MESON Chess Problem Database

Problem Display
PID: 51256 (Q2Nnr2/R1bk2p1/5p2/4RP2/6p1/6K1/8/7B w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

Manchester Guardian, 1955

Q2Nnr2/R1bk2p1/5p2/4RP2/6p1/6K1/8/7B

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qd5#
    • 1...Sd6
      • 2.Bc6#
  • Tries
    • 1.Sf7?
      • threat
        • 2.Bc6#
        • 2.Qd8#
      • 1...fxe5
        • 2.Qd8#
      • 1...Sd6
        • 2.Bc6#
      • 1...Rxf7!
    • 1.Qc6+?
      • 1...Kc8
        • 2.Ra8#
      • 1...Kxd8!
    • 1.Qc8+?
      • 1...Kd6
        • 2.Qe6#
      • 1...Kxc8!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Qd8#
      • 1...Kd6
        • 2.Rd5#
      • 1...Sd6
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(d);N_PINR(C),N_SPINB(c),P-FLIGHT::QAR1(F)
    • S(f);N_PINR(C),SBLOCK::B(A)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);XR(C)::QAR1(F)
        • S(f);N_PINR(C)::B(A)
      • Refutation
        • R(g);XS(G)
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);S_FLIGHT::R(E)
      • Refutation
        • K(d);N_SPINB(c),P-FLIGHT,XS(G)
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);N_PINR(C),N_SPINB(c),OGATE,P-FLIGHT::QAR1(F)
      • Refutation
        • K(d);N_SPINB(c),S_FLIGHT,XQ(F)
  • Actual
    • S(G);
    • Threat
      • QAR1(F)
    • Vars
      • K(d);N_PINR(C),N_SPINB(c),P-FLIGHT::R1(C)
      • S(f);N_PINR(C),SBLOCK::R1(C)
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