MESON Chess Problem Database

Problem Display
PID: 158226 (3KB1bQ/3n1pP1/4P1kp/p1pR2p1/qp4P1/8/8/8 w - - 0 1)

Rice, John Michael

British Chess Magazine, 1999

3KB1bQ/3n1pP1/4P1kp/p1pR2p1/qp4P1/8/8/8

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qxh6#
    • 1...Sf8
      • 2.gxf8S#
  • Tries
    • 1.Bxf7+?
      • 1...Kf6
        • 2.Rf5#
        • 2.Qxh6#
      • 1...Bxf7!
  • Keys
    • 1.exf7!
      • threat
        • 2.fxg8S#
      • 1...Kf6
        • 2.Qxh6#
      • 1...Bxf7
        • 2.g8Q#
        • 2.g8R#
      • 1...Bh7
        • 2.f8Q#
        • 2.f8R#
      • 1...Se5
        • 2.Rd6#
      • 1...Sb6
        • 2.Rd6#
      • 1...Sf6
        • 2.f8S#
      • 1...Sb8
        • 2.Rd6#
      • 1...Sf8
        • 2.gxf8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(f);N_SPINP(i),P-FLIGHT::QAR2(G),XP(g)
    • S(h);OGATE::PXS(h)=S
  • Tries
    • Try
      • B(F);CHECK,XP(i)
      • Refutation
        • B(j);XB(F)
  • Actual
    • P(C);XP(i)
    • Threat
      • PXB(j)=S
    • Vars
      • K(f);P-FLIGHT::QAR2(G),XP(g)
      • B(j);OGATE,P_SPINB(j),XP(C)::P=Q
      • B(j);N_GUARD::P=Q
      • S(h);N_GUARD::R(B)
      • S(h);SBLOCK::P=S
      • S(h);OGATE::PXS(h)=S
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