MESON Chess Problem Database

Problem Display
PID: 18525 (4B1N1/4nqr1/r3R3/R4npk/3pQB1P/4p1pP/4P1N1/5K2 w - - 0 1)

Rice, John Michael

1st Prize, 02. McWilliam U-21 Ty., 1955

4B1N1/4nqr1/r3R3/R4npk/3pQB1P/4p1pP/4P1N1/5K2

#2

11 + 10

3174 The Two-move Chess Problem Tradition and Development 1966
5174 Chess Problem Spectrum 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Rh6#
      • 2.Qf3#
    • 1...Sh6
      • 2.Sf6#
  • Tries
    • 1.Bxg5?
      • threat
        • 2.Sf4#
        • 2.Qf3#
        • 2.Qg4#
      • 1...Sxh4+
        • 2.Sf4#
        • 2.Sf6#
      • 1...Sd6+
        • 2.Sf4#
        • 2.Sf6#
        • 2.Qf3#
      • 1...Sh6+
        • 2.Sf4#
        • 2.Sf6#
      • 1...Rxe6
        • 2.Sf4#
      • 1...Sd5
        • 2.Qf3#
        • 2.Qg4#
      • 1...Sg6
        • 2.Qf3#
        • 2.Qg4#
      • 1...Rxg5!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qg4#
      • 1...Sxh4+
        • 2.Sf4#
      • 1...Sxd6+
        • 2.Qf3#
      • 1...Sh6+
        • 2.Sf6#
      • 1...gxh4
        • 2.Qxh4#
      • 1...g4
        • 2.Rh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(d);P_PINB(F),P_SPINP(e),SBLOCK::S(K)
  • Tries
    • Try
      • B(F);XP(e)
      • Threat
        • DUALS(3)
      • Vars
        • R(g);XR(I)::S(C)
      • Refutation
        • R(j);XB(F)
  • Actual
    • B(F);
    • Threat
      • QAB1(E)
    • Vars
      • S(d);CHECK,P_SPINP(e),SBLOCK,XP(G)::S(C)
      • S(d);CHECK,P_SPINP(e),XB(F)::QAB(E)
      • S(d);CHECK,P_SPINP(e),SBLOCK::S(K)
      • P(e);OGATE,P_SPINS(d),XP(G)::QAR1(E),XP(e)
      • P(e);P_SPINS(d)::R1(I)
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Developed and maintained by Brian Stephenson.
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