Tuesday, April 1, 2008

Study 38

Árpád Rusz
- original -
Win
.
1.Nf6! mutual zugzwang [Thematic try: 1.Ng5? Kd6! 2.Ne4+ Kc6! mutual zugzwang 3.Nf6 Kc7 4.Ne4 Kc6 5.Nc3 Kc7 6.Nd1 Kc6 7.Ne3 Kc7 positional draw - blockade] 1...Kc6 [1...Kd6 2.Kb6 Ke5 3.Kxb7!+-] 2.Ne4 mutual zugzwang 2...Kd5 3.Nc5 Kc6 [3...Kc4 4.Nxb7+-] 4.Nd3 mutual zugzwang 4...Kd5 5.Kb6 Kc4 6.Kxb7 Kxd3 7.Kxa6 Kc4 8.Ka5 mutual zugzwang +-
.

Study 38c

V.Evreinov
Leninska Smena
(1976)
1st HM
Draw
.
1.e7 [1.Ne7? f2 2.Bxf2 gxf2 3.Kh2 f1N+ 4.Kg1 Ng3-+] 1...Re5 2.e8Q Rxe8 3.Ne7 Rxe7 4.Bd8 f2 5.Bxe7+ g5 6.Bc5 f1Q+ 7.Bg1 Qf2 8.Bxf2 gxf2 9.Kh2 f1N+ 10.Kg1 Nd2 11.Kf2 Nc4 12.Kf3 Nd6 13.Kf2 positional draw - blockade
.

Study 38b

J.Hasek
Práce
(1951)
1st HM
Draw
.
1.Ng5! hxg5 2.Bxa7 d1Q+ 3.Bg1 Qe2 4.Ba7 Qf1+ 5.Bg1 Qf2! 6.Bxf2 gxf2 7.Kh2 f1N+ 8.Kg1 Nd2 9.Kf2 Nc4 10.Kf3 Nd6 11.Kf2 positional draw - blockade
.

Study 38a

J.Drewitt
The Chess Amateur
(1917)
Draw(cooked!)
.
1.Bd2 Re2 2.Bc3 Rc2 3.Bd4 Rf2 4.Ba7 [dual 4.Bxf2!= ] 4...Rf1+ 5.Bg1 Rf2! 6.Bxf2 gxf2 7.Kh2 f1N+ 8.Kg1 Nd2 9.Kf2 Ne4+ 10.Kf3 [10.Ke3? Kg3! 11.Kxe4 Kxg2–+] 10...Nc5 11.Kf2 Nd3+ 12.Kf3 positional draw - blockade
.

Study 34b

V.Kovalenko
64-Shakmatnoe Obozrenie
(2004)
Win(cooked!)
.
1.e5 Be3! 2.g6 Bd2+ 3.b4 Bh6 4.e6 Bf8! 5.e7! [dual 5.g7! Bxg7 6.e7 Be5 7.e8R+! Bb8 8.Re3 Bd6 9.Rc3 Be5 (9...Kb8 10.Rd3+-) 10.Rc8+ Bb8 11.Rc7! Bxc7 12.bxc7 Ka7 13.c8N++-] 5...Bxe7! 6.g7 Bd6 7.g8R+! [7.g8Q+? Bb8 8.Qxg4 Bxg3! 9.Qc8+ (9.Qxg3 stalemate) 9...Bb8 10.Qc7 Bxc7 11.bxc7 Ka7! 12.c8N+ Kb8 13.Ne7 Kc7! 14.Nd5+ Kc6 15.Ne7+ Kc7 positional draw] 7...Bb8 8.Rxg4 +-
.

Study 34a

P.Faragó
L'Italia Schacchistica
(1932)
Win
.
1.e7 Bc3+! 2.b4 Be5! 3.e8R+!! Bb8 4.Re2 Bd6 5.Rc2 Be5 6.Rc8+ Bb8 7.Rc7! Bxc7 8.bxc7 Ka7 9.c8N+! +-
.

