MESON Chess Problem Database

Problem Display
PID: 63375 (8/2b2pK1/7R/3pkP2/1Q1Nqp2/B4P2/4B3/1b2R3 w - - 0 1)

Lacny, Ludovit

1st Place, Sal'a-Zvolen, 1988

8/2b2pK1/7R/3pkP2/1Q1Nqp2/B4P2/4B3/1b2R3

#2

9 + 7

23 Die Schwalbe 2005
145 StrateGems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Bxd3#
    • 1...Qxf5
      • 2.Sc6#
  • Tries
    • 1.Rh5?
      • threat
        • 2.Sc6#
      • 1...Qxf5
        • 2.Bd3#
      • 1...Qxd4
        • 2.Qe7#
      • 1...Qc2!
    • 1.Rf6?
      • threat
        • 2.Sc6#
      • 1...Qxd4
        • 2.Qe7#
      • 1...Qc2!
  • Keys
    • 1.Bb2!
      • threat
        • 2.Qe7#
      • 1...Qxf5
        • 2.Sc6#
      • 1...Qxd4
        • 2.Bd3#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Bd8
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(b);OGATEB::R(A)+B(B),XQ(b)
    • Q(b);SBLOCK,XP(G)::S(F)
  • Tries
    • Try
      • R(H);
      • Threat
        • S(F)
      • Vars
        • Q(b);OGATEB,P_SPINQ(b),XP(G)::R(A)+B(B)
        • Q(b);SBLOCK,XS(F)::QAR2(E)
      • Refutation
        • Q(b);
    • Try
      • R(H);
      • Threat
        • S(F)
      • Vars
        • Q(b);SBLOCK,XS(F)::QAR2(E)
      • Refutation
        • Q(b);
  • Actual
    • B(C);
    • Threat
      • QAR2(E)
    • Vars
      • Q(b);SBLOCK,XP(G)::B(C)+S(F),DCHECK
      • Q(b);OGATEB,P_SPINQ(b),XS(F)::R(A)+B(B)
      • B(f);N_GUARD::QAB1(E),XB(f)
      • B(f);N_GUARD::QAB1(E)
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