MESON Chess Problem Database

Problem Display
PID: 5981 (7n/4Q3/8/4pk1K/8/3P2P1/8/8 w - - 0 1)

Lazard, Frederic

Bulletin de la FFE, 1926

7n/4Q3/8/4pk1K/8/3P2P1/8/8

#2

4 + 3

6315 Mes problemes et etudes d'echecs (Lazard) 1929

SOLUTION

  • SOUND
  • Sets
    • 1...Sg6
      • 2.Qf7#
    • 1...Sf7
      • 2.Qxf7#
    • 1...e4
      • 2.dxe4#
  • Tries
    • 1.Qf8+?
      • 1...Sf7
        • 2.Qxf7#
      • 1...Ke6!
  • Keys
    • 1.Qd6!
      • 1...Sg6
        • 2.Qxg6#
      • 1...Sf7
        • 2.Qg6#
      • 1...e4
        • 2.g4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAR2(D)
    • S(c);N_GUARD::QAR2(D),XS(c)
    • P(a);OGATE::P(A),XP(a)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR2(D),XS(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • S(c);N_GUARD::QAB1(D),XS(c)
      • S(c);N_GUARD::QAB1(D)
      • P(a);::P(B)
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