MESON Chess Problem Database

Problem Display
PID: 205564 (3B1k2/8/3K2Q1/3n4/8/8/8/8 w - - 0 1)

Lazard, Frederic

La Strategie, 1925

3B1k2/8/3K2Q1/3n4/8/8/8/8

#2

3 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Be7#
    • 1...Se3
      • 2.Be7#
    • 1...Sb4
      • 2.Be7#
    • 1...Sf4
      • 2.Be7#
    • 1...Sb6
      • 2.Be7#
    • 1...Sf6
      • 2.Be7#
    • 1...Sc7
      • 2.Be7#
    • 1...Se7
      • 2.Bxe7#
  • Tries
    • 1.Bh4?
      • 1...Sc3
        • 2.Be7#
      • 1...Se3
        • 2.Be7#
      • 1...Sb4
        • 2.Be7#
      • 1...Sf4
        • 2.Be7#
      • 1...Sb6
        • 2.Be7#
      • 1...Sc7
        • 2.Be7#
      • 1...Se7
        • 2.Bxe7#
      • 1...Sf6!
    • 1.Bf6?
      • 1...Sc3
        • 2.Be7#
      • 1...Se3
        • 2.Be7#
      • 1...Sb4
        • 2.Be7#
      • 1...Sf4
        • 2.Be7#
      • 1...Sb6
        • 2.Be7#
      • 1...Sc7
        • 2.Be7#
      • 1...Se7
        • 2.Bxe7#
      • 1...Sxf6!
    • 1.Qg7+?
      • 1...Ke8
        • 2.Qg8#
      • 1...Kxg7!
  • Keys
    • 1.Bg5!
      • threat
        • 2.Bh6#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • S(a);N_GUARD::B(C)
    • S(a);N_GUARD::B(C),XS(a)
  • Tries
    • Try
      • B(C);
      • Vars
        • S(a);N_GUARD::B(C)
        • S(a);N_GUARD::B(C),XS(a)
      • Refutation
        • S(a);
    • Try
      • B(C);
      • Vars
        • S(a);N_GUARD::B(C)
        • S(a);N_GUARD::B(C),XS(a)
      • Refutation
        • S(a);XB(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
  • Actual
    • B(C);
    • Threat
      • B(C)
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