MESON Chess Problem Database

Problem Display
PID: 77062 (2Q5/bp1R1p2/q1b4K/1p6/1pkBNR2/8/1PB5/2n2n2 w - - 0 1)

Gamage, Frederick

Frederick Gamage (Prcic), 2004

2Q5/bp1R1p2/q1b4K/1p6/1pkBNR2/8/1PB5/2n2n2

#2

8 + 10

133 The Problemist Supplement 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.b3#
    • 1...Se2
      • 2.b3#
    • 1...Sd3
      • 2.b3#
    • 1...Sd2
      • 2.Sxd2#
    • 1...Sh2
      • 2.Sd2#
    • 1...Se3
      • 2.Sd2#
    • 1...Sg3
      • 2.Sd2#
    • 1...b6
      • 2.Qxc6#
  • Keys
    • 1.Bc5!
      • threat
        • 2.Rd4#
      • 1...Bxe4+
        • 2.Bb6#
      • 1...Bd5+
        • 2.Sd6#
      • 1...Bxd7+
        • 2.Sf6#
      • 1...Bxc5
        • 2.Sd2#
      • 1...Se2
        • 2.b3#
      • 1...Sb3
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • S(a);N_GUARD::P(A)
    • S(b);N_GUARD::S(D),XS(b)
    • S(b);N_GUARD::S(D)
    • P(i);N_GUARD,S_CUTB(h),S_CUTQ(f)::QAR2(H),XB(g)
  • Actual
    • B(C);N_PINB(g)
    • Threat
      • R1(G)
    • Vars
      • B(g);CHECK,OGATEB,P_SPINB(g),XS(D)::QAR(H)+B(C)
      • B(g);CHECK,SBLOCK::R(E)+S(D),DCHECK
      • B(g);CHECK,N_GUARD,XR(G)::R(E)+S(D)
      • B(h);SBLOCK,XB(C)::R(E)+S(D),DCHECK
      • S(a);N_GUARD::P(A)
      • S(a);N_GUARD,SBLOCK::B(B)
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