MESON Chess Problem Database

Problem Display
PID: 6370 (3KBB2/1ppR1p2/R1qrkp1n/5n2/N1P3Q1/4bN2/2bp4/8 w - - 0 1)

Blake, Percy Francis

2nd Prize, BCF 001. Ty., 1929-1930

3KBB2/1ppR1p2/R1qrkp1n/5n2/N1P3Q1/4bN2/2bp4/8

#2

9 + 12

14869 British Championship Solving Ty. 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd7+
      • 2.Bxd7#
    • 1...Qxc4
      • 2.Qxc4#
    • 1...Rd3
      • 2.Qe4#
    • 1...Rd4
      • 2.Sc5#
    • 1...Rd5
      • 2.cxd5#
    • 1...Rxd7+
      • 2.Bxd7#
    • 1...Sxg4
      • 2.Bxf7#
    • 1...Sg8
      • 2.Bxf7#
  • Tries
    • 1.Rxd6+?
      • 1...Qxd6+
        • 2.Bd7#
      • 1...cxd6!
  • Keys
    • 1.Kc8!
      • threat
        • 2.Re7#
      • 1...Qxd7+
        • 2.Bxd7#
      • 1...Qxc4
        • 2.Qxc4#
      • 1...Rxd7
        • 2.Bxd7#
      • 1...Sxg4
        • 2.Bxf7#
      • 1...Rd3
        • 2.Qe4#
      • 1...Rd4
        • 2.Sc5#
      • 1...Rd5
        • 2.cxd5#
      • 1...Sg8
        • 2.Bxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(e);CHECK,OGATE,P_SPINR(f),XR(F)::B(H),XQ(e)
    • Q(e);OGATE,P_SPINR(f),XP(C)::QAB(D),XQ(e)
    • R(f);P_SPINQ(e),S_CUTB(a)::QAR2(D)
    • R(f);P_SPINQ(e),S_CUTB(c)::S(B)
    • R(f);OGATE,P_SPINQ(e)::P(C),XR(f)
    • R(f);CHECK,OGATE,P_SPINQ(e),XR(F)::B(H),XR(f)
    • S(i);N_GUARD,N_SPINS(d),XQ(D)::B(H),XP(l)
    • S(i);N_GUARD::B(H),XP(l)
  • Tries
    • Try
      • R(F);CHECK,N_SPINR(F),XR(f)
      • Vars
        • Q(e);CHECK,P_SPINQ(e),XR(F)::B(H)
      • Refutation
        • P(k);XR(F)
  • Actual
    • K(G);N_SPINR(F),P-FLIGHT
    • Threat
      • R1(F)
    • Vars
      • Q(e);CHECK,OGATE,P_SPINR(f),XR(F)::B(H),XQ(e)
      • Q(e);OGATE,P_SPINR(f),XP(C)::QAB(D),XQ(e)
      • R(f);OGATE,P_SPINQ(e),XR(F)::B(H),XR(f)
      • S(i);N_GUARD,N_SPINS(d),XQ(D)::B(H),XP(l)
      • R(f);P_SPINQ(e),S_CUTB(a)::QAR2(D)
      • R(f);P_SPINQ(e),S_CUTB(c)::S(B)
      • R(f);OGATE,P_SPINQ(e)::P(C),XR(f)
      • S(i);N_GUARD::B(H),XP(l)
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