MESON Chess Problem Database
Problem Display
PID: 275661 (2rb2B1/Q1p1P1PP/2k2K1R/p2RPPP1/8/1n5b/2N1q3/8 w - - 0 1)
Maleika, Gerhard
Phenix, 2001
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Qa6#
- 1...Qf3
- 2.Qa6#
- 1...Qg4
- 2.Qa6#
- 1...Qh5
- 2.Qa6#
- 1...Qa6
- 2.Qxa6#
- 1...Qe1
- 2.Qa6#
- 1...Qxc2
- 2.Qa6#
- 1...Qd2
- 2.Qa6#
- 1...Qg2
- 2.Qa6#
- 1...Qh2
- 2.Qa6#
- 1...Qe4
- 2.Qa6#
- 1...Qxe5+
- 2.Kxe5#
- 1...Bxf5
- 2.Kxf5#
- 1...Bxe7+
- 2.Kxe7#
- 1...Sa1
- 2.Sd4#
- 1...Sc1
- 2.Sd4#
- 1...Sd2
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sc5
- 2.Sd4#
- 1...a4
- 2.Sb4#
- 1...Qd1
- Tries
- 1.Kg6?
- threat
- 2.e8Q#
- 2.e8B#
- 1...Qh5+
- 2.Kxh5#
- 1...Bxf5+
- 2.Kxf5#
- 1...Qxc2
- 2.Kh5#
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qxe5
- 2.Qa6#
- 1...Sc5
- 2.Sd4#
- 1...Qd1
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qf1
- 2.Kh5#
- 2.e8Q#
- 2.e8B#
- 1...Qd3
- 2.Kh5#
- 2.e8Q#
- 2.e8B#
- 1...Qf3
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qc4
- 2.Kh5#
- 2.e8Q#
- 2.e8B#
- 1...Qg4
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qb5
- 2.Kh5#
- 2.e8Q#
- 2.e8B#
- 1...Qa6
- 2.Kh5#
- 2.Qxa6#
- 2.e8Q#
- 2.e8B#
- 1...Qe1
- 2.Kh5#
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qd2
- 2.Kh5#
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qf2
- 2.Kh5#
- 2.e8Q#
- 2.e8B#
- 1...Qg2
- 2.Kh5#
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qh2
- 2.Kh5#
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qe3
- 2.Kh5#
- 2.e8Q#
- 2.e8B#
- 1...Qe4
- 2.Kh5#
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Ra8
- 2.e8Q#
- 2.e8B#
- 1...Rb8
- 2.e8Q#
- 2.e8B#
- 1...Bf1
- 2.e8Q#
- 2.e8B#
- 1...Bg2
- 2.e8Q#
- 2.e8B#
- 1...Bg4
- 2.e8Q#
- 2.e8B#
- 1...Sa1
- 2.Sd4#
- 2.e8Q#
- 2.e8B#
- 1...Sc1
- 2.Sd4#
- 2.e8Q#
- 2.e8B#
- 1...Sd2
- 2.Sd4#
- 2.e8Q#
- 2.e8B#
- 1...Sd4
- 2.Sxd4#
- 2.e8Q#
- 2.e8B#
- 1...a4
- 2.Sb4#
- 2.e8Q#
- 2.e8B#
- 1...Bxe7!
- threat
- 1.exd8Q?
- threat
- 2.Ke7#
- 2.Kf7#
- 2.Qd7#
- 1...Qxe5+
- 2.Kxe5#
- 1...Bxf5
- 2.Kxf5#
- 1...Sc5
- 2.Sd4#
- 2.Rxc5#
- 1...Qh5
- 2.Qa6#
- 2.Qd7#
- 1...Sd4
- 2.Sxd4#
- 2.Rc5#
- 2.Qd7#
- 1...Rxd8!
- threat
- 1.exd8B?
- threat
- 2.Ke7#
- 1...Qxe5+
- 2.Kxe5#
- 1...Bxf5
- 2.Kxf5#
- 1...Sc5
- 2.Sd4#
- 1...Qh5
- 2.Qa6#
- 1...Sd4
- 2.Sxd4#
- 1...Rxd8!
- threat
- 1.exd8R?
- threat
- 2.Ke7#
- 2.Kf7#
- 1...Qxe5+
- 2.Kxe5#
- 1...Bxf5
- 2.Kxf5#
- 1...Sc5
- 2.Sd4#
- 2.Rxc5#
- 1...Qh5
- 2.Qa6#
- 1...Sd4
- 2.Sxd4#
- 2.Rc5#
- 1...Rxd8!
- threat
- 1.Kg6?
- Keys
- 1.Ke6!
