MESON Chess Problem Database
Problem Display
PID: 67517 (5B2/3q2Q1/5rb1/1pppR3/3k1P1R/N7/1PP5/1K3B2 w - - 0 1)
Ellerman, Arnoldo
Chess, 1948
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.Sxb5#
- 1...Qg4
- 2.Sxb5#
- 1...Qf5
- 2.Sxb5#
- 1...Qe6
- 2.Sxb5#
- 1...Qc8
- 2.Sxb5#
- 1...Qd6
- 2.Sxb5#
- 1...Qa7
- 2.Sxb5#
- 1...Qc7
- 2.Sxb5#
- 1...Qe7
- 2.Sxb5#
- 1...Qf7
- 2.Sxb5#
- 1...Qxg7
- 2.Sxb5#
- 1...Qd8
- 2.Sxb5#
- 1...Rxf4
- 2.Re7#
- 1...Rf5
- 2.c3#
- 1...Ra6
- 2.f5#
- 1...Rb6
- 2.f5#
- 1...Rc6
- 2.Sxb5#
- 2.f5#
- 1...Rd6
- 2.f5#
- 1...Re6
- 2.f5#
- 1...Rf7
- 2.f5#
- 1...Rxf8
- 2.f5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Bd3
- 2.Qg1#
- 1...Be4
- 2.Qg1#
- 1...Bf5
- 2.Qg1#
- 1...Bh5
- 2.Qg1#
- 2.c3#
- 1...Bf7
- 2.Qg1#
- 2.c3#
- 1...Bh7
- 2.Qg1#
- 1...Be8
- 2.Qg1#
- 2.c3#
- 1...Qh3
- Tries
- 1.Ka1?
- threat
- 2.c3#
- 1...Bxc2
- 2.Sxc2#
- 2.Qg1#
- 1...Be4
- 2.Qg1#
- 1...Qh3
- 2.Sxb5#
- 1...b4!
- threat
- 1.Kc1?
- threat
- 2.c3#
- 1...Bxc2
- 2.Sxc2#
- 2.Qg1#
- 1...Be4
- 2.Qg1#
- 1...Qh3
- 2.Sxb5#
- 1...b4!
- threat
- 1.Ka2?
- threat
- 2.c3#
- 1...Bxc2
- 2.Sxc2#
- 2.Qg1#
- 1...Be4
- 2.Qg1#
- 1...Qh3
- 2.Sxb5#
- 1...b4!
- threat
- 1.Re1?
- threat
- 2.Qxf6#
- 2.f5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Qxg7
- 2.Sxb5#
- 2.f5#
- 1...Qh3
- 2.Sxb5#
- 2.Qxf6#
- 1...Qg4
- 2.Sxb5#
- 2.Qxf6#
- 1...Qf5
- 2.Sxb5#
- 1...Qc6
- 2.f5#
- 1...Qe6
- 2.Sxb5#
- 1...Qd6
- 2.Sxb5#
- 1...Qc7
- 2.Sxb5#
- 1...Qe7
- 2.Sxb5#
- 1...Qf7
- 2.Sxb5#
- 2.f5#
- 1...Qd8
- 2.Sxb5#
- 2.f5#
- 1...Bd3
- 2.Qxf6#
- 2.Qg1#
- 1...Be4
- 2.Qxf6#
- 2.Qg1#
- 1...Bf5
- 2.Qxf6#
- 2.Qg1#
- 1...Bh5
- 2.Qxf6#
- 2.Qg1#
- 2.c3#
- 1...Qe8!
- threat
- 1.Re6?
- threat
- 2.Qxf6#
- 2.f5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Qxg7
- 2.Sxb5#
- 2.f5#
- 1...Be4
- 2.Qg1#
- 1...Qd6
- 2.Sxb5#
- 1...Qc7
- 2.Sxb5#
- 1...Qe7
- 2.Sxb5#
- 2.f5#
- 1...Qf7
- 2.Sxb5#
- 2.f5#
- 1...Qd8
- 2.Sxb5#
- 2.f5#
- 1...Bd3
- 2.Qxf6#
- 2.Qg1#
- 1...Bf5
- 2.Qxf6#
- 2.Qg1#
- 1...Bh5
- 2.Qxf6#
- 2.Qg1#
- 2.c3#
- 1...Qxe6!
