MESON Chess Problem Database

Problem Display
PID: 16555 (N4R2/2B4N/2PnkP2/7R/8/8/b7/4K2B w - - 0 1)

Walters, S

Chess, 1941

N4R2/2B4N/2PnkP2/7R/8/8/b7/4K2B

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Bd5#
    • 1...Bd5
      • 2.Bxd5#
    • 1...Sc4
      • 2.Bd5#
    • 1...Se4
      • 2.Re5#
    • 1...Sb5
      • 2.Re5#
    • 1...Sf5
      • 2.Sg5#
    • 1...Sb7
      • 2.Re5#
    • 1...Sf7
      • 2.Re8#
    • 1...Sc8
      • 2.Re5#
    • 1...Se8
      • 2.Re5#
  • Tries
    • 1.Rc5?
      • threat
        • 2.Sg5#
      • 1...Se4
        • 2.Re5#
      • 1...Sf7
        • 2.Re8#
      • 1...Bd5!
    • 1.Rd5?
      • threat
        • 2.Sg5#
      • 1...Se4
        • 2.Re5#
      • 1...Sf7
        • 2.Re8#
      • 1...Bxd5!
  • Keys
    • 1.Bb8!
      • threat
        • 2.Sc7#
      • 1...Sc4
        • 2.Bd5#
      • 1...Se4
        • 2.Re5#
      • 1...Sb5
        • 2.Re5#
      • 1...Sf5
        • 2.Sg5#
      • 1...Sb7
        • 2.Re5#
      • 1...Sf7
        • 2.Re8#
      • 1...Sc8
        • 2.Re5#
      • 1...Se8
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::B(B)
    • B(a);N_GUARD::B(B),XB(a)
    • S(b);S_CUTB(a)::B(B)
    • S(b);::R1(C)
    • S(b);SBLOCK::S(G)
    • S(b);N_GUARD,SBLOCK::R(I)
  • Tries
    • Try
      • R(C);
      • Threat
        • S(G)
      • Vars
        • S(b);::R1(C)
        • S(b);N_GUARD,SBLOCK::R(I)
      • Refutation
        • B(a);
    • Try
      • R(C);
      • Threat
        • S(G)
      • Vars
        • S(b);::R1(C)
        • S(b);N_GUARD,SBLOCK::R(I)
      • Refutation
        • B(a);XR(C)
  • Actual
    • B(F);
    • Threat
      • S(H)
    • Vars
      • S(b);S_CUTB(a)::B(B)
      • S(b);::R1(C)
      • S(b);SBLOCK::S(G)
      • S(b);N_GUARD,SBLOCK::R(I)
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