MESON Chess Problem Database

Problem Display
PID: 146014 (6Bn/p1B1pr2/2R5/QK1k2bR/1p1p4/5P2/6r1/8 w - - 0 1)

Coombes, TA

British Chess Magazine, 1945

6Bn/p1B1pr2/2R5/QK1k2bR/1p1p4/5P2/6r1/8

#2

7 + 9

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...a6+
      • 2.Kb6#
    • 1...e5
      • 2.Rd6#
    • 1...e6
      • 2.Rc5#
  • Tries
    • 1.Bf4?
      • threat
        • 2.Qd8#
      • 1...a6+
        • 2.Kb6#
      • 1...e6
        • 2.Rc5#
        • 2.Rd6#
      • 1...e5!
    • 1.Bxf7+?
      • 1...e6
        • 2.Bxe6#
        • 2.Rc5#
      • 1...Sxf7!
    • 1.Rxg5+?
      • 1...e5
        • 2.Rxe5#
        • 2.Rd6#
      • 1...Rxg5!
    • 1.Qa2+?
      • 1...b3
        • 2.Qxb3#
      • 1...Rxa2!
  • Keys
    • 1.Bb8!
      • threat
        • 2.Qd8#
      • 1...a6+
        • 2.Kb6#
      • 1...e5
        • 2.Rd6#
      • 1...e6
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(f);CHECK::QAR(B)+K(C)
    • P(g);N_GUARD,N_SPINB(e),SBLOCK::R1(E)
    • P(g);N_SPINR(h),SBLOCK::R1(E)
  • Tries
    • Try
      • B(F);
      • Threat
        • QAR(B)
      • Vars
        • P(f);CHECK::QAR(B)+K(C)
      • Refutation
        • P(g);N_SPINB(e)
    • Try
      • B(G);CHECK,XR(h)
      • Refutation
        • S(i);XB(G)
    • Try
      • R(D);CHECK,XB(e)
      • Refutation
        • R(a);XR(D)
    • Try
      • Q(B);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAB(B),XP(b)
      • Refutation
        • R(a);XQ(B)
  • Actual
    • B(F);
    • Threat
      • QAR(B)
    • Vars
      • P(f);CHECK::QAR(B)+K(C)
      • P(g);N_GUARD,N_SPINB(e),SBLOCK::R1(E)
      • P(g);N_SPINR(h),SBLOCK::R1(E)
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