MESON Chess Problem Database
Problem Display
PID: 239087 (5K2/1pp3Pp/p1P1k3/1QP5/2N2R2/2N5/6r1/5nrB w - - 0 1)
Bakcsi, Gyorgy
Ersek, Tibor
Schweizerische Schachzeitung, 1989
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Bd5#
- 1...Rb2
- 2.Bd5#
- 1...Rc2
- 2.Bd5#
- 1...Re2
- 2.Bd5#
- 1...Rf2
- 2.Bd5#
- 1...Rh2
- 2.Bd5#
- 1...Rg3
- 2.Bd5#
- 1...Rg4
- 2.Bd5#
- 1...Rg6
- 2.Bd5#
- 1...Rxg7
- 2.Bd5#
- 1...Sg3
- 2.g8Q#
- 2.g8B#
- 1...bxc6
- 2.Qxc6#
- 1...Ra2
- Tries
- 1.Bxg2?
- threat
- 2.Bd5#
- 2.g8Q#
- 2.g8B#
- 1...axb5
- 2.Bd5#
- 2.g8Q#
- 2.g8B#
- 1...bxc6
- 2.Qxc6#
- 1...Rh1
- 2.Bd5#
- 2.g8Q#
- 2.g8B#
- 1...Sd2
- 2.Bd5#
- 2.g8Q#
- 2.g8B#
- 1...Sh2
- 2.Bd5#
- 2.g8Q#
- 2.g8B#
- 1...Se3
- 2.g8Q#
- 2.g8B#
- 1...Sg3
- 2.Bd5#
- 2.g8Q#
- 2.g8B#
- 1...a5
- 2.Bd5#
- 2.g8Q#
- 2.g8B#
- 1...b6
- 2.Bd5#
- 2.g8Q#
- 2.g8B#
- 1...h5
- 2.Bd5#
- 2.g8Q#
- 2.g8B#
- 1...h6
- 2.Bd5#
- 2.g8Q#
- 2.g8B#
- 1...Rxg2!
- threat
- 1.Qb1?
- threat
- 2.Qe4#
- 2.Qf5#
- 1...bxc6
- 2.Qf5#
- 1...Rc2
- 2.Bd5#
- 1...Re2
- 2.Bd5#
- 2.Qf5#
- 1...Sd2
- 2.Qf5#
- 1...Se3
- 2.Qe4#
- 1...Sg3
- 2.g8Q#
- 2.g8B#
- 1...Rg5!
- threat
- 1.Qxb7?
- threat
- 2.Qc8#
- 1...Rxg7
- 2.Bd5#
- 1...Rd2!
- threat
- 1.cxb7?
- threat
- 2.Qc6#
- 2.Qe8#
- 1...Rxg7
- 2.Bd5#
- 2.Qc6#
- 1...c6
- 2.Qxc6#
- 1...Rd2
- 2.Qe8#
- 1...axb5!
- threat
- 1.g8S?
- threat
- 2.Rf6#
- 1...bxc6
- 2.Qxc6#
- 1...Rf2
- 2.Bd5#
- 1...Rg6
- 2.Bd5#
- 1...Rxg8+!
- threat
- 1.Bxg2?
- Keys
- 1.Sd5!
- threat
- 2.Sxc7#
- 1...Kxd5
- 2.g8Q#
- 2.g8B#
- 1...Rxg7
- 2.Rf6#
- 1...bxc6
- 2.Qxc6#
- threat
- 1.Sd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- R(c);OGATE::B(A)
- R(c);OGATE,P_PINR(D)::B(A)
- R(c);OGATE,XP(H)::B(A)
- S(a);S_CUTR(c)::P=Q
- P(f);OGATE,XP(G)::QAR2(E),XP(f)
- Tries
- Try
- B(A);XR(c)
- Threat
- DUALS(3)
- Vars
- P(f);OGATE,XP(G)::QAR2(E),XP(f)
- S(a);::P=Q
- Refutation
- R(b);XB(A)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- P(f);XP(G)::QAB1(E)
- R(c);OGATE::B(A)
- S(a);::QAB1(E)
- S(a);::QAR2(E)
- S(a);S_CUTR(c)::P=Q
- Refutation
- R(c);
- Try
- Q(E);XP(f)
- Threat
- QAB(E)
- Vars
- R(c);OGATE,XP(H)::B(A)
- Refutation
- R(c);
- Try
- P(G);XP(f)
- Threat
- DUALS(2)
- Vars
- P(g);::QAR2(E),XP(g)
- R(c);::QAR2(E)
- Refutation
- P(d);XQ(E)
- Try
- P(H);
- Threat
- R1(D)
- Vars
- P(f);OGATE,XP(G)::QAR2(E),XP(f)
- R(c);OGATE,P_PINR(D)::B(A)
- R(c);OGATE::B(A)
- Refutation
- R(c);CHECK,XS(H)
- Try
- Actual
- S(B);
- Threat
- S(B),XP(g)
- Vars
- K(e);P_SPINR(c),S_FLIGHT,XS(B)::P=Q
- R(c);XP(H)::R1(D)
- P(f);OGATE,XP(G)::QAR2(E),XP(f)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).