MESON Chess Problem Database

Problem Display
PID: 57276 (3K2kr/5RPN/4p3/8/2Q5/8/B7/8 w - - 0 1)

Cuppini, Alessandro

Troll, 1996

3K2kr/5RPN/4p3/8/2Q5/8/B7/8

#2

6 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Sf6#
  • Tries
    • 1.Ke7?
      • threat
        • 2.Sf6#
      • 1...Rxh7
        • 2.Qc8#
      • 1...Kxh7!
    • 1.Ra7?
      • threat
        • 2.Sf6#
      • 1...Rxh7
        • 2.Qxe6#
      • 1...Kxh7+!
    • 1.Rb7?
      • threat
        • 2.Sf6#
      • 1...Rxh7
        • 2.Qxe6#
      • 1...Kxh7+!
    • 1.Rc7?
      • threat
        • 2.Sf6#
      • 1...Rxh7
        • 2.Qxe6#
      • 1...Kxh7+!
    • 1.Rd7?
      • threat
        • 2.Sf6#
      • 1...Rxh7
        • 2.Qxe6#
      • 1...Kxh7+!
    • 1.Re7?
      • threat
        • 2.Sf6#
      • 1...Rxh7
        • 2.Qxe6#
      • 1...Kxh7+!
    • 1.Qxe6?
      • threat
        • 2.Sf6#
      • 1...Rxh7
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rc7#
        • 2.Rd7#
        • 2.Re7#
        • 2.Qe8#
      • 1...Kxh7+!
    • 1.Qc7?
      • threat
        • 2.Sf6#
      • 1...Rxh7
        • 2.Rf8#
      • 1...Kxh7+!
    • 1.gxh8Q+?
      • 1...Kxf7
        • 2.Qxe6#
      • 1...Kxh8!
  • Keys
    • 1.Qg4!
      • 1...Kxf7+
        • 2.gxh8S#
      • 1...Kxh7+
        • 2.g8S#
      • 1...Rxh7
        • 2.Rf8#
      • 1...e5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);::S(E)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Threat
        • S(E)
      • Vars
        • R(c);SBLOCK,XS(E)::QAR(B)
      • Refutation
        • K(b);S_FLIGHT,XS(E)
    • Try
      • R(C);P_PINP(a)
      • Threat
        • S(E)
      • Vars
        • R(c);SBLOCK,XS(E)::QAB(B),XP(a)
      • Refutation
        • K(b);CHECK,N_SPINP(a),S_FLIGHT,XS(E)
    • Try
      • R(C);P_PINP(a)
      • Threat
        • S(E)
      • Vars
        • R(c);SBLOCK,XS(E)::QAB(B),XP(a)
      • Refutation
        • K(b);CHECK,N_SPINP(a),S_FLIGHT,XS(E)
    • Try
      • R(C);P_PINP(a)
      • Threat
        • S(E)
      • Vars
        • R(c);SBLOCK,XS(E)::QAB(B),XP(a)
      • Refutation
        • K(b);CHECK,N_SPINP(a),S_FLIGHT,XS(E)
    • Try
      • R(C);P_PINP(a)
      • Threat
        • S(E)
      • Vars
        • R(c);SBLOCK,XS(E)::QAB(B),XP(a)
      • Refutation
        • K(b);CHECK,N_SPINP(a),S_FLIGHT,XS(E)
    • Try
      • R(C);P_PINP(a)
      • Threat
        • S(E)
      • Vars
        • R(c);SBLOCK,XS(E)::QAB(B),XP(a)
      • Refutation
        • K(b);CHECK,N_SPINP(a),S_FLIGHT,XS(E)
    • Try
      • Q(B);XP(a)
      • Threat
        • S(E)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(E)
    • Try
      • Q(B);
      • Threat
        • S(E)
      • Vars
        • R(c);SBLOCK,XS(E)::R1(C)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(E)
    • Try
      • P(D);CHECK,XR(c)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT,XR(C)::QAB1(B),XP(a)
      • Refutation
        • K(b);P-FLIGHT,XQ(D)
  • Actual
    • Q(B);
    • Vars
      • K(b);CHECK,P_SPINP(a),S_FLIGHT,XR(C)::PXR(c)=S
      • K(b);CHECK,OGATE,S_FLIGHT,XS(E)::P=S
      • R(c);SBLOCK,XS(E)::R1(C)
      • P(a);::S(E)
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