Monday, March 24, 2008

Studies with Indian Theme

Indian 1 Indian 2 Indian 3 Indian 4 Indian 5 Indian 6 Indian 7 Indian 8 Indian 9 Indian 10
Download Indian.pgn (126 studies)
.
A book scanned by Siegfried Hornecker: Kohtz und Kockelkorn-Das Indische Problem.pdf

Study 37 + Indian 10

Árpád Rusz
- original -
Win
.
1.Bf3! [1.Bd5? f3!=] 1...g2+ [1...h2 2.Bd5! f3 3.Bxa2! Kxa2 4.Rd5! Kb2 5.Rd3! f2 6.Rd1+-] 2.Kh2! g1Q+ 3.Kxg1 h2+ 4.Kf1! [4.Kxh2? stalemate] 4...h1Q+ 5.Bxh1 f3 6.Rb8! mutual zugzwang 6...f2 7.Bb7! Indian 7...Kb2 8.Bd5+ +-

Indian 9

A.Kopnin
Druzji Ty
(1979)
1st Pr.
Win
.
1.Rd1+ Bc1 2.Bc6
a.2...Nxd4 3.Be4+ Nc2 4.Bh7! c6 5.Kg6! Indian 5...Nb4 6.Kf6+ Nc2 7.Kf5 Nb4 8.Ke5+ Nc2 9.Ke4 Nb4 10.Kd4+ Nc2+ 11.Kd3 Ne1+ 12.Ke2+ Nc2 13.Rd3 +-
b.2...Nb4 3.Be4+ Nc2 4.Rh1! c6 5.Bg1! Indian 5...Bd2 6.Bf2+ Bc1 7.Be1+-

Indian 8

V.Tjavlovski
Shakhmaty v SSSR
(1966)
1st HM
Win
.
1.Kc3
a.1...d5 2.Nf7 g3 3.Ne5 [minor dual 3.Ng5 ] 3...g2 4.Nf3 d4+ 5.Kc2 Ka1 6.Kb3 a2 7.Ka3 g1Q 8.Nxg1 d3 9.Kb3 d2 10.Bc2 d1Q 11.Bxd1 Kb1 12.Ne2 a1Q 13.Bc2#
b.1...g3 2.Be4 g2 3.Bxg2 d5 4.Bxd5+ Kb1 5.Be4+ Ka1 6.Bh7! a2 7.Ng6! Indian 7...Kb1 8.Nf4+ [minor dual 8.Ne5+ ] 8...Ka1 9.Nd3+-

Indian 7

V.Bron
Lelo
(1962)
5th HM
Win
.
1.Kf3 g2! 2.Ra1!! bxa4 3.Bb7 d3! [3...dxc3 4.Bc8 c2 5.Bh3 c1Q 6.Bxg2#] 4.Ba6! d2 5.Be2 d1Q 6.Bxd1 Bxf2 7.Bc2+ Bg1 [7...g1Q 8.Be4! Qe1! 9.Rxe1+ Bxe1 10.Ke2+ Kg1 11.Kxe1+-; 7...g1N+ 8.Kg4! Kg2 9.Be4++-] 8.Bb1! Indian 8...Be3 9.Be4+ Bg1 10.Rf1 gxf1Q+ 11.Kg3+ Qg2+ 12.Bxg2#

Indian 6

T.Kok
Tijdschrift v.d. KNSB
(1941)
1st Pr.
Win
.
1.Ra4+ Kb1 2.Kd2 Bg5+ 3.Kd1 Bc1! Kling 4.Ra8! d2 5.Na7! Indian [5.Nb6? stalemate with blocked B] 5...Ka2 6.Nb5+ Kb3 7.Na3 +-

Indian 5

V.Bron
Shakhmaty v SSSR
(1940)
sp.HM
Win
.
1.Bf3 d2+ 2.Kd1 Qe4 3.Bxe4 fxe4 4.Rg8! h3 5.Bg7! Indian 5...Kg2 6.Be5+ Kh1 7.Bg3! Kg2 8.Bf4+ Kh1 9.Bg5! Kg2 10.Bxe3+ Kf1 11.Rf8+ Kg2 12.Rf2+ Kg3 13.Rxh2 +-

Indian 4

A.Kakovin
Shakhist
(1938)
Win
.
1.Bb8! h4 2.Kc7 Kg1 3.Ba7+ Kg2 4.Kb6! Indian 4...Kg1 5.Kb5+ Kg2 6.Kc5 Kg1 7.Kc4+ Kg2 8.Kd4 Kg1 9.Kd3+ Kg2 10.Ke3 Kg1 11.Ke2+ Kg2 12.Bf2! gxf2 13.Rg8#

