MESON Chess Problem Database

Problem Display
PID: 85950 (4k3/2r1P3/1KP1Q3/1B6/8/8/8/8 w - - 0 1)

Speckmann, Werner

Neue Zurcher Zeitung, 1963

4k3/2r1P3/1KP1Q3/1B6/8/8/8/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6+
      • 2.Bxc6#
    • 1...Ra7
      • 2.c7#
    • 1...Rb7+
      • 2.cxb7#
    • 1...Rd7
      • 2.cxd7#
    • 1...Rxe7
      • 2.Qg8#
    • 1...Rc8
      • 2.c7#
  • Tries
    • 1.Ka5?
      • 1...Rxc6
        • 2.Bxc6#
      • 1...Rxe7
        • 2.Qg8#
      • 1...Rb7
        • 2.cxb7#
      • 1...Rd7
        • 2.cxd7#
      • 1...Rc8
        • 2.c7#
      • 1...Ra7+!
    • 1.Ka6?
      • 1...Rxc6+
        • 2.Bxc6#
      • 1...Rxe7
        • 2.Qg8#
      • 1...Rb7
        • 2.cxb7#
      • 1...Rd7
        • 2.cxd7#
      • 1...Rc8
        • 2.c7#
      • 1...Ra7+!
    • 1.Ba4?
      • 1...Rxc6+
        • 2.Bxc6#
      • 1...Rb7+
        • 2.cxb7#
      • 1...Rxe7
        • 2.Qg8#
      • 1...Rd7
        • 2.cxd7#
      • 1...Rc8
        • 2.c7#
      • 1...Ra7!
    • 1.Qf6?
      • threat
        • 2.Qf8#
      • 1...Rxc6+
        • 2.Bxc6#
      • 1...Rb7+
        • 2.cxb7#
      • 1...Rxe7!
  • Keys
    • 1.Kc5!
      • 1...Rxc6+
        • 2.Bxc6#
      • 1...Rxe7
        • 2.Qg8#
      • 1...Ra7
        • 2.c7#
      • 1...Rb7
        • 2.cxb7#
      • 1...Rd7
        • 2.cxd7#
      • 1...Rc8
        • 2.c7#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(a);CHECK,OGATE,P_SPINR(a),XP(C)::B(A),XR(a)
    • R(a);OGATE::B(A)+P(C)
    • R(a);CHECK,OGATE::B(A)+P(C),XR(a)
    • R(a);OGATE::P(C),XR(a)
    • R(a);P_SPINR(a),SBLOCK,XP(E)::QAR2(D)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • R(a);OGATE,P_SPINR(a),XP(C)::B(A),XR(a)
        • R(a);P_SPINR(a),SBLOCK,XP(E)::QAR2(D)
        • R(a);OGATE::B(A)+P(C),XR(a)
        • R(a);OGATE::P(C),XR(a)
        • R(a);OGATE::B(A)+P(C)
      • Refutation
        • R(a);CHECK
    • Try
      • K(B);P-FLIGHT
      • Vars
        • R(a);CHECK,OGATE,P_SPINR(a),XP(C)::B(A),XR(a)
        • R(a);P_SPINR(a),SBLOCK,XP(E)::QAR2(D)
        • R(a);OGATE::B(A)+P(C),XR(a)
        • R(a);OGATE::P(C),XR(a)
        • R(a);OGATE::B(A)+P(C)
      • Refutation
        • R(a);CHECK
    • Try
      • B(A);
      • Vars
        • R(a);CHECK,OGATE,P_SPINR(a),XP(C)::B(A),XR(a)
        • R(a);CHECK,OGATE::B(A)+P(C),XR(a)
        • R(a);P_SPINR(a),SBLOCK,XP(E)::QAR2(D)
        • R(a);OGATE::P(C),XR(a)
        • R(a);OGATE::B(A)+P(C)
      • Refutation
        • R(a);
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • R(a);CHECK,OGATE,P_SPINR(a),XP(C)::B(A),XR(a)
        • R(a);CHECK,OGATE::B(A)+P(C),XR(a)
      • Refutation
        • R(a);XP(E)
  • Actual
    • K(B);P_SPINP(C),S_FLIGHT
    • Vars
      • R(a);CHECK,OGATE,P_SPINR(a),XP(C)::B(A),XR(a)
      • R(a);N_PINP(C),P_SPINR(a),SBLOCK,XP(E)::QAR2(D)
      • R(a);N_PINP(C)::B(A)+P(C)
      • R(a);N_PINP(C)::B(A)+P(C),XR(a)
      • R(a);N_PINP(C)::P(C),XR(a)
      • R(a);::B(A)+P(C)
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