MESON Chess Problem Database

Problem Display
PID: 268551 (K4BN1/pPp1R3/3k3b/R2b1P2/2r5/2n5/3Q4/3r2qB w - - 0 1)

McClelland, David C

British Chess Magazine, 1934

K4BN1/pPp1R3/3k3b/R2b1P2/2r5/2n5/3Q4/3r2qB

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Ra6#
    • 1...c6
      • 2.b8Q#
      • 2.b8B#
  • Tries
    • 1.Rxd5+?
      • 1...Kc6
        • 2.Re6#
      • 1...Sxd5!
    • 1.Qxh6+?
      • 1...Be6
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
        • 2.Qxe6#
      • 1...Qg6!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Re6#
      • 1...Kc6
        • 2.Re6#
      • 1...c5
        • 2.Ra6#
      • 1...c6
        • 2.Se8#
        • 2.b8Q#
        • 2.b8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(i);N_GUARD,SBLOCK,S_CUTQ(b),S_CUTR(d)::R(C)
    • P(i);N_PINP(E),SBLOCK::P=Q
  • Tries
    • Try
      • R(C);CHECK,N_SPINP(E),XB(e)
      • Vars
        • K(f);P-FLIGHT::R(F)
      • Refutation
        • S(c);P_SPINS(c),XR(C)
    • Try
      • Q(B);CHECK,N_PINB(e),XB(g)
      • Refutation
        • Q(b);P_SPINQ(b)
  • Actual
    • S(I);
    • Threat
      • B(H)+R(F),DCHECK
    • Vars
      • K(f);N_PINP(E),P-FLIGHT::R(F)
      • P(i);N_GUARD,SBLOCK,S_CUTQ(b),S_CUTR(d)::R(C)
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