MESON Chess Problem Database

Problem Display
PID: 50528 (8/B6p/bP3P1Q/3Pp1P1/1NpPpR1K/4k3/2R1Np2/3B4 w - - 0 1)

Rice, John Michael

The Problemist, 1989

8/B6p/bP3P1Q/3Pp1P1/1NpPpR1K/4k3/2R1Np2/3B4

#2

13 + 7

5174 Chess Problem Spectrum 2003

SOLUTION

  • SOUND
  • Tries
    • 1.g6?
      • threat
        • 2.Rf5#
      • 1...exf4
        • 2.Qxf4#
      • 1...f1Q
        • 2.Rxf1#
      • 1...f1R
        • 2.Rxf1#
      • 1...hxg6!
    • 1.b7?
      • threat
        • 2.dxe5#
      • 1...exd4
        • 2.Bxd4#
      • 1...exf4!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Rxe4#
      • 1...Kxd4
        • 2.b7#
      • 1...Kxf4
        • 2.g6#
      • 1...exf4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(I);
      • Threat
        • QAB(L)+R(F)
      • Vars
        • P(e);OGATE,P_SPINP(e),XR(F)::QAB1(L),XP(e)
        • P(a);OGATE::QAB(L)+R(F),XQ(a)
        • P(a);OGATE::QAB(L)+R(F),XR(a)
      • Refutation
        • P(g);XP(I)
    • Try
      • P(J);
      • Threat
        • B(M)+P(E),XP(e)
      • Vars
        • P(e);OGATE,P_SPINP(e),XP(E)::B(M),XP(e)
      • Refutation
        • P(e);XR(F)
  • Actual
    • S(C);
    • Threat
      • R1(F),XP(d)
    • Vars
      • K(b);P_SPINP(d),S_FLIGHT,XP(E)::B(M)+P(J)
      • K(b);S_FLIGHT,XR(F)::QAB(L)+P(I)
      • P(e);SBLOCK,XR(F)::S(C)
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