Indian 3

L.Salkind
64
(1928)
1st Pr.
Win
.
1.Bd2! b2 [1...Kb2 2.Bc3+ Kc1 3.Bc4+-] 2.Bh7!! b1Q 3.Bc3+ Qb2 4.Ng6! Indian 4...Kb1 [4...Qxc3+ 5.Kxc3 Kb1 6.Nf4+ (6.Ne5+) 6...Ka1 7.Nd3+-] 5.Ne5+ [5.Nf4+? Qc2 6.Bxc2+ Kxc2=] 5...Ka1 [5...Qc2 6.Bxc2+ Kxc2 7.Nc4 Kb1 8.Na3++-] 6.Nd3 Qxc3+ 7.Kxc3 +-

Indian 2

J.Behting
Latvia Ty
(1927)
Win
.
1.Rf1! g3 2.Nf5 Kg2 3.Ne3+ Kh1 4.Rc1! Switchback 4...g2 5.Nd1! Indian 5...Ne2 6.Nf2#

Indian 1

A.Troitzky
Deutsche Schachzeitung
(1909)
Win
.
1.Nc2+ Kb1 2.Na3+ Ka1 3.Bh6! a4 4.Ke7! Nd3 5.Bg7+ Nb2 6.Kf6! Indian 6...Nd3 7.Kf5+ [minor dual 7.Ke6+ ] 7...Nb2 8.Ke5 Nd3+ 9.Ke4+ [minor dual 9.Kd5+ ] 9...Nb2 10.Kd4 Nd1 11.Kd3+ [minor dual 11.Kc4+ ] 11...Nb2+ 12.Kc3 +-

Thursday, March 13, 2008

Studies with Nowotny Theme

Some selected studies with Nowotny:
Nowotny 1 Nowotny 2 Nowotny 3 Nowotny 4 Nowotny 5 Nowotny 6 Nowotny 7 Nowotny 8 Nowotny 9 Nowotny 10 Nowotny 11 Nowotny 12 Nowotny 13 Nowotny 14 Nowotny 15 Nowotny 16 Nowotny 17 Nowotny 18
Download Nowotny1.pgn (398 studies)

Nowotny 18

E.Dobrescu
Shakhmaty v SSSR
(1982)
1/2.Pr.
- correction -
Draw(BTM)
.
1...Nc5+ 2.Kd2 Rb2+ 3.Kc1 [3.Kd1? Be3 4.Rh7+ Kg6 5.Rg7+ Kh6–+] 3...Rc2+ 4.Kb1 Ne4 5.Rh7+ [5.c8Q? Nd2+–+] 5...Kg6 6.Rg7+! [6.Rd7? Bd4!–+ Nowotny] 6...Kh5 7.Rh7+ Kg6 8.Rg7+ Kh6 9.Rd7 Bd4! Nowotny 10.Bf4+ Kh5 [10...Kg6 11.Rd6+ Kf7 12.Rd7+ Ke6 13.Rd6+ Nxd6 14.Bxd6 Kd7 15.cxd4=] 11.Rh7+ Kg6 12.Rh6+! [12.Rh3? Be3! Nowotny 13.Rg3+ Kf7!–+] 12...Kf7 13.Rh7+ Kg6 14.Rh6+ Kg7 15.Rh3 Be3! Nowotny 16.Be5+ Kf7 17.Rh7+ Kg6 18.Rg7+ Kh5 19.Rh7+ Kg6 20.Rg7+ Kh6 21.Rd7 Bd4! 22.Bf4+ positional draw - perpetual Nowotny

Nowotny 17

P.Benkő
Magyar Sakkélet
(1977)
1st Pr.
Win
.
1.e7! [1.g7? Rg3! (1...Rd8? 2.Rd6! Rg8 3.Rxd1 Rxg7 4.Rd7+ Rxd7 5.exd7+-) 2.e7 Bh5 3.Rg6! Nowotny 3...Rxg6! (3...Bxg6? 4.Kf2+-) 4.e8Q Rf6+ 5.Ke1 (5.Kg1 Bxe8 6.g8Q Rg6+=) 5...Bxe8 6.g8Q echo 6...Bd7! 7.Qd5 (7.Qd8 Re6+ 8.Kf2 Bc6 9.Qc7+ Bb7=) 7...Re6+ 8.Kd2 Bc8=; 1.Rc7+? Kb6=] 1...Re3 2.g7 Bb3 3.Rc7+! [3.Re6? Nowotny 3...Rxe6! (3...Bxe6? 4.Kf2+-; or 3...Bc4+ 4.Kf2 Rxe6) 4.g8Q Bc4+! 5.Kf2 Re2+ 6.Kf3 Bxg8=] 3...Ka6 [3...Kb6 4.Rc3!+-] 4.Kf2! Re4 5.Rc6+ [5.Kf3?! Re1 6.Kf4? Kb6 7.Rc3 Bf7=] 5...Ka5 [5...Kb5 6.Re6! Nowotny (6.Rc3? Bf7! 7.Re3 Rg4 8.Rg3 Re4 9.Re3 Rg4) 6...Rxe6 (6...Bxe6 7.e8Q++-) 7.g8Q+-] 6.Re6! Nowotny 6...Rxe6 [6...Bxe6 7.e8Q+-] 7.g8Q Rf6+ 8.Kg1! [8.Ke3? Bxg8 9.e8Q Re6+=; 8.Kg3? Bxg8 9.e8Q Rf1! 10.Kg2 Bc4=; 8.Kg2? Bxg8 9.e8Q Bd5+=] 8...Bxg8 9.e8Q +- echo

