20thanks%20to%20him%20having%20better%20pieces.%26%23125;%20)%0A31...Re4+%2032.Kf3%20Ne5+%2033.Kg3%20%0A%26nbsp;%20%26nbsp;%20(%2033.Kf2%20Nd3+%2034.Kg3%20Rg4+%2035.Kf3%20Ne4%2036.Ra1%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2036.Rh2%20f5%20)%0A%26nbsp;%20%26nbsp;%2036...Nxd2+%2037.Ke3%20Ne4%2038.Rhg1%20Ng3%20)%0A33...Rg4+%2034.Kh3%20Ne4%2035.Rhg1%20Nxd2%20%0A%26nbsp;%20%26nbsp;%20(%2035...f5%2036.Be7%20Nxd2%2037.Rxf5%20Rxg1%2038.Rxe5%20)%0A36.Rd1%20%0A%26nbsp;%20%26nbsp;%20(%2036.Bc5%20Nxf1%2037.Rxf1%20Nd3%2038.Bxa7%20Nf4+%2039.Kh2%20Rxh4+%2040.Kg3%20Rg4+%2041.Kf3%20Nd5%2042.Bd4%20%0A%26nbsp;%20%26nbsp;%26nbsp;%20%26nbsp;%26nbsp;%20(%2042.a5%20Rf4+%2043.Kg2%20Rg4+%2044.Kf2%20Rf4+%2045.Ke1%20Rxf1+%2046.Kxf1%20Kf8%2047.Bd4%20%26%23123;Transposes.%26%23125;%20)%0A%26nbsp;%20%26nbsp;%2042...Rf4+%2043.Ke2%20Rxf1%2044.Kxf1%20Kf8%2045.a5%20Ke7%2046.a6%20Kd6%2047.a7%20Nc7%2048.Kg2%20Kc6%2049.Kh3%20Kb7%2050.Kh4%20Nb5%2051.Be5%20Nxc3%2052.Bxc3%20Kxa7%20%26%23123;With%20an%20eventual%20draw.%26%23125;%20)%0A36...Nd3%2037.Rxg4+%20hxg4+%2038.Kh2%20Ne4%20%26%23123;With%20hard%20to%20assess%20compensation.%26%23125;%20*"]
[Event "Alapin 2...d5 and 3...Nf6 analysis"]
[Site "Chesspub forum"]
[Date "2017.05.13"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[EventDate "2017.05.13"]

1.e4 c5 2.c3 d5 3.exd5 Nf6 4.Qa4+ Bd7 5.Qb3 e6 6.Qxb7 exd5 7.Qxa8 Qc7 8.Na3 c4 9.Bxc4 dxc4 10.Qf3 Bxa3 11.bxa3 O-O 12.Ne2 Bc6 13.Qf4 Qxf4 14.Nxf4 Re8+ 15.Kf1 g5 16.Nh3 Be4 17.Bb2 Bd3+ 18.Kg1 Re2 19.Rd1 h6 20.f3 Nbd7 21.Nf2 Ne5 22.a4 {Seemingly the only way to activate the b2 bishop.} 
    ( 22.Bc1 g4! 23.f4 Ned7! 24.h4 Nc5 25.g3 Nh5 {With bind and sufficient counter pressure for black.} )
    ( 22.h4 g4 23.fxg4 Ne4 24.Nxd3 Nxd3 25.Kh2 Nef2 26.Bc1 h5 27.gxh5 Re4 28.Kg3 Rg4+ 29.Kf3 Rf4+ 30.Ke2 Re4+ 31.Kf3 Rf4+ 32.Ke2 Re4+ 33.Kf3 Rf4+ {Threefold repetition.} )
22...g4!? 23.Nxd3 
