MESON Chess Problem Database

Problem Display
PID: 206708 (3N4/1p1k2K1/1Q1N4/8/8/8/8/8 w - - 0 1)

Lazard, Frederic

L'Eclaireur du Soir, 1925

3N4/1p1k2K1/1Q1N4/8/8/8/8/8

#2

4 + 2

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke7
      • 2.Qc7#
  • Tries
    • 1.S6xb7?
      • 1...Ke7
        • 2.Qe6#
      • 1...Ke8
        • 2.Qe6#
      • 1...Kc8!
  • Keys
    • 1.S6f7!
      • 1...Ke7
        • 2.Qe6#
      • 1...Kc8
        • 2.Qxb7#
      • 1...Ke8
        • 2.Qe6#

This anticipates 110802(1935)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • S(B);XP(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(b);P-FLIGHT::QAR1(A)
      • K(b);S_FLIGHT::QAB1(A),XP(a)
      • K(b);S_FLIGHT::QAR2(A)
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