MESON Chess Problem Database

Problem Display
PID: 12240 (3r4/1npr2N1/1p4Q1/p1kp1RK1/2P5/PnB3N1/1PR5/5B1b w - - 0 1)

Quack, Godfrey C

The Problemist, 1976

3r4/1npr2N1/1p4Q1/p1kp1RK1/2P5/PnB3N1/1PR5/5B1b

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Sxe4#
  • Keys
    • 1.cxd5!
      • threat
        • 2.Qc6#
      • 1...Rxd5
        • 2.Be5#
      • 1...Rxg7
        • 2.Bxg7#
      • 1...Bxd5
        • 2.Se4#
      • 1...Rd6
        • 2.Bf6#
      • 1...Sd4
        • 2.Bb4#
      • 1...Sd6
        • 2.Se6#
      • 1...c6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(F),XB(a)
  • Actual
    • P(G);XP(e)
    • Threat
      • QAR1(J)
    • Vars
      • R(i);P_PINR(H),P_SPINR(i),SBLOCK,XP(G)::R(C)+B(E)
      • R(i);OGATE,P_PINQ(J),XS(K)::R(C)+B(E),XR(i)
      • B(a);N_GUARD,P_SPINB(a),XP(G)::S(F)
      • R(i);SBLOCK::R(C)+B(E)
      • S(b);SBLOCK::R(C)+B(E),DCHECK
      • S(g);SBLOCK::S(K)
      • P(h);::QAR1(J),XP(h)
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Developed and maintained by Brian Stephenson.
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