MESON Chess Problem Database

Problem Display
PID: 16501 (2bR1B2/1ppq4/1p3Q1b/NRnkPN2/4pnK1/1p6/4p3/8 w - - 0 1)

Clark, Cecil Henry Douglas

Chess, 1941

2bR1B2/1ppq4/1p3Q1b/NRnkPN2/4pnK1/1p6/4p3/8

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...bxa5
      • 2.Rxc5#
  • Tries
    • 1.Qc6+?
      • 1...Kxe5
        • 2.Sc4#
      • 1...bxc6!
    • 1.Qf7+?
      • 1...Kxe5
        • 2.Sc4#
      • 1...Se6!
  • Keys
    • 1.Rb4!
      • threat
        • 2.Rd4#
      • 1...Sfe6
        • 2.Se7#
      • 1...Sce6
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(g);N_GUARD,XS(B)::R1(C),XS(e)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(f);N_SPINQ(k),P-FLIGHT,XP(D)::S(B)
      • Refutation
        • P(i);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(f);N_SPINQ(k),P-FLIGHT,XP(D)::S(B)
      • Refutation
        • S(d);N_PINS(E)
  • Actual
    • R(C);N_PINS(e)
    • Threat
      • R1(C)
    • Vars
      • S(d);N_PINS(E)::S(E)
      • S(e);N_PINS(E)::S(E)
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