MESON Chess Problem Database

Problem Display
PID: 31166 (5kB1/3p3p/K3R2P/4P1r1/8/8/Q7/8 w - - 0 1)

Trcala, Stanislav

Nove parizske mody, 1899

5kB1/3p3p/K3R2P/4P1r1/8/8/Q7/8

#2

6 + 4

3437 Stanislav Trcala Sachovy odkaz 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg8
      • 2.Re8#
    • 1...Rxg8
      • 2.Qf2#
  • Tries
    • 1.Kb6?
      • threat
        • 2.Qa8#
      • 1...Kxg8
        • 2.Re8#
      • 1...Rxg8
        • 2.Qf2#
      • 1...dxe6!
    • 1.Kb7?
      • threat
        • 2.Qa8#
      • 1...Kxg8
        • 2.Re8#
      • 1...Rxg8
        • 2.Qf2#
      • 1...dxe6!
    • 1.Qb3?
      • threat
        • 2.Qb8#
      • 1...Kxg8
        • 2.Re8#
      • 1...Rxg8
        • 2.Qf3#
      • 1...dxe6!
    • 1.Qc4?
      • threat
        • 2.Qc8#
      • 1...Kxg8
        • 2.Re8#
      • 1...Rxg8
        • 2.Qf1#
        • 2.Qf4#
      • 1...dxe6!
    • 1.Qf2+?
      • 1...Kxg8
        • 2.Re8#
      • 1...Rf5!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qa8#
      • 1...Kxg8
        • 2.Re8#
      • 1...Rxg8
        • 2.Qf3#
      • 1...dxe6
        • 2.Qd8#

There are these versions: 129867

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT,XB(F)::QAB(A)+R(D),DCHECK
    • R(a);N_GUARD,SBLOCK,XB(F)::QAR(A)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • QAR(A)
      • Vars
        • K(d);P-FLIGHT,XB(F)::QAB(A)+R(D),DCHECK
        • R(a);N_GUARD,SBLOCK,XB(F)::QAR(A)
      • Refutation
        • P(b);XR(D)
    • Try
      • K(C);S_FLIGHT
      • Threat
        • QAR(A)
      • Vars
        • K(d);P-FLIGHT,XB(F)::QAB(A)+R(D),DCHECK
        • R(a);N_GUARD,SBLOCK,XB(F)::QAR(A)
      • Refutation
        • P(b);XR(D)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(d);P-FLIGHT,XB(F)::QAB(A)+R(D),DCHECK
        • R(a);N_GUARD,SBLOCK,XB(F)::QAR(A)
      • Refutation
        • P(b);XR(D)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(d);P-FLIGHT,XB(F)::QAB(A)+R(D),DCHECK
      • Refutation
        • P(b);XR(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);P-FLIGHT,XB(F)::R(D)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • K(d);P-FLIGHT,XB(F)::QAB(A)+R(D),DCHECK
      • R(a);N_GUARD,SBLOCK,XB(F)::QAR(A)
      • P(b);OGATE,XR(D)::QAR2(A)
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