Nowotny 16a

G.Kasparian
Shakhmaty v SSSR
(1959)
1st Pr.
Draw(cooked!)
.
1.c7 Re4+! [1...Rc4 2.Bc5 Rxc5 3.e7 Re5+ 4.Kd2=] 2.Kd2! [dual 2.Kf3! Rc4 3.Nd2! a1Q 4.Nxc4! Qd1+ 5.Kxg2 Qg4+ 6.Kh1 Be4+ 7.f3 Bxf3+ 8.Nxf3 Qxf3+ 9.Kxg1=] 2...Rc4 3.Bc5! Rc2+! [3...Rxc5 4.e7=] 4.Kd1! Rxc5 5.e7 Bc2+ 6.Kd2!! [6.Ke2? Ba4 7.Rc6! Bb5+! 8.Kd2 Rd5+–+] 6...Ba4 7.Rc6! Nowotny 7...Rd5+ 8.Ke2 [8.Ke3? Bxf2+!–+] 8...Bd1+ 9.Ke3 [minor dual 9.Ke1 ] 9...Re5+ 10.Kd2 Bg4 11.Re6! Nowotny 11...Rd5+ 12.Kc2! [12.Ke3? Bxf2+ 13.Kf4 Rd4+–+] 12...Bd1+ 13.Kc1 Rc5+ 14.Kd2 Ba4 15.Rc6! Nowotny 15...Rd5+ 16.Ke2 positional draw - perpetual Nowotny

Wednesday, March 12, 2008

Nowotny 16

G.Kasparian
Shakhmaty v SSSR
(1959)
1st Pr.
- correction by A.Rusz (2008) -
Draw
.
1.c7 Rc4 2.Bc5! Rc2+! [2...Rxc5 3.e7=] 3.Kd1! Rxc5 4.e7 Bc2+ 5.Kd2! [5.Ke2? Ba4 6.Rc6! Bb5+! 7.Kd2 Rd5+–+] 5...Ba4 6.Rc6! Nowotny 6...Rd5+ 7.Ke2 [7.Ke3? Bxf2+!–+] 7...Bd1+ 8.Ke3 [minor dual 8.Ke1 ] 8...Re5+ 9.Kd2 Bg4 10.Re6! Nowotny 10...Rd5+ 11.Kc2! [11.Ke3? Bxf2+ 12.Kf4 Rd4+–+] 11...Bd1+ 12.Kc1 Rc5+ 13.Kd2 Ba4 14.Rc6! Nowotny 14...Rd5+ 15.Ke2 positional draw - perpetual Nowotny

Nowotny 15

L.Zoltán
Magyar Sakkélet
(1958)
1st Pr.
Win
.
1.c7 [1.e7? Re5=] 1...Rc5 2.e7 Bb5 3.Rc6! Nowotny 3...Re5+ [3...Nd3+ 4.Kf1 Nc1+ 5.d3! g2+! 6.Kf2! Nxd3+ 7.Kg1+-] 4.Kd1 Be2+ [4...Ba4+ 5.b3!+-] 5.Kxc1 [5.Kc2? Bg4! (5...Bd3+? 6.Kc3 Bf5 7.Re6! Rc5+ 8.Kb4 Nd3+ 9.Ka4 Nxb2+ 10.Ka3 Nc4+ 11.Kb4+-) 6.c8Q+ Bxc8 7.Rxc8+ Kg7 8.Rc7 Kg8 (8...Kh8) 9.Rc8+ Kg7 positional draw] 5...Bg4 6.Re6! Nowotny 6...Rc5+ 7.Kb1 Bf5+ 8.d3! Bxd3+ 9.Ka2 Bb5 10.Rc6! Nowotny 10...Bxc6 [10...Rxc6 11.e8Q++-] 11.c8Q+ +-

