MESON Chess Problem Database

Problem Display
PID: 62675 (K7/2R5/2p5/p1kpN3/Pn6/1R3B2/6QB/8 w - - 0 1)

Bridgwater, Ralph Herbert

Chess, 1944

K7/2R5/2p5/p1kpN3/Pn6/1R3B2/6QB/8

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qg1#
      • 2.Qf2#
    • 1...Kb6
      • 2.Rxc6#
  • Tries
    • 1.Sd7+?
      • 1...Kd4
        • 2.Qg4#
      • 1...Kc4!
    • 1.Rxc6+?
      • 1...Kd4
        • 2.Qg1#
        • 2.Qb2#
        • 2.Qf2#
        • 2.Qg4#
      • 1...Sxc6!
    • 1.Qg4?
      • threat
        • 2.Sd7#
      • 1...Kb6
        • 2.Rxc6#
      • 1...Kd6
        • 2.Sd3#
      • 1...d4!
  • Keys
    • 1.Qg8!
      • 1...Kd4
        • 2.Qg1#
      • 1...Kb6
        • 2.Rxc6#
      • 1...Kd6
        • 2.Sd3#
      • 1...Sa2
        • 2.Qxd5#
      • 1...Sc2
        • 2.Qxd5#
      • 1...Sd3
        • 2.Qxd5#
      • 1...Sa6
        • 2.Qxd5#
      • 1...d4
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINP(e),P_SPINS(a),S_FLIGHT::R1(G),XP(e)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);N_SPINP(e),S_FLIGHT::QAR(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(G);CHECK,XP(e)
      • Refutation
        • S(a);XR(G)
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • K(c);N_SPINP(e),P_SPINS(a),S_FLIGHT::R1(G),XP(e)
        • K(c);N_SPINP(e),S_FLIGHT::B(B)+S(F)
      • Refutation
        • P(d);
  • Actual
    • Q(A);
    • Vars
      • K(c);N_SPINP(e),S_FLIGHT::QAB(A)
      • K(c);N_SPINP(e),P_SPINS(a),S_FLIGHT::R1(G),XP(e)
      • K(c);N_SPINP(e),S_FLIGHT::B(B)+S(F)
      • S(a);N_GUARD::QAR1(A),XP(d)
      • P(d);SBLOCK::S(F)
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