MESON Chess Problem Database

Problem Display
PID: 32582 (4B2K/b7/2Np4/2Nk1bP1/3Pp3/2R1R2p/5nQ1/8 w - - 0 1)

Weatherstone, W

Huddersfield College Magazine, 1877

4B2K/b7/2Np4/2Nk1bP1/3Pp3/2R1R2p/5nQ1/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qa2#
    • 1...Sh1
      • 2.Qa2#
    • 1...Sd3
      • 2.Qa2#
    • 1...Sg4
      • 2.Qa2#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sf4#
      • 1...Ke6
        • 2.Sf4#
      • 1...Sxd3
        • 2.Qa2#
      • 1...Bxd4+!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Sf6#
      • 1...Ke6
        • 2.Sc5#
      • 1...Bxe4
        • 2.Bf7#
      • 1...Sxe4
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(a);OGATE::QAB(A)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • K(d);S_FLIGHT::S(E)
        • S(a);OGATE,XS(E)::QAB(A)
      • Refutation
        • B(g);CHECK,XP(D)
  • Actual
    • S(E);XP(c)
    • Threat
      • QAB(A)+S(E),DCHECK
    • Vars
      • K(d);S_FLIGHT::R(C)+S(E),DCHECK
      • B(e);N_GUARD,P_SPINB(e),XS(E)::B(H)
      • S(a);OGATE,P_SPINS(a),XS(E)::QAB(A)
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