MESON Chess Problem Database

Problem Display
PID: 46365 (7b/4rp2/2Bnkp2/r2NN2K/p7/8/Q3p2B/8 w - - 0 1)

Gamage, Frederick

Los Angeles Times, 1946

7b/4rp2/2Bnkp2/r2NN2K/p7/8/Q3p2B/8

#2

6 + 9

145 StrateGems 2003
5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Se3#
      • 2.Sxe7#
    • 1...Rd7
      • 2.Bxd7#
    • 1...Re8
      • 2.Bd7#
  • Tries
    • 1.Se3+?
      • 1...Rd5
        • 2.Bxd5#
        • 2.Qxd5#
      • 1...Sc4!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sd4#
      • 1...Rxd5+
        • 2.Qxd5#
      • 1...Kf5
        • 2.Sxe7#
      • 1...Sb5
        • 2.Se3#
      • 1...Sf5
        • 2.Sc7#
      • 1...f5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(g);N_GUARD::B(F),XR(g)
    • R(g);N_GUARD::B(F)
  • Tries
    • Try
      • S(C);CHECK,P_SPINS(D)
      • Refutation
        • S(d);P_SPINS(d)
  • Actual
    • S(D);P_SPINS(C)
    • Threat
      • S(D)
    • Vars
      • R(c);CHECK,OGATE,P_SPINR(c),XS(C)::QAB1(A),XR(c)
      • K(e);N_PINS(C),S_FLIGHT::S(C),XR(g)
      • S(d);N_PINS(C)::QAB(A)+S(C)
      • S(d);N_PINS(C),SBLOCK::QAB(A)+S(C),DCHECK
      • P(f);N_GUARD,N_PINS(C),SBLOCK::S(D)
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