MESON Chess Problem Database

Problem Display
PID: 16692 (2KB4/1p6/bR6/n3Nk2/R7/2Q1nr1P/2r5/1B6 w - - 0 1)

Gamage, Frederick

1st Prize, Christian Science Monitor, 1942

2KB4/1p6/bR6/n3Nk2/R7/2Q1nr1P/2r5/1B6

#2

8 + 7

5064 100 Years of the American Two-move Chess Problem 1962
3098 FIDE Album (1914-1944) (I) 1971
5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.hxg4#
  • Tries
    • 1.Sf7?
      • threat
        • 2.Sh6#
        • 2.Rf6#
      • 1...Rxh3
        • 2.Rf6#
      • 1...Bc4
        • 2.Qe5#
      • 1...Sec4
        • 2.Qxf3#
      • 1...Sc6
        • 2.Qf6#
      • 1...Sg4
        • 2.hxg4#
      • 1...Sd5
        • 2.Sh6#
      • 1...Sac4!
    • 1.Bxc2+?
      • 1...Bd3
        • 2.Bxd3#
      • 1...Sxc2!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Sh4#
      • 1...Rxh3
        • 2.Rf4#
      • 1...Bc4
        • 2.Qe5#
      • 1...Sec4
        • 2.Qxf3#
      • 1...Sac4
        • 2.Qd3#
      • 1...Sc6
        • 2.Qf6#
      • 1...Rf4
        • 2.Rxf4#
      • 1...Sg2
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • S(b);OGATE::P(C),XS(b)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XP(C)::R1(F)
        • B(f);N_PINQ(B)::QAR1(B)
        • S(b);N_PINQ(B)::QAR2(B),XR(c)
        • S(d);N_PINQ(B)::QAR1(B)
        • S(b);OGATE::P(C),XS(b)
        • S(b);::S(E)
      • Refutation
        • S(d);N_PINQ(B)
    • Try
      • B(A);CHECK,N_SPINQ(B),XR(a)
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::B(A),XB(f)
      • Refutation
        • S(b);XB(A)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • R(c);N_GUARD,XP(C)::R1(D)
      • B(f);N_PINQ(B)::QAR1(B)
      • S(b);N_PINQ(B)::QAR2(B),XR(c)
      • S(d);N_PINQ(B)::QAB(B)
      • S(d);N_PINQ(B)::QAR1(B)
      • R(c);N_GUARD::R1(D),XR(c)
      • S(b);N_GUARD::QAR(B)
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