- threat
- 1.Qxf6?
- threat
- 2.Re1#
- 2.Re2#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 2.f5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Qh3
- 2.Sxb5#
- 2.Re1#
- 2.Re2#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qg4
- 2.Sxb5#
- 2.Re1#
- 2.Re2#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qf5
- 2.Sxb5#
- 1...Qc6
- 2.Re6#
- 2.f5#
- 1...Qe6
- 2.Sxb5#
- 2.Rxe6#
- 2.f5#
- 1...Qe8
- 2.Re6#
- 2.Re7#
- 2.Rxe8#
- 2.f5#
- 1...Qd6
- 2.Sxb5#
- 2.f5#
- 1...Qc7
- 2.Sxb5#
- 2.f5#
- 1...Qe7
- 2.Sxb5#
- 2.Rxe7#
- 2.f5#
- 1...Qf7
- 2.Sxb5#
- 2.f5#
- 1...Qg7
- 2.Sxb5#
- 2.f5#
- 1...Qh7
- 2.Sxb5#
- 2.Re1#
- 2.Re2#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qd8
- 2.Sxb5#
- 2.Re7#
- 2.f5#
- 1...Bd3
- 2.Re1#
- 2.Re2#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bf5
- 2.Re1#
- 2.Re2#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bh5
- 2.Re1#
- 2.Re2#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 2.c3#
- 1...Be8
- 2.Re1#
- 2.Re2#
- 2.Re6#
- 2.Re7#
- 2.Rxe8#
- 2.c3#
- 2.f5#
- 1...c4
- 2.Re1#
- 2.Re2#
- 2.Re6#
- 2.Re8#
- 2.Qb6#
- 2.f5#
- 1...Be4!
- threat
- 1.Qxg6?
- threat
- 2.Qd3#
- 2.Qg1#
- 2.c3#
- 1...Rxg6
- 2.c3#
- 1...b4
- 2.Qd3#
- 2.Qg1#
- 1...Qh3
- 2.Sxb5#
- 1...Qg4
- 2.Sxb5#
- 2.Qd3#
- 2.c3#
- 1...Qf5
- 2.Sxb5#
- 2.Qg1#
- 1...Qg7
- 2.Sxb5#
- 2.Qd3#
- 2.c3#
- 1...Qh7
- 2.Sxb5#
- 2.Qg1#
- 2.c3#
- 1...Rf5
- 2.Qg1#
- 2.c3#
- 1...c4
- 2.Qg1#
- 2.c3#
- 1...Rxf4!
- threat
- 1.Qxd7?
- threat
- 2.Sxb5#
- 2.Qxd5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Rxf4
- 2.Qxd5#
- 1...b4
- 2.Sb5#
- 2.Qxd5#
- 1...Rb6
- 2.Qxd5#
- 1...Rd6
- 2.Sxb5#
- 1...Bd3
- 2.Qxd5#
- 1...Bf7
- 2.Sxb5#
- 2.c3#
- 1...Be4!
- threat
- 1.Qe7?
- threat
- 2.Qxc5#
- 2.f5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Qxe7
- 2.Sxb5#
- 1...Rxf8
- 2.f5#
- 1...Be4
- 2.Qxc5#
- 1...Qh3
- 2.Sxb5#
- 2.Qxc5#
- 1...Qg4
- 2.Sxb5#
- 2.Qxc5#
- 1...Qf5
- 2.Sxb5#
- 2.Qxc5#
- 1...Qc6
- 2.f5#
- 1...Qe6
- 2.Sxb5#
- 2.Qxc5#
- 1...Qc8
- 2.Sxb5#
- 2.f5#
- 1...Qd6
- 2.Sxb5#
- 2.f5#
- 1...Qa7
- 2.Sxb5#
- 2.f5#
- 1...Qc7
- 2.Sxb5#
- 2.f5#
- 1...Rf5
- 2.Qxc5#
- 2.c3#
- 1...Rc6
- 2.Sxb5#
- 2.f5#
- 1...Rd6
- 2.f5#
- 1...Re6
- 2.Qxc5#
- 1...Bd3
- 2.Qxc5#
- 1...Bf5
- 2.Qxc5#
- 1...Bh5
- 2.Qxc5#
- 2.c3#
- 1...c4
- 2.Qc5#
- 2.f5#
- 1...Rxf4!