- threat
- 2.e8Q#
- 2.e8B#
- 1...Qxe5+
- 2.Kxe5#
- 1...Bxf5+
- 2.Kxf5#
- 1...Sd4+
- 2.Sxd4#
- 1...Sc5+
- 2.Rxc5#
- 1...Qxc2
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Bxe7
- 2.Kxe7#
- 1...Qd1
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qf1
- 2.e8Q#
- 2.e8B#
- 1...Qd3
- 2.e8Q#
- 2.e8B#
- 1...Qf3
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qc4
- 2.e8Q#
- 2.e8B#
- 1...Qg4
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qb5
- 2.e8Q#
- 2.e8B#
- 1...Qh5
- 2.Qa6#
- 1...Qa6
- 2.Qxa6#
- 2.e8Q#
- 2.e8B#
- 1...Qe1
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qd2
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qf2
- 2.e8Q#
- 2.e8B#
- 1...Qg2
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qh2
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Qe3
- 2.e8Q#
- 2.e8B#
- 1...Qe4
- 2.Qa6#
- 2.e8Q#
- 2.e8B#
- 1...Ra8
- 2.e8Q#
- 2.e8B#
- 1...Rb8
- 2.e8Q#
- 2.e8B#
- 1...Bf1
- 2.e8Q#
- 2.e8B#
- 1...Bg2
- 2.e8Q#
- 2.e8B#
- 1...Bg4
- 2.e8Q#
- 2.e8B#
- 1...Sa1
- 2.Sd4#
- 2.Rc5#
- 2.e8Q#
- 2.e8B#
- 1...Sc1
- 2.Sd4#
- 2.Rc5#
- 2.e8Q#
- 2.e8B#
- 1...Sd2
- 2.Sd4#
- 2.Rc5#
- 2.e8Q#
- 2.e8B#
- 1...a4
- 2.Sb4#
- 2.e8Q#
- 2.e8B#
- threat
- 1.Ke6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 14
- Sets
- Q(a);N_GUARD::QAR2(H)
- Q(a);N_GUARD,N_PINP(I),P_PINP(D)::QAR2(H)
- Q(a);N_GUARD::QAR2(H),XQ(a)
- Q(a);N_GUARD,XS(A)::QAR2(H)
- Q(a);CHECK,XP(C)::R(G)+K(F),XQ(a)
- B(c);XP(D)::R(G)+K(F),XB(c)
- B(h);CHECK,XP(I)::R(G)+K(F),XB(h)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- P(d);N_GUARD::S(A)
- Tries
- Try
- K(F);N_SPINP(I),P-FLIGHT
- Threat
- P=Q
- Vars
- Q(a);CHECK::R(G)+K(F),XQ(a)
- B(c);CHECK,XP(D)::R(G)+K(F),XB(c)
- Q(a);N_GUARD,XP(C)::QAR2(H)
- S(b);N_GUARD::S(A)
- R(g);::P=Q
- B(c);::P=Q
- Refutation
- B(h);XP(I)
- Try
- P(I);N_SPINP(I),XB(h)
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,XP(C)::R(G)+K(F),XQ(a)
- B(c);XP(D)::R(G)+K(F),XB(c)
- Refutation
- R(g);XQ(I)
- Try
- P(I);N_SPINP(I),XB(h)
- Threat
- R(G)+K(F)
- Vars
- Q(a);CHECK,XP(C)::R(G)+K(F),XQ(a)
- B(c);XP(D)::R(G)+K(F),XB(c)
- S(b);N_GUARD::S(A)
- Q(a);N_GUARD::QAR2(H)
- S(b);N_GUARD::S(A),XS(b)
- Refutation
- R(g);XB(I)
- Try
- P(I);N_SPINP(I),XB(h)
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,XP(C)::R(G)+K(F),XQ(a)
- B(c);XP(D)::R(G)+K(F),XB(c)
- Q(a);N_GUARD::QAR2(H)
- Refutation
- R(g);XR(I)
- Try
- Actual
- K(F);N_SPINP(I),P-FLIGHT,P_SPINP(C)
- Threat
- P=Q
- Vars
- Q(a);CHECK,P_PINP(D),XP(C)::R(G)+K(F),XQ(a)
- B(c);CHECK,XP(D)::R(G)+K(F),XB(c)
- S(b);CHECK,N_GUARD::S(A),XS(b)
- S(b);CHECK,N_GUARD::R1(B),XS(b)
- B(h);XP(I)::R(G)+K(F),XB(h)
- Q(a);N_PINP(C),P_PINP(D)::P=Q
- Q(a);N_PINP(C),P_PINP(D),P_PINR(B)::P=Q
- Q(a);N_GUARD,N_PINP(C),P_PINP(D)::QAR2(H)
- Q(a);::P=Q
- R(g);::P=Q
- B(c);::P=Q
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).