MESON Chess Problem Database

Problem Display
PID: 75198 (1BBR2Qn/q2N1pK1/1P5R/1P1k4/3NnP2/1PP5/8/b6b w - - 0 1)

Gamage, Frederick

Chess Correspondent TT, 1946

1BBR2Qn/q2N1pK1/1P5R/1P1k4/3NnP2/1PP5/8/b6b

#2

13 + 7

5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Bb7#
    • 1...Qa3
      • 2.Bb7#
    • 1...Qa4
      • 2.Bb7#
    • 1...Qa5
      • 2.Bb7#
    • 1...Qb7
      • 2.Bxb7#
    • 1...Sc5
      • 2.Sf6#
    • 1...Sg6
      • 2.Qxf7#
  • Tries
    • 1.Sc5+?
      • 1...Kxc5
        • 2.Rc6#
      • 1...Sd6
        • 2.Rh5#
      • 1...Qd7!
    • 1.Rc6?
      • threat
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Qxd7!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sf6#
      • 1...Qxd7
        • 2.Bb7#
      • 1...fxe6
        • 2.Qxe6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...f5
        • 2.Sc7#
      • 1...f6
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • Q(e);N_GUARD::B(K)
    • Q(e);N_GUARD::B(K),XQ(e)
    • S(c);SBLOCK::R(L)+S(H),DCHECK
    • S(g);N_GUARD::QAB(M),XP(f)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(d);N_SPINP(f),P-FLIGHT,XS(H)::R1(G)
        • S(c);P_SPINS(c)::R(G)
      • Refutation
        • Q(e);P_SPINQ(e)
    • Try
      • R(G);
      • Threat
        • R(L)+S(H),DCHECK
      • Vars
        • S(c);::R(L)+S(H),DCHECK,XS(c)
      • Refutation
        • Q(e);P_SPINQ(e),XS(H)
  • Actual
    • S(C);N_PINP(f),P_SPINP(B)
    • Threat
      • R(L)+S(H),DCHECK
    • Vars
      • Q(e);N_GUARD,P_SPINQ(e),XS(H)::B(K)
      • P(f);OGATE,P_PINS(H),P_SPINP(f),XS(C)::QAB1(M),XP(f)
      • S(c);N_PINP(B)::R(L)+S(H),DCHECK,XS(c)
      • P(f);P_PINS(H)::QAB(M)+S(C),DCHECK
      • P(f);N_PINP(B),P_PINS(H)::P(B)
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