MESON Chess Problem Database

Problem Display
PID: 205565 (4R3/4p3/4k1K1/8/8/8/3Q4/8 w - - 0 1)

Lazard, Frederic

La Strategie, 1925

4R3/4p3/4k1K1/8/8/8/3Q4/8

#2

3 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Rxe7#
  • Tries
    • 1.Kg5?
      • 1...Ke5
        • 2.Rxe7#
      • 1...Kf7!
  • Keys
    • 1.Rd8!
      • 1...Ke5
        • 2.Qe3#

FEATURES

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