MESON Chess Problem Database

Problem Display
PID: 79886 (3R4/8/1R6/3bP3/2Pk4/1P6/1NB5/QN1K4 w - - 0 1)

Murashev, Pavel Aleksandrovich

3rd HM., Einat-Comay-50 JT, 2008

3R4/8/1R6/3bP3/2Pk4/1P6/1NB5/QN1K4

#2

10 + 2

721 Variantim 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Sa4#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Sa4#
        • 2.Rxd5#
      • 1...Kc5
        • 2.Sa4#
      • 1...Kxe5!
    • 1.Ke2?
      • threat
        • 2.Sa4#
        • 2.Rxd5#
      • 1...Kc5
        • 2.Sa4#
      • 1...Kxe5!
    • 1.Bg6?
      • 1...Kc5
        • 2.Sa4#
      • 1...Kxe5
        • 2.Sd3#
      • 1...Ke3!
    • 1.Bh7?
      • 1...Kc5
        • 2.Sa4#
      • 1...Kxe5
        • 2.Sd3#
      • 1...Ke3!
    • 1.Re6?
      • threat
        • 2.Qa7#
      • 1...Kc5
        • 2.Sd3#
      • 1...Ke3!
    • 1.Qa7?
      • threat
        • 2.Re6#
      • 1...Ke3
        • 2.Rf6#
      • 1...Kc5
        • 2.Rxd5#
      • 1...Kxe5!
  • Keys
    • 1.Rf6!
      • 1...Ke3
        • 2.Qa7#
      • 1...Kc5
        • 2.Sd3#
      • 1...Kxe5
        • 2.Sa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINB(b),S_FLIGHT::S(D)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::S(D)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT,XP(H)
    • Try
      • K(C);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::S(D)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT,XP(H)
    • Try
      • B(E);
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::S(D)
        • K(a);N_SPINB(b),S_FLIGHT,XP(H)::QAB(A)+S(D),DCHECK
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::S(D)
        • K(a);N_SPINB(b),S_FLIGHT,XP(H)::QAB(A)+S(D),DCHECK
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
    • Try
      • R(I);
      • Threat
        • QAB(A)
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::S(D)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(I)
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::QAB(A)+R(I)
        • K(a);N_SPINB(b),S_FLIGHT::R1(J),XB(b)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT,XP(H)
  • Actual
    • R(I);
    • Vars
      • K(a);N_SPINB(b),S_FLIGHT::QAB(A)
      • K(a);N_SPINB(b),S_FLIGHT::S(D)
      • K(a);N_SPINB(b),S_FLIGHT,XP(H)::QAB(A)+S(D)
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