Nowotny 14

A.Kazantsev
Tschigorin MT
(1949)
1st Pr.
Draw
.
1.Nc2 Bg7 2.c7 Rc6 3.a7 Rxc2 4.Bd2 a2 5.a8Q a1Q+ 6.Qxa1 Bxa1 7.c8Q+ Rxc8 8.Bc3! Nowotny 8...Rb8 [8...Bxc3 9.g7 Bxg7 10.h8Q+ Bxh8 stalemate] 9.Bb2! Nowotny [9.h8Q+? Rxh8 10.Bxh8 f3! 11.Bd4 Bxd4 12.g7 f2–+] 9...Re8 10.Be5! Nowotny 10...Rd8 11.Bd4! positional draw - perpetual Nowotny

Nowotny 13

M.Gohn
Revista de Romana de Sah
(1947)
1st Pr.
Win
.
1.f3+ Kg5 2.c7! Rc5 3.e7 Ba4 4.Nd4 Rc1 [4...Rxc7 5.Ne6+ Kf5 6.Nxc7+-] 5.Nc6! Nowotny 5...Bxc6 [5...Rxc6 6.e8Q+-] 6.c8Q +-
.
.....1...Kh4 2.e7 Re5 3.c7 Bf5 4.Nxf4 Re1 [4...Rxe7 5.Nxg6++-] 5.Ne6! Nowotny [5.g4? Rxe7 6.Nxg6+ Bxg6 7.c8Q Re2+=] 5...Rxe6 [5...Bxe6 6.e8Q+-] 6.c8Q+-

Nowotny 12

K.Arnstam
Schackvärlden
(1941)
3rd comm.
Win
.
1.e7 Re3 [1...Ba4 2.dxc7 Rc3 3.Nc6! Nowotny 3...Bxc6 (3...Rxc6 4.e8Q++-) 4.c8Q+-] 2.dxc7 Bg4 3.Ne6! Nowotny 3...Rxe6 [3...Bxe6 4.e8Q++-] 4.c8Q Rxe7 5.Qc5+ +-

Nowotny 11

G. Van Altena
De Schaakwereld
(1940)
Win
.
1.Rb8 d2 2.Ba4 Bb3! Nowotny 3.Bxb3! b1Q 4.Bd5+ Kh2! 5.Rh8+! [5.Rxb1? d1Q+ 6.Rxd1 stalemate] 5...Kg1 6.Rh1+ Kf2 7.Rxb1 +-

Nowotny 10

A.Shapovalov
WLKSM-20 JT
(1938)
2nd Pr.
Win



Nowotny 9

T.Kok
Avondpost
(1935)
Win
.
1.Nc3! Nowotny 1...Rxc3 [1...Bxc3 2.Nc5+!+-] 2.Ne5+! Ke2 3.h7 Rxc7 4.h8Q +-

Nowotny 8

M.Liburkin
64
(1935)
Draw
.
1.h8Q Bb2+ 2.Kc5 Rg5+ 3.Be5! Nowotny 3...Rxe5+ 4.Kb4 Re4+ 5.d4! Nowotny 5...Rxd4+ 6.Qxd4 Bxd4 stalemate

Nowotny 7

A.Troitzky
64
(1934)
3.Pr
Win
.
1.a7 Bc4+ 2.Ka1! Bd5 3.Nf6 Ra4+ critical move 4.Kb2 Bxg2 critical move 5.Ne4! Nowotny 5...Bxe4 [5...Rxe4 6.a8Q++-] 6.h7 Bxh7 7.a8Q+ +-

Nowotny 6

Z.Birnov
64
(1929)
Draw
.
1.f7 Rf4 2.d7 Bh4 3.Nf6! Nowotny [3.Kxa6? Kd5 4.Kb7 Rxf7 5.Kc8 Rf8 6.d8Q+ Bxd8 7.Kxd8 Ke6–+] 3...Rxf6 4.d8Q Rxf7+ 5.Kxa6 Bxd8 stalemate

