MESON Chess Problem Database

Problem Display
PID: 74778 (4Nn1B/3pp2b/R2rkPP1/q2n4/1br1Bp2/1Q3N1K/8/4R3 w - - 0 1)

Gamage, Frederick

2nd Prize, BCPS, 1944-1945

4Nn1B/3pp2b/R2rkPP1/q2n4/1br1Bp2/1Q3N1K/8/4R3

#2

10 + 11

5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Bd3#
    • 1...Sb6
      • 2.Sc7#
    • 1...Sxf6
      • 2.Sg7#
  • Tries
    • 1.Bxd5+?
      • 1...Kxd5
        • 2.Re5#
      • 1...Kf5!
    • 1.Qd3?
      • threat
        • 2.Bxd5#
        • 2.Bf5#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Bxe1
        • 2.Bf5#
      • 1...Bxg6
        • 2.Bxd5#
      • 1...Sxf6
        • 2.Sg7#
        • 2.Bd5#
        • 2.Bf5#
      • 1...Sxg6
        • 2.Bxd5#
      • 1...Rd4
        • 2.Bf5#
      • 1...Sc3
        • 2.Bd5#
        • 2.Bf5#
      • 1...Sb6
        • 2.Bd5#
        • 2.Bf5#
      • 1...Sc7
        • 2.Bd5#
        • 2.Bf5#
      • 1...Se3!
  • Keys
    • 1.f7!
      • threat
        • 2.Sg5#
      • 1...Rxe4
        • 2.Sd4#
      • 1...Rc3
        • 2.Bd3#
      • 1...Sc3
        • 2.Sd4#
      • 1...Se3
        • 2.Sd4#
      • 1...Sb6
        • 2.Sc7#
      • 1...Sf6
        • 2.Sg7#
      • 1...Sc7
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD,P_PINS(C),P_SPINS(e),S_CUTB(a)::R(A)+B(E)
    • S(e);N_GUARD,N_SPINR(f),P_SPINR(b),S_CUTQ(d)::S(I)
    • S(e);N_SPINR(f),P_SPINR(b),SBLOCK,XP(G)::S(I)
  • Tries
    • Try
      • B(E);CHECK,XS(e)
      • Vars
        • K(g);N_SPINR(f),P_SPINR(b),S_FLIGHT,XB(E)::R1(A)
      • Refutation
        • K(g);N_SPINR(f),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);N_SPINR(f),OGATE,P_SPINR(b),XB(E)::QAR2(B),XR(b)
        • B(a);XR(A)::B(E)
        • B(j);XP(H)::R(A)+B(E),DCHECK,XS(e)
        • S(k);XP(H)::R(A)+B(E),DCHECK,XS(e)
        • R(b);::R(A)+B(E),DCHECK
      • Refutation
        • S(e);
  • Actual
    • P(G);
    • Threat
      • S(C)
    • Vars
      • R(b);N_GUARD,N_SPINR(f),P_SPINR(b),P_SPINS(e),XB(E)::S(C)
      • R(b);N_GUARD,P_PINS(C),P_SPINS(e),S_CUTB(a)::R(A)+B(E)
      • S(e);N_SPINR(f),P_SPINR(b)::S(C)
      • S(e);N_GUARD,N_SPINR(f),P_SPINR(b),S_CUTQ(d)::S(I)
      • S(e);N_SPINR(f),P_SPINR(b),SBLOCK::S(I)
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