MESON Chess Problem Database

Problem Display
PID: 99515 (1b4b1/3KpQN1/5Ppn/R3P1p1/p1B2k2/2Np3P/qB1n1PP1/8 w - - 0 1)

Labai, Zoltan

7th HM., Magyar Sakkelet, 1975

1b4b1/3KpQN1/5Ppn/R3P1p1/p1B2k2/2Np3P/qB1n1PP1/8

#2

12 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.g3#
    • 1...Se4
      • 2.Sd5#
    • 1...Sf5
      • 2.Se6#
  • Tries
    • 1.Bxd3?
      • threat
        • 2.Se2#
      • 1...Qd5+
        • 2.Sxd5#
      • 1...Qe6+
        • 2.Sxe6#
      • 1...g4!
  • Keys
    • 1.Qxg6!
      • threat
        • 2.Sh5#
      • 1...Be6+
        • 2.Sxe6#
      • 1...Bd5
        • 2.Sxd5#

This is a version of 99721

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(b);SBLOCK::P(C)
    • S(b);SBLOCK::S(D)
    • S(h);SBLOCK::S(L)
  • Tries
    • Try
      • B(F);XP(c)
      • Threat
        • S(D)
      • Vars
        • Q(a);CHECK,N_GUARD::S(D),XQ(a)
        • Q(a);CHECK,N_GUARD::S(L),XQ(a)
      • Refutation
        • P(f);
  • Actual
    • Q(K);XP(g)
    • Threat
      • S(L)
    • Vars
      • B(k);CHECK,N_GUARD::S(L),XB(k)
      • B(k);N_GUARD::S(D),XB(k)
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