Nowotny 5

A.Guljajev
Magyar Sakkvilág
(1926)
Win
.
1.f7 Ba3 2.h6 Ra6 [2...Ra5 3.Bc5! Nowotny 3...Bxc5 (3...Rxc5 4.f8Q++-) 4.h7+-; 2...Rc4 3.Bc5! Nowotny 3...Bxc5 (3...Rxc5 4.f8Q++-) 4.h7+-] 3.Bg3+ Ke4 4.Bd6! Nowotny 4...Bxd6 [4...Rxd6 5.f8Q+-] 5.h7+-

Tuesday, March 11, 2008

Nowotny 4

F.Sackmann
Deutsche Schachblätter
(1910)
Win
.
1.d7 Rd3 2.Nd4! Nowotny 2...Rxd4 [2...Bxd4 3.d8Q++-] 3.a7 Bg2! 4.Nd5! Nowotny 4...Rxd5 [4...Bxd5 5.d8Q++-] 5.a8Q+ +-

Nowotny 3

F.Sackmann
Deutsche Nachrichten
(1910)
Win
.
1.a7 Bf3 2.Ne4! Nowotny [2.dxc7? Re8=] 2...Bxe4 [2...Rxe4 3.a8Q++-] 3.dxc7 Rc1 4.Nc6! Nowotny 4...Bxc6 [4...Rxc6 5.a8Q++-] 5.c8Q+ +-

Nowotny 2

C.Behting
Deutsches Wochenschach
(1908)
Win
.
1.Rh3!! Rxh3 critical move [1...Ra4 2.Nb3#] 2.f3! [2.Bd3? Rh1+–+] 2...Rxf3 3.Bd3! Nowotny 3...Rxd3 [3...Bxd3 4.Nb3#] 4.Nc2#

Nowotny 1

H.Rinck
Deutsche Schachzeitung
(1906)
Win
.
1.a7 Bg2 2.d7 Rd2 3.Bd5! Nowotny 3...Rxd5 [3...Bxd5 4.d8Q+-] 4.a8Q +-

Study 36a

I.Monastirskii
64-Shakmatnoe Obozrenie
(2000)
Win(cooked!)
.
1.e7 with duals 1...Re3 2.Be5! Nowotny [dual 2.Bc5!+- ] 2...Bxe5 3.e8N! Rh3 4.f6 Rxh5 5.f7 Rf5 6.Nf6! Nowotny 6...Rxf6 [6...Bxf6 7.f8Q+-] 7.h8Q Rb6+ 8.Ka4 Bxh8 9.f8Q +- [but 9.f8Q Rc6!? 10.Qxh8 Rxc4+ =]

Study 36

Árpád Rusz
- original -
after I.Monastirskii
Win
.
1.Ne5! Nowotny [1.h8Q? Bxh8 2.Nxh8 Rxe7 3.f6 Rh7=] 1...Bxe5 2.e8N! Phoenix [2.e8Q? Bd6+–+] 2...Rh3 [2...Bh8 3.Nc7+ Ka5 4.b4+ Kb6 5.Nd5++-] 3.f6 Rxh5 4.f7 Rf5 5.Nf6! Nowotny 5...Bxf6 [5...Rxf6 6.h8Q+-] 6.f8Q +-

Study 35

Árpád Rusz
Оlimpiya Dunyasi
(2008)
Win
.
1.Rf8 Ne7 2.Rxf5+! [2.c8Q?? Na6#] 2...c5 [2...Ka4 3.Rf4+-; 2...Kb6 3.c8N+!+-] 3.Rxc5+! Kxc5 4.c8Q+ Nbc6+ 5.Qxc6+! [5.Kc7? Nd5+ 6.Kd7 Nf6+ 7.Kc7 Nd5+ perpetual check] 5...Kxc6 6.c3!! mutual zugzwang [6.c4? Kd6 (6...Kb6) 7.c5+ Kc6 stalemate] 6...Kd6 7.c4 Nc6+ [7...Kc6 8.c5+- mutual zugzwang - virtual stalemate] 8.Kc8 Nxa7+ 9.Kd8 Nc6+ 10.Ke8 Kxe6 11.c5 mutual zugzwang 11...Nb8 [11...Kd5 12.b8Q+-] 12.Kd8 Kd5 13.Kc8! [13.Kc7? Na6+ 14.Kb6 Nb8 15.Kc7 Na6+ positional draw] 13...Kxc5 14.Kxb8 Switchback 14...Kb6 15.Kc8 +-

