MESON Chess Problem Database

Problem Display
PID: 65377 (BK1R4/4N3/Q7/N1P1P3/R5pr/1pPPkPnn/3rp3/1b2B1b1 w - - 0 1)

Packa, Ladislav

1st Place, Match: Czechoslovakia - Israel, 1992

BK1R4/4N3/Q7/N1P1P3/R5pr/1pPPkPnn/3rp3/1b2B1b1

#2

13 + 10

721 Variantim 1993
3681 FIDE Album (1992-1994) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Sf5#
    • 1...Sh1
      • 2.Sf5#
    • 1...Sf5
      • 2.Sxf5#
    • 1...Sh5
      • 2.Sf5#
    • 1...Sf4
      • 2.Sc4#
    • 1...gxf3
      • 2.Sd5#
  • Tries
    • 1.Rf8?
      • threat
        • 2.Sd5#
      • 1...Rxd3
        • 2.Sc4#
      • 1...Sf5
        • 2.Sxf5#
      • 1...Sf4!
    • 1.Qc4?
      • threat
        • 2.Qd4#
      • 1...gxf3
        • 2.Sd5#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sf5
        • 2.Sxf5#
        • 2.Qe4#
      • 1...Rxd3!
    • 1.Qh6+?
      • 1...Sf4
        • 2.Sc4#
        • 2.Qxf4#
      • 1...Sg5
        • 2.Qxg5#
      • 1...Rxh6!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Sc4#
      • 1...Bxd3
        • 2.Sd5#
      • 1...gxf3
        • 2.Qxf3#
      • 1...Sf5
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • S(g);N_GUARD::S(J)
    • S(g);N_GUARD::S(J),XS(g)
    • S(h);SBLOCK::S(F)
    • P(i);SBLOCK,XP(D)::S(J)
  • Tries
    • Try
      • R(M);
      • Threat
        • S(J)
      • Vars
        • R(c);SBLOCK,XP(C)::S(F)
        • S(g);N_GUARD::S(J),XS(g)
      • Refutation
        • S(h);
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Vars
        • P(i);SBLOCK,XP(D)::S(J)
        • S(g);N_GUARD::QAR1(I),XS(g)
      • Refutation
        • R(c);XP(C)
    • Try
      • Q(I);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAB(I),XS(h)
      • Refutation
        • R(j);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • S(F)
    • Vars
      • B(a);SBLOCK,XP(C)::S(J)
      • P(i);OGATE,XP(D)::QAR1(I),XP(i)
      • S(g);N_GUARD::S(J),XS(g)
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