MESON Chess Problem Database

Problem Display
PID: 11562 (6n1/2K1kbBP/3Np2p/4P2p/7P/8/8/8 w - - 0 1)

Lazard, Frederic

1st Comm., Magyar Sakkvilag, 1939

6n1/2K1kbBP/3Np2p/4P2p/7P/8/8/8

#2

6 + 6

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Bg6
      • 2.hxg8S#
    • 1...Be8
      • 2.hxg8S#
    • 1...Sf6
      • 2.exf6#
  • Tries
    • 1.Kc8?
      • 1...Bg6
        • 2.hxg8S#
      • 1...Be8
        • 2.hxg8S#
      • 1...Sf6!
    • 1.hxg8Q?
      • threat
        • 2.Sc8#
        • 2.Bf6#
        • 2.Bf8#
        • 2.Qxf7#
        • 2.Qd8#
        • 2.Qf8#
      • 1...Bg6
        • 2.Sc8#
        • 2.Bf6#
        • 2.Bf8#
        • 2.Qd8#
        • 2.Qf8#
      • 1...Be8
        • 2.Sc8#
        • 2.Bf6#
        • 2.Bf8#
        • 2.Qxe8#
        • 2.Qf8#
      • 1...Bxg8!
    • 1.hxg8R?
      • threat
        • 2.Sc8#
        • 2.Bf6#
        • 2.Bf8#
      • 1...Bg6
        • 2.Bf6#
        • 2.Bf8#
      • 1...Be8
        • 2.Bf6#
        • 2.Bf8#
        • 2.Rxe8#
      • 1...Bxg8!
  • Keys
    • 1.h8S!
      • 1...Sf6
        • 2.exf6#
      • 1...Bg6
        • 2.Sxg6#
      • 1...Be8
        • 2.Sc8#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(e);N_GUARD::PXS(f)=S
    • S(f);OGATE::P(B),XS(f)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • B(e);N_GUARD::PXS(f)=S
      • Refutation
        • S(f);
    • Try
      • P(F);XS(f)
      • Threat
        • DUALS(6)
      • Refutation
        • B(e);XQ(F)
    • Try
      • P(F);XS(f)
      • Threat
        • DUALS(3)
      • Refutation
        • B(e);XR(F)
  • Actual
    • P(F);
    • Vars
      • S(f);OGATE::P(B),XS(f)
      • B(e);N_GUARD::S(F),XB(e)
      • B(e);SBLOCK::S(C)
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