MESON Chess Problem Database

Problem Display
PID: 252114 (1B4B1/2b4p/1n1NpP1Q/2P1kP1P/1ppR2br/2P2p1p/4N2K/8 w - - 0 1)

Labai, Zoltan

Zadachi i Etyudi, 2004

1B4B1/2b4p/1n1NpP1Q/2P1kP1P/1ppR2br/2P2p1p/4N2K/8

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf5
      • 2.Sf7#
    • 1...Sd5
      • 2.Re4#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Re4#
      • 1...Bxf5
        • 2.Sf7#
      • 1...exf5
        • 2.Sf7#
      • 1...Bxd6!
    • 1.f7?
      • threat
        • 2.Qg7#
        • 2.Qxe6#
      • 1...Bxf5
        • 2.Qg7#
      • 1...Bxd6
        • 2.Qxe6#
      • 1...Bd8
        • 2.Qxe6#
      • 1...Sd5
        • 2.Re4#
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qxe6#
      • 1...exf5!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Sf7#
      • 1...Bxh5
        • 2.fxe6#
      • 1...Bxd6
        • 2.Bxd6#
      • 1...exf5
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(e);SBLOCK,XP(F)::S(H)
    • S(h);SBLOCK::R1(D)
  • Tries
    • Try
      • S(A);
      • Threat
        • R1(D)
      • Vars
        • B(e);SBLOCK,XP(F)::S(H)
        • P(i);SBLOCK,XP(F)::S(H)
      • Refutation
        • B(j);P_SPINB(j),XS(H)
    • Try
      • P(I);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);XP(F)::QAB(J)
        • B(j);P_SPINB(j),XS(H)::QAR1(J),XP(i)
        • B(j);::QAR1(J),XP(i)
        • S(h);::QAR1(J),XP(i)
      • Refutation
        • P(i);XP(F)
  • Actual
    • Q(J);
    • Threat
      • S(H)
    • Vars
      • B(e);N_GUARD,XP(G)::QAR(J)+P(F),XP(i)
      • B(j);OGATE,P_SPINB(j),XS(H)::B(K),XB(j)
      • P(i);P_SPINP(i),XP(F)::R1(D)
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