MESON Chess Problem Database

Problem Display
PID: 134672 (1b6/8/8/3pp1p1/r4kP1/rQNb3K/5PPn/8 w - - 0 1)

Driver, John Edward

King-Farlow, Charles P

The Field, 1966

(First published on Thu Mar 10 1966)

1b6/8/8/3pp1p1/r4kP1/rQNb3K/5PPn/8

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sxd5#
    • 1...Be4
      • 2.Se2#
    • 1...Sf3
      • 2.g3#
    • 1...e4
      • 2.Qxb8#
  • Keys
    • 1.Qxd5!
      • threat
        • 2.g3#
      • 1...Sxg4
        • 2.Qf3#
      • 1...Re4
        • 2.Qf7#
      • 1...Bf1
        • 2.Qf7#
        • 2.Qd2#
      • 1...Be4
        • 2.Qd2#
      • 1...Sf1
        • 2.Qf3#
      • 1...e4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(d);SBLOCK::S(D),XP(f)
    • B(c);N_GUARD,SBLOCK::S(D)
    • S(a);SBLOCK::P(B)
    • P(g);OGATEB::QAB(C),XB(i)
  • Actual
    • Q(C);XP(f)
    • Threat
      • P(B)
    • Vars
      • S(a);N_GUARD,XP(F)::QAR1(C)
      • R(d);S_CUTB(c)::QAR(C)
      • B(c);OGATE,P_PINS(D)::QAB(C)
      • S(a);N_GUARD::QAR1(C)
      • P(g);OGATE::QAR1(C)
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