MESON Chess Problem Database

Problem Display
PID: 11564 (b7/1nPPk3/1K6/5Q2/8/8/8/8 w - - 0 1)

Lazard, Frederic

2nd HM., Magyar Sakkvilag, 1939

b7/1nPPk3/1K6/5Q2/8/8/8/8

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.c8S#
    • 1...Sa5
      • 2.d8Q#
    • 1...Sc5
      • 2.d8Q#
    • 1...Sd6
      • 2.d8Q#
    • 1...Sd8
      • 2.c8S#
  • Tries
    • 1.Ka7?
      • 1...Sa5
        • 2.d8Q#
      • 1...Sc5
        • 2.d8Q#
      • 1...Sd6
        • 2.d8Q#
      • 1...Sd8
        • 2.c8S#
      • 1...Kd6!
  • Keys
    • 1.c8Q!
      • threat
        • 2.Qcf8#
      • 1...Kd6
        • 2.Qcf8#
      • 1...Sd8
        • 2.Qcc5#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • K(b);S_FLIGHT::P=S
    • S(a);N_GUARD::P=Q
    • S(a);SBLOCK::P=S
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • S(a);N_GUARD::P=Q
        • S(a);SBLOCK::P=S
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(b);S_FLIGHT::QAB(C)
      • S(a);N_GUARD,SBLOCK::QAB(C)
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