- threat
- 1.Ka1?
- Keys
- 1.Bd6!
- threat
- 2.f5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Qxd6
- 2.Sxb5#
- 1...Rxf4
- 2.Re7#
- 1...Be4
- 2.Qg1#
- 1...Qh3
- 2.Sxb5#
- 1...Qg4
- 2.Sxb5#
- 1...Qf5
- 2.Sxb5#
- 1...Rf5
- 2.c3#
- 1...Bd3
- 2.Qg1#
- 1...Bf5
- 2.Qg1#
- 1...Bh5
- 2.Qg1#
- 2.c3#
- threat
- 1.Bd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 15
- Sets
- Q(g);N_GUARD::S(E),XP(b)
- Q(g);N_GUARD,XQ(I)::S(E),XP(b)
- R(e);OGATEB,P_SPINR(e),XP(F)::QAB(I)+R(H)
- R(e);N_PINP(D)::P(D)
- R(e);::R(G)+P(F)
- R(e);XB(J)::R(G)+P(F)
- B(f);CHECK,XP(D)::S(E),XB(f)
- B(f);OGATE::QAB(I)
- Tries
- Try
- K(A);N_SPINP(D),P-FLIGHT
- Threat
- P(D)
- Vars
- B(f);OGATE::QAB(I)
- Q(g);N_GUARD::S(E),XP(b)
- Refutation
- P(b);
- Try
- K(A);N_SPINP(D),P-FLIGHT
- Threat
- P(D)
- Vars
- B(f);OGATE::QAB(I)
- Q(g);N_GUARD::S(E),XP(b)
- Refutation
- P(b);
- Try
- K(A);N_SPINP(D),S_FLIGHT
- Threat
- P(D)
- Vars
- B(f);OGATE::QAB(I)
- Q(g);N_GUARD::S(E),XP(b)
- Refutation
- P(b);
- Try
- R(H);P_PINR(e)
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,XP(D)::S(E),XB(f)
- Q(g);N_GUARD::S(E),XP(b)
- Q(g);::R(G)+P(F)
- Refutation
- Q(g);
- Try
- R(H);P_PINR(e)
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,XP(D)::S(E),XB(f)
- B(f);OGATE::QAB(I)
- Q(g);N_GUARD::S(E),XP(b)
- Refutation
- Q(g);XR(H)
- Try
- Q(I);XR(e)
- Threat
- DUALS(6)
- Vars
- B(f);CHECK,XP(D)::S(E),XB(f)
- Q(g);N_GUARD::S(E),XP(b)
- Refutation
- B(f);
- Try
- Q(I);N_SPINP(D),XB(f)
- Threat
- DUALS(3)
- Vars
- R(e);XQ(I)::P(D)
- Q(g);N_GUARD::S(E),XP(b)
- Refutation
- R(e);P_SPINR(e),XP(F)
- Try
- Q(I);P_PINP(d),XQ(g)
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,XP(D)::S(E),XB(f)
- R(e);P_SPINR(e),XP(F)::QAR1(I),XP(d)
- R(e);::QAR1(I),XP(d)
- R(e);N_SPINP(d)::S(E),XP(b)
- B(f);::QAR1(I),XP(d)
- Refutation
- B(f);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,XP(D)::S(E),XB(f)
- Q(g);N_GUARD,XQ(I)::S(E),XP(b)
- R(e);XB(J)::R(G)+P(F)
- B(f);::QAB1(I),XP(c)
- Q(g);::R(G)+P(F)
- R(e);::R(G)+P(F)
- R(e);::QAB1(I),XP(c)
- Refutation
- R(e);P_SPINR(e),XP(F)
- Try
- Actual
- B(J);
- Threat
- R(G)+P(F)
- Vars
- B(f);CHECK,XP(D)::S(E),XB(f)
- Q(g);N_GUARD,XB(J)::S(E),XP(b)
- R(e);OGATEB,P_SPINR(e),XP(F)::QAB(I)+R(H)
- B(f);OGATE::QAB(I)
- Q(g);N_GUARD::S(E),XP(b)
- R(e);N_PINP(D)::P(D)
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).