Sunday, March 9, 2008

Study 34

The following study features a new romantic theme ("minor capture"):
.
Árpád Rusz
- original -
Draw(BTM)
.
1...Bb3+ 2.Nxb3! [2.Ka1? Rxe1–+] 2...cxb3+ 3.Ka1 Rxc7 4.exd6! [4.Rxe8? Nxe8–+; 4.Rxc7? Nc4!–+] 4...Rfxe7! [4...Rcxe7 5.dxe7! Qxe7! 6.Rf1!! catching the rook 6...Rxf1 stalemate; 4...Qxe7 5.dxe7=] 5.Rxe7! [5.dxe7? Qxe7!! 6.Rxe7 Rxe7–+] 5...Qxe7!!
.
6.dxc7!!
.
[6.dxe7? Rxe7 7.Bd3 Rc7 8.Be4 Rc1+ 9.Bb1 Rc2 10.Bxc2 bxc2 11.Ka2 c1N+–+] 6...Qxc7 7.Bxh7! Qc1+ [7...Qxh7 stalemate] 8.Bb1 Qxh6 9.Bd3 Qc1+ 10.Bb1 Qc2! 11.Bxc2 bxc2 12.Ka2 c1N+ 13.Kb1 Ne2 14.Kc2 Nf4 15.Kc3 Ne6 16.Kc2 mutual zugzwang 16...Nd8 17.Kc3 Nc6 18.Kc2 mutual zugzwang 18...Ne7 19.Kc3 Nf5 20.Kc2 positional draw - blockade

Friday, March 7, 2008

Studies with Banny Theme

It is possible to show the Banny Theme in a study?
Banny 1 Banny 2 Banny 3 Banny 4
Banny.pgn

Banny 4

A.Gillberg
Springaren
(1986)
3rd Pr.
Win

.
1.Re1! [1.Re4+? Rxe4 2.fxe4 Nb3 3.e7 Nc5 4.e5! Ne6! 5.Kf7 (5.Kd7 Ng7=) 5...Nc7=; 1.e7? Kxe3=] 1...Nc2 2.Re4+ [2.e7? Nxe1=] 2...Rxe4 3.fxe4 Ne3 [3...Nb4 4.Kd7 Nd3 5.e7 Nc5+ 6.Kc6+-] and now the Banny Theme:
.
4.Kf7? (A) Nc4 (a) 5.e7 Nd6+ =
4.Kd7? (B) Ng4 (b) 5.e7 Nf6+ =
4.e7! Nc4 (a) 5.Kd7 (B) +-
4...Ng4 (b) 5.Kf7 (A) +-

Banny 3

V.Kovalenko
Themes-64
(1985)
2nd Pr.
Win
.
1.Kc8? (A) f4! (a) 2.d6 f3 3.d7 f2 4.d8Q f1Q 5.Qa5+ Qa6=
1.Kc7? (B) g4! (b) 2.d6 g3 3.d7 g2 4.d8Q g1Q 5.Qb8+ Ka6=
1.d6! f4 (a) 2.Kc7! (B) f3 3.d7 f2 4.d8Q f1Q 5.Qd4+ Ka8 6.Qa4+ Qa6 7.Qe8+ Ka7 8.Qb8#
1...g4 (b) 2.Kc8! (A) g3 3.d7 g2 4.d8Q g1Q 5.Qa5#

Banny 2

M.Vukcevich
Problem
(1962)
5th comm.
Win
1.Kg8? (A) Kg2! (a) =
1.Kg7? (B) Kg1! (b) =
1.h7! Kg2 (a) 2.Kg7! (B) h2 3.h8Q h1Q 4.Qa8+ Kg1 5.Qa7+ +-
1...Kg1 (b) 2.Kg8! (A) h2 3.h8Q h1Q 4.Qd4++-

Bristol 19

Árpád Rusz
Josten-65 JT
(2002-03)
-after D.Gurgenidze-
Draw

The white knight always has two choices and every time only one is correct!
.
The first thematic try: 1.Nc6+? Rxc6 2.Bxc6 h2 3.Kg6 b5–+
1.Nb7+! Kc7 2.Kxg6 Kb8
The second thematic try: 3.Nd6? Kxa8 4.Nf5 b5! 5.Ng3 b4 6.Kf5 b3–+
3.Nc5!! Kxa8 [3...bxc5 4.Be4=]
The third thematic try: 4.Ne4? b5 5.Kf5 b4 6.Nf2 b3!–+
4.Nd3! b5 5.Kf5 b4 6.Ke4! pseudo-Bristol 6...b3 [6...h2 7.Nf2 b3 8.Kd3=] 7.Kf3= (Réti manoeuvre)
The knight had the Nf5-e4-d3 pseudo-manoeuvre to allow Kg6-f5-e4!
.
The full solution of this study can be found here .

