MESON Chess Problem Database
Problem Display
PID: 257578 (3B4/2p5/pP6/kpK4Q/r1p5/8/8/R1N5 w - - 0 1)
Maleika, Gerhard
Phenix, 2021
#2
6 + 6
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...c3
- 2.Sb3#
- 1...b4
- 2.Kc6#
- 1...cxb6+
- 2.Bxb6#
- 1...c6
- 2.b7#
- 1...Ra2
- Tries
- 1.Bxc7?
- threat
- 2.b7#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...Rxa1!
- threat
- 1.Ra2?
- 1...cxb6+
- 2.Bxb6#
- 1...Ra3
- 2.Rxa3#
- 1...c3
- 2.Sb3#
- 1...b4
- 2.Kc6#
- 1...c6
- 2.b7#
- 1...Rxa2!
- 1...cxb6+
- 1.Ra3?
- 1...cxb6+
- 2.Bxb6#
- 1...c3
- 2.Sb3#
- 1...b4
- 2.Kc6#
- 1...c6
- 2.b7#
- 1...Rxa3!
- 1...cxb6+
- 1.Qd1?
- 1...cxb6+
- 2.Bxb6#
- 1...c3
- 2.Sb3#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...b4
- 2.Rxa4#
- 2.Qxa4#
- 1...c6
- 2.b7#
- 1...Rxa1!
- 1...cxb6+
- 1.Qe8?
- 1...cxb6+
- 2.Bxb6#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...b4
- 2.Rxa4#
- 2.Qxa4#
- 1...c3
- 2.Sb3#
- 1...c6
- 2.b7#
- 1...Rxa1!
- 1...cxb6+
- 1.Qd5?
- 1...cxb6+
- 2.Bxb6#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...b4
- 2.Kc6#
- 1...c3
- 2.Sb3#
- 1...c6
- 2.b7#
- 1...Rxa1!
- 1...cxb6+
- 1.Qf5?
- 1...cxb6+
- 2.Bxb6#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...b4
- 2.Kc6#
- 1...c3
- 2.Sb3#
- 1...c6
- 2.b7#
- 1...Rxa1!
- 1...cxb6+
- 1.Qg5?
- 1...cxb6+
- 2.Bxb6#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...b4
- 2.Kc6#
- 1...c3
- 2.Sb3#
- 1...c6
- 2.b7#
- 1...Rxa1!
- 1...cxb6+
- 1.Qh8?
- 1...cxb6+
- 2.Bxb6#
- 1...Rxa1
- 2.Qxa1#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...c3
- 2.Sb3#
- 1...c6
- 2.b7#
- 1...b4!
- 1...cxb6+
- 1.bxc7?
- threat
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...b4
- 2.Kc6#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...c3
- 2.Sb3#
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Rxa1!
- threat
- 1.b7?
- threat
- 2.Bxc7#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...Rxa1!
- threat
- 1.Bxc7?
- Keys
- 1.Qe5!
- 1...cxb6+
- 2.Bxb6#
- 1...Rxa1
- 2.Qxa1#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...b4
- 2.Kc6#
- 1...c3
- 2.Sb3#
- 1...c6
- 2.b7#
- 1...cxb6+
- 1.Qe5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(a);OGATEB::R(A),XR(a)
- P(b);N_GUARD::S(B)
- P(d);SBLOCK::QAR(D)+K(C)
- P(f);CHECK,OGATE,P_SPINP(f),XP(E)::B(F),XP(f)
- P(f);::B(F)+P(E)
- Tries
- Try
- B(F);XP(f)
- Threat
- B(F)+P(E)
- Vars
- R(a);OGATEB::R(A),XR(a)
- Refutation
- R(a);N_SPINR(a),XR(A)
- Try
- R(A);
- Vars
- P(f);CHECK,OGATE,P_SPINP(f),XP(E)::B(F),XP(f)
- R(a);OGATEB::R(A),XR(a)
- P(b);N_GUARD::S(B)
- P(d);SBLOCK::QAR(D)+K(C)
- P(f);::B(F)+P(E)
- Refutation
- R(a);N_SPINR(a),XR(A)
- Try
- R(A);
- Vars
- P(f);CHECK,OGATE,P_SPINP(f),XP(E)::B(F),XP(f)
- P(b);N_GUARD::S(B)
- P(d);SBLOCK::QAR(D)+K(C)
- P(f);::B(F)+P(E)
- Refutation
- R(a);N_SPINR(a),XR(A)
- Try
- Q(D);
- Vars
- P(f);CHECK,OGATE,P_SPINP(f),XP(E)::B(F),XP(f)
- P(b);N_GUARD::S(B)
- R(a);OGATEB::R(A),XR(a)
- P(f);::B(F)+P(E)
- Refutation
- R(a);N_SPINR(a),XR(A)
- Try
- Q(D);
- Vars
- P(f);CHECK,OGATE,P_SPINP(f),XP(E)::B(F),XP(f)
- R(a);OGATEB::R(A),XR(a)
- P(b);N_GUARD::S(B)
- P(f);::B(F)+P(E)
- Refutation
- R(a);N_SPINR(a),XR(A)
- Try
- Q(D);
- Vars
- P(f);CHECK,OGATE,P_SPINP(f),XP(E)::B(F),XP(f)
- R(a);OGATEB::R(A),XR(a)
- P(d);SBLOCK::QAR(D)+K(C)
- P(b);N_GUARD::S(B)
- P(f);::B(F)+P(E)
- Refutation
- R(a);N_SPINR(a),XR(A)
- Try
- Q(D);
- Vars
- P(f);CHECK,OGATE,P_SPINP(f),XP(E)::B(F),XP(f)
- R(a);OGATEB::R(A),XR(a)
- P(d);SBLOCK::QAR(D)+K(C)
- P(b);N_GUARD::S(B)
- P(f);::B(F)+P(E)
- Refutation
- R(a);N_SPINR(a),XR(A)
- Try
- Q(D);
- Vars
- P(f);CHECK,OGATE,P_SPINP(f),XP(E)::B(F),XP(f)
- R(a);OGATEB::R(A),XR(a)
- P(d);SBLOCK::QAR(D)+K(C)
- P(b);N_GUARD::S(B)
- P(f);::B(F)+P(E)
- Refutation
- R(a);N_SPINR(a),XR(A)
- Try
- Q(D);
- Vars
- P(f);CHECK,OGATE,P_SPINP(f),XP(E)::B(F),XP(f)
- R(a);N_SPINR(a),OGATE,XR(A)::QAR(D),XR(a)
- R(a);OGATEB::R(A),XR(a)
- P(b);N_GUARD::S(B)
- P(f);::B(F)+P(E)
- Refutation
- P(d);
- Try
- P(E);XP(f)
- Threat
- DUALS(4)
- Vars
- R(a);OGATEB::R(A),XR(a)
- Refutation
- R(a);N_SPINR(a),XR(A)
- Try
- P(E);P_PINP(f)
- Threat
- B(F),XP(f)
- Vars
- R(a);OGATEB::R(A),XR(a)
- Refutation
- R(a);N_SPINR(a),XR(A)
- Try
- Actual
- Q(D);
- Vars
- P(f);CHECK,OGATE,P_SPINP(f),XP(E)::B(F),XP(f)
- R(a);N_SPINR(a),OGATE,XR(A)::QAR(D),XR(a)
- R(a);OGATEB::R(A),XR(a)
- P(d);SBLOCK::QAR(D)+K(C)
- P(b);N_GUARD::S(B)
- P(f);::B(F)+P(E)
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).