MESON Chess Problem Database

Problem Display
PID: 8038 (K1Q5/2p5/1pB2r2/1Pk2N2/4R3/8/8/8 w - - 0 1)

Rice, John Michael

Chess Problems for Solving, 1995

K1Q5/2p5/1pB2r2/1Pk2N2/4R3/8/8/8

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Rf8
      • 2.Qxf8#
  • Tries
    • 1.Qg8?
      • threat
        • 2.Rc4#
        • 2.Qc4#
        • 2.Qd5#
        • 2.Qg1#
      • 1...Rf8+
        • 2.Qxf8#
      • 1...Rxc6
        • 2.Qc4#
      • 1...Rd6
        • 2.Rc4#
        • 2.Qc4#
      • 1...Re6
        • 2.Qg1#
      • 1...Rg6
        • 2.Rc4#
        • 2.Qc4#
        • 2.Qd5#
      • 1...Rf7
        • 2.Qg1#
      • 1...Rxf5!
  • Keys
    • 1.Qh8!
      • 1...Rf8+
        • 2.Qxf8#
      • 1...Rxf5
        • 2.Qd4#
      • 1...Rxc6
        • 2.Qe5#
      • 1...Rd6
        • 2.Qc3#
      • 1...Re6
        • 2.Qc3#
        • 2.Qd4#
      • 1...Rg6
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Rh6
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Rf7
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,P_PINQ(F)::QAB(F),XR(c)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(4)
      • Vars
        • R(c);CHECK,N_GUARD::QAB(F),XR(c)
        • R(c);XB(D)::QAR1(F)
        • R(c);::QAB(F)
      • Refutation
        • R(c);XS(C)
  • Actual
    • Q(F);
    • Vars
      • R(c);CHECK,N_GUARD::QAB(F),XR(c)
      • R(c);OGATE,XS(C)::QAB1(F)
      • R(c);OGATE,XB(D)::QAR2(F)
      • R(c);OGATE::QAR2(F)
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