Thursday, March 6, 2008

Bristol 18

D.Gurgenidze
Bull. Central Chess Club USSR
(1982)
4.hm
Draw
.
1.b8Q+ Qxb8 [1...Rxb8 2.Rac2+ Kd7 3.Rcd2+ Ke7 4.Kd5+ (dual 4.Kd4+ Kd6 5.Kc3+=) 4...Kd7 5.Ke5+ Ke7 6.Kd5+ perpetual check] 2.Reb2! Re8+ 3.Kf4 Rf8+ 4.Kg3 Rg8+ 5.Kh2 Rh8+ 6.Kg1 Qg8+ 7.Rg2= (pseudo-Bristol)

Bristol 17

F.Bondarenko
L'Italia Schacchistica
(1962)
Win
.
1.g5! hxg5 2.b4! g4 3.b5 g3 4.b6 gxh2 5.Rb5! h6 6.Rg5 hxg5 7.b7 g4 8.b8Q g3 9.Qb5# (pseudo-Bristol)

Bristol 16

S.Isenegger
National Zeitung
(1940)
Win
.
1.b7 d2 2.Bh8!! d1Q 3.b8Q+ Kc2 4.Qb2+ Kd3 5.Qc3+ Ke4 6.Qe3+ Kf5 7.Qe5+ Kg6 8.Qf6+ Kh7 9.Qg7# (pseudo-Bristol)

Bristol 15

T.Kok
Tijdschrift v.d. KNSB
(1939)
Win
.
1.Kd4! [1.Bxa7? stalemate] 1...a6 2.Ba7! Kg1 3.Kd5+ [minor dual 3.Kc4+ ] 3...Kh1 4.Kc5 Kg1 5.Kc6+ Kh1 6.Kb6 Kg1 7.Kxa6+ Kh1 8.Kb6 Kg1 9.Kb5+ [minor dual 9.Kc6+ ] 9...Kh1 10.Kc5 Kg1 11.Kc4+ [minor dual 11.Kd5+ ] 11...Kh1 12.Kd4 Kg1 13.Kd3+ Kh1 14.Bb8 Kg1 15.Ke2 h1Q 16.Ba7+ Kh2 17.Bf1 Kg3 18.Bf2+ Kh2 19.a6 +- (pseudo-Bristol)

Bristol 14

S.Didukh
Avni-50 JT (EG)
(2005)
4.hm
Win
.
1.Bd5+! [Thematic try: 1.Kb3? Nxf7 2.h8Q Nxh8 3.Bxh8 Bg3 4.h7 h4 5.Ba1 h3 6.h8Q h2 7.Qb2+ Bf2 8.Qg7+ Bg3 9.Be5 h1Q 10.Qxg3+ Kf1=] 1...cxd5 2.Kb3! Nf7 3.h8Q Nxh8 4.Bxh8 Bg3 5.h7 [minor dual 5.Ba1 h4 6.h7] 5...h4 6.Ba1! h3 7.h8Q h2 8.Qb2+ Bf2 9.Qg7+ Bg3 10.Be5 h1Q 11.Qxg3+ Kf1 12.Bd4 Qg2 13.Qe3 Qd2! 14.Qf3+ [14.Qxd2? stalemate] 14...Ke1 15.Bc3 +-

Bristol 13

V.Kozirev
Molodoj Leninets (Kurgan)
(1976)
1.hm
Win
.
1.Ba1! Be3+ 2.Kb5! Bd4! [2...d2 3.h8Q d1Q 4.Qc3+ Kb1 5.Qb2#] 3.Bxd4 d2 4.h8Q d1Q 5.Qc8+ Kb1 [5...Kd3 6.Qc3+ Ke4 7.Qe3+ Kd5 8.Qe5#] 6.Qc3 Qe2+ 7.Ka5 f4 8.Be5 Qa2+ 9.Kb4 f3 10.Qe1+ Kc2 11.Qe4+ Kd1 12.Bc3 Qg2 13.Kb3 +-