MESON Chess Problem Database

Problem Display
PID: 134380 (b3R2K/2PB3p/rp1p1p1r/n2kPN2/4p3/NP2B3/2Rb4/2nQq3 w - - 0 1)

Taraba, Jozef

1st Prize, Lacny-60 JT, 1986

b3R2K/2PB3p/rp1p1p1r/n2kPN2/4p3/NP2B3/2Rb4/2nQq3

#2

11 + 13

14580 Chess Compositions (Taraba) 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.bxc4#
    • 1...Sb7
      • 2.Bc6#
    • 1...dxe5
      • 2.Be6#
    • 1...fxe5
      • 2.Se7#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Be6#
      • 1...e3
        • 2.Qf3#
      • 1...Bc3
        • 2.Se7#
      • 1...Sc4
        • 2.bxc4#
      • 1...fxe5!
    • 1.Qh5?
      • threat
        • 2.Se7#
        • 2.Qf7#
      • 1...Qxe3
        • 2.Qf7#
      • 1...Bxe3
        • 2.Qf7#
      • 1...dxe5
        • 2.Be6#
        • 2.Qf7#
      • 1...fxe5
        • 2.Se7#
      • 1...Rg6
        • 2.Se7#
      • 1...Sc6
        • 2.Qf7#
      • 1...Rxh5!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Se7#
      • 1...Qxe3
        • 2.Scxe3#
      • 1...Sxc4
        • 2.bxc4#
      • 1...Sc6
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(e);OGATE::P(D),XS(e)
    • S(e);N_GUARD,S_CUTB(m)::B(I)
    • P(i);SBLOCK,XP(F)::B(I)
    • P(j);SBLOCK,XP(F)::S(G)
  • Tries
    • Try
      • B(E);N_PINB(c)
      • Threat
        • B(I)
      • Vars
        • P(d);OGATEB::QAB(A)
        • B(c);::S(G)
        • S(e);OGATE::P(D),XS(e)
      • Refutation
        • P(j);XP(F)
    • Try
      • Q(A);N_PINB(c)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);XB(E)::QAB(A)
        • B(c);XB(E)::QAB(A)
        • P(j);XP(F)::S(G)
        • R(k);::S(G)
        • S(e);::QAB(A)
      • Refutation
        • R(k);XQ(A)
  • Actual
    • S(C);
    • Threat
      • S(G)
    • Vars
      • Q(b);XB(E)::S(C),XQ(b)
      • S(e);OGATE,XS(C)::P(D),XS(e)
      • S(e);SBLOCK::B(I)
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