MESON Chess Problem Database

Problem Display
PID: 187054 (1r2B1bK/3P1p2/R3nkp1/3PNpp1/6P1/B7/2Q5/8 w - - 0 1)

Rice, John Michael

The Problemist Supplement, 2018

1r2B1bK/3P1p2/R3nkp1/3PNpp1/6P1/B7/2Q5/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...fxg4
      • 2.Sxg4#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Qc3#
      • 1...fxg4
        • 2.Qf2#
      • 1...Rb4
        • 2.d8Q#
        • 2.d8B#
      • 1...Rb3
        • 2.d8Q#
        • 2.d8B#
      • 1...Rb6!
    • 1.Sc6?
      • threat
        • 2.Be7#
      • 1...Rxe8
        • 2.dxe8S#
      • 1...Sc5
        • 2.Qc3#
      • 1...Rb4!
  • Keys
    • 1.Sxg6!
      • threat
        • 2.Qxf5#
      • 1...Kxg6
        • 2.Rxe6#
      • 1...fxg4
        • 2.Be7#
      • 1...fxg6
        • 2.Qc3#
      • 1...f4
        • 2.Be7#
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);XP(C)::S(E),XP(a)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB(A)
      • Vars
        • P(a);OGATEB,XP(C)::QAR(A)
        • R(g);N_GUARD::P=Q
      • Refutation
        • R(g);N_SPINS(c)
    • Try
      • S(E);N_PINS(c)
      • Threat
        • B(B)
      • Vars
        • R(g);OGATE,XB(H)::PXR(g)=S
        • S(c);N_GUARD::QAB(A)
      • Refutation
        • R(g);
  • Actual
    • S(E);XP(e)
    • Threat
      • QAR1(A),XP(a)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(a),XS(E)::R(F),XS(c)
      • P(a);XP(C)::B(B)
      • P(f);XS(E)::QAB(A)
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