MESON Chess Problem Database

Problem Display
PID: 99721 (6b1/3KpQN1/5bpn/R3P1p1/p1B2k2/2Np3P/qB1n1PP1/8 w - - 0 1)

Labai, Zoltan

Magyar Sakkelet, 1975

6b1/3KpQN1/5bpn/R3P1p1/p1B2k2/2Np3P/qB1n1PP1/8

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.g3#
    • 1...Se4
      • 2.Sd5#
    • 1...Sf5
      • 2.Se6#
  • Tries
    • 1.Sh5+?
      • 1...Kf5
        • 2.e6#
      • 1...gxh5!
    • 1.Bxd3?
      • threat
        • 2.Se2#
      • 1...Qd5+
        • 2.Sxd5#
      • 1...Qe6+
        • 2.Sxe6#
      • 1...g4!
    • 1.Qxg6?
      • threat
        • 2.Sh5#
      • 1...Be6+
        • 2.Sxe6#
      • 1...Bd5
        • 2.Sxd5#
      • 1...Bxg7!
  • Keys
    • 1.Se6+!
      • 1...Kf5
        • 2.exf6#

There are these versions: 99515

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(b);SBLOCK::P(C)
    • S(b);SBLOCK::S(D)
    • S(i);N_SPINB(g),SBLOCK::S(K)
  • Tries
    • Try
      • S(K);CHECK
      • Vars
        • K(e);P-FLIGHT::R(G)+P(H)
      • Refutation
        • P(h);XS(K)
    • Try
      • B(F);XP(c)
      • Threat
        • S(D)
      • Vars
        • Q(a);CHECK,N_GUARD::S(D),XQ(a)
        • Q(a);CHECK,N_GUARD::S(K),XQ(a)
      • Refutation
        • P(f);
    • Try
      • Q(J);N_PINB(g),XP(h)
      • Threat
        • S(K)
      • Vars
        • B(k);CHECK,N_GUARD::S(K),XB(k)
        • B(k);N_GUARD::S(D),XB(k)
      • Refutation
        • B(g);XS(K)
  • Actual
    • S(K);CHECK
    • Vars
      • K(e);P-FLIGHT::R(G)+P(H),XB(g)
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