    ( 23.f4 Ng6 24.g3 Bc2 25.Ra1 Ne4 26.Nxg4 Nxd2 27.Ba3 f5 28.Nf2 Bxa4 29.h4 Bc6 30.Rh3 Nf3+ 31.Kf1 Rc2 32.h5 Nd2+ 33.Ke1 Nf3+ 34.Kf1 Nd2+ 35.Ke1 Nf3+ 36.Kf1 Nd2+ {Threefold repetition.} )
23...Nxd3!? {Spat at by the computer.} 
    ( 23...cxd3 {May well be OK. Depends on how to evaluate a couple of rook endgames.} 24.c4 gxf3 25.Bxe5 Ng4 26.Bg3 fxg2 27.c5 Kf8 28.c6 Ke7 29.Rc1 Kd8 30.Rc3 Ne5 31.Bxe5 gxh1=R+ 32.Kxh1 Rxe5 
        ( 32...Re1+!? 33.Kg2 Rxe5 34.Rxd3+ Kc7 35.Rd7+ Kxc6 36.Rxf7 Rd5 37.Rxa7 Rxd2+ 38.Kg3 Rxa2 )
    33.Rxd3+ Kc7 34.Rd7+ Kxc6 35.Rxf7 Ra5 36.Rf4 Kd6 )
24.Ba3 h5! 25.h4 Nd5 26.Kh2 
    ( 26.Bd6 N5f4 27.Bxf4 Nxf4 28.fxg4 
        ( 28.g3 Rg2+ 29.Kf1 Rxg3 30.fxg4 hxg4 31.Rb1 Rf3+ 32.Ke1 Nd3+ 33.Ke2 Nf4+ 34.Kd1 g3 {With compensation.} )
    28...hxg4 29.g3 Rg2+ 30.Kf1 Rxg3 31.Rh2 Nh3 32.d4 Rf3+ 33.Kg2 Nf4+ 34.Kh1 
        ( 34.Kg1 Nh3+ 35.Kh1 Nf2+ 36.Rxf2 Rxf2 37.d5 Kf8 {With good drawing chances.} )
    34...Nd5 35.Re1 f5 {With probably enough compensation.} )
26...gxf3 
    ( 26...f5 )
    ( 26...N5f4 )
27.Kg3 Rxg2+ 
    ( 27...f2 28.Bd6 )
28.Kxf3 Rf2+ 29.Ke4 Nf6+ 30.Ke3 Rf4 31.Rdf1 
    ( 31.Ra1 Nd5+ 32.Ke2 Re4+ 33.Kd1 Nf2+ 34.Kc2 Nxh1 35.Rxh1 {Should be OK for black thanks to him having better pieces.} )
31...Re4+ 32.Kf3 Ne5+ 33.Kg3 
    ( 33.Kf2 Nd3+ 34.Kg3 Rg4+ 35.Kf3 Ne4 36.Ra1 
        ( 36.Rh2 f5 )
    36...Nxd2+ 37.Ke3 Ne4 38.Rhg1 Ng3 )
33...Rg4+ 34.Kh3 Ne4 35.Rhg1 Nxd2 
    ( 35...f5 36.Be7 Nxd2 37.Rxf5 Rxg1 38.Rxe5 )
36.Rd1 
    ( 36.Bc5 Nxf1 37.Rxf1 Nd3 38.Bxa7 Nf4+ 39.Kh2 Rxh4+ 40.Kg3 Rg4+ 41.Kf3 Nd5 42.Bd4 
        ( 42.a5 Rf4+ 43.Kg2 Rg4+ 44.Kf2 Rf4+ 45.Ke1 Rxf1+ 46.Kxf1 Kf8 47.Bd4 {Transposes.} )
    42...Rf4+ 43.Ke2 Rxf1 44.Kxf1 Kf8 45.a5 Ke7 46.a6 Kd6 47.a7 Nc7 48.Kg2 Kc6 49.Kh3 Kb7 50.Kh4 Nb5 51.Be5 Nxc3 52.Bxc3 Kxa7 {With an eventual draw.} )
36...Nd3 37.Rxg4+ hxg4+ 38.Kh2 Ne4 {With hard to assess compensation.} *