MESON Chess Problem Database

Problem Display
PID: 66749 (1R5n/B1P2Bb1/7p/pPPN3K/qpkP1N2/1p1p1P2/1rnP1Q2/2R2b2 w - - 0 1)

Simoni, Francesco

Phenix, 1992

1R5n/B1P2Bb1/7p/pPPN3K/qpkP1N2/1p1p1P2/1rnP1Q2/2R2b2

#2

14 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb5
      • 2.Sb6#
    • 1...Bxd4
      • 2.Se3#
    • 1...Sg6
      • 2.Sc3#
      • 2.Sf6#
      • 2.Se7#
  • Tries
    • 1.Be6?
      • threat
        • 2.Sc3#
        • 2.Sf6#
        • 2.Se7#
      • 1...Bf6
        • 2.Sc3#
        • 2.Sxf6#
        • 2.Se7#
      • 1...Bh3!
    • 1.Be8?
      • threat
        • 2.Sb6#
      • 1...Qxb5
        • 2.Bxb5#
      • 1...Bxd4!
  • Keys
    • 1.Se6!
      • threat
        • 2.Se3#
      • 1...Kxd5
        • 2.Sf4#
      • 1...Bxd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(f);SBLOCK,XP(G)::B(M)+S(I),DCHECK
    • B(k);SBLOCK,XP(E)::B(M)+S(I),DCHECK
  • Tries
    • Try
      • B(M);
      • Threat
        • DUALS(3)
      • Refutation
        • B(a);
    • Try
      • B(M);
      • Threat
        • S(I)
      • Vars
        • Q(f);OGATE,XP(G)::B(M),XQ(f)
      • Refutation
        • B(k);XP(E)
  • Actual
    • S(F);
    • Threat
      • S(I)
    • Vars
      • K(h);N_SPINS(c),S_FLIGHT,XS(I)::B(M)+S(F),DCHECK
      • B(k);OGATE,XP(E)::QAR1(C),XB(k)
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