MESON Chess Problem Database

Problem Display
PID: 132378 (3bb3/3Pr1r1/2RN2p1/2ppk1B1/R4NP1/3P4/8/5K1B w - - 0 1)

Clark, Cecil Henry Douglas

The Field, 1956

(First published on Thu Nov 29 1956)

3bb3/3Pr1r1/2RN2p1/2ppk1B1/R4NP1/3P4/8/5K1B

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Sc4#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Bf6#
      • 1...Rxd7
        • 2.Re6#
      • 1...Re6
        • 2.Rxe6#
      • 1...Ref7
        • 2.Re6#
      • 1...c4
        • 2.d4#
      • 1...d4
        • 2.Rxc5#
      • 1...Rgf7!
    • 1.Sf7+?
      • 1...Rexf7
        • 2.Re6#
      • 1...Bxf7
        • 2.Bf6#
      • 1...Rgxf7!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Bf6#
      • 1...Rxd7
        • 2.Re6#
      • 1...Re6
        • 2.Rxe6#
      • 1...Ref7
        • 2.Re6#
      • 1...Rgf7
        • 2.Sxg6#
      • 1...c4
        • 2.d4#
      • 1...d4
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD,SBLOCK::S(I)
  • Tries
    • Try
      • S(I);
      • Threat
        • B(G)
      • Vars
        • R(e);N_GUARD,XP(J)::R1(H)
        • R(e);N_GUARD::R1(H),XR(e)
        • R(e);N_GUARD,P_PINS(E)::R1(H)
        • P(a);N_GUARD::P(C)
        • P(b);OGATEB::R(H),XP(a)
      • Refutation
        • R(f);P_PINS(E)
    • Try
      • S(I);CHECK
      • Vars
        • R(e);P_PINS(E),XS(I)::R1(H)
        • B(h);XS(I)::B(G)
      • Refutation
        • R(f);P_PINS(E),XS(I)
  • Actual
    • S(I);
    • Threat
      • B(G)
    • Vars
      • R(e);N_GUARD,XP(J)::R1(H)
      • R(e);N_GUARD::R1(H),XR(e)
      • R(e);N_GUARD::R1(H)
      • R(f);N_GUARD,S_CUTB(h)::S(E),XP(d)
      • P(a);N_GUARD::P(C)
      • P(b);OGATEB::R(H),XP(a)
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