MESON Chess Problem Database

Problem Display
PID: 74785 (1B2R3/5K2/n3N3/1Pp3Pp/R1b1k3/Q4NnP/2P3Bb/4rq1r w - - 0 1)

Gamage, Frederick

Chess Problem, 1945

1B2R3/5K2/n3N3/1Pp3Pp/R1b1k3/Q4NnP/2P3Bb/4rq1r

#2

12 + 10

5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Sf4#
    • 1...Kf5
      • 2.Sh4#
    • 1...Qxg2
      • 2.Qd3#
    • 1...Qd3
      • 2.Qxd3#
    • 1...Qg1
      • 2.Qd3#
    • 1...Qf2
      • 2.Qd3#
    • 1...Qxf3+
      • 2.Qxf3#
    • 1...Re2
      • 2.Qd3#
    • 1...Se2
      • 2.Qd3#
    • 1...Sf5
      • 2.Sd2#
  • Tries
    • 1.Rxc4+?
      • 1...Kf5
        • 2.Sh4#
        • 2.Sg7#
        • 2.Rf4#
      • 1...Qxc4
        • 2.Sd4#
        • 2.Sh4#
      • 1...Kd5!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qe5#
      • 1...Qxf3+
        • 2.Qxf3#
      • 1...Kd5
        • 2.Sf4#
      • 1...Kf5
        • 2.Sh4#
      • 1...Qxg2
        • 2.Qd3#
      • 1...Se2
        • 2.Qd3#
      • 1...Sf5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • K(g);N_SPINB(f),S_FLIGHT::S(I)
    • K(g);N_PINS(D),N_SPINB(f),P_PINS(I),S_FLIGHT::S(D)
    • Q(b);N_GUARD,N_PINS(D),P_PINS(I),XB(B)::QAB1(C)
    • Q(b);N_GUARD,N_PINS(D),P_PINS(I)::QAB1(C),XQ(b)
    • Q(b);N_GUARD,N_PINS(D),P_PINS(I)::QAB1(C)
    • Q(b);N_GUARD::QAB1(C)
    • Q(b);CHECK,OGATE,P_PINS(I),P_SPINQ(b),XS(D)::QAB1(C),XQ(b)
    • R(a);S_CUTQ(b)::QAB1(C)
    • S(e);S_CUTQ(b)::QAB1(C)
    • S(e);N_PINS(D),P_PINS(I),SBLOCK::B(B)+S(D),DCHECK
  • Tries
    • Try
      • R(F);CHECK,XB(f)
      • Refutation
        • K(g);S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • Q(b);CHECK,OGATE,P_PINS(I),P_SPINQ(b),XS(D)::QAB1(C),XQ(b)
      • K(g);N_SPINB(f),S_FLIGHT::S(I)
      • K(g);N_PINS(D),N_SPINB(f),P_PINS(I),S_FLIGHT::S(D)
      • Q(b);N_GUARD,N_PINS(D),P_PINS(I),XB(B)::QAB1(C)
      • S(e);S_CUTQ(b)::QAB1(C)
      • S(e);N_PINS(D),P_PINS(I),SBLOCK::B(B)+S(D),DCHECK
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