MESON Chess Problem Database

Problem Display
PID: 922 (3R1Q2/5N2/4p1p1/pK3b1r/4P1P1/3N1kP1/2PPr1p1/3BB1R1 w - - 0 1)

Buglos, Janos

The Problemist Supplement, 1993

3R1Q2/5N2/4p1p1/pK3b1r/4P1P1/3N1kP1/2PPr1p1/3BB1R1

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4+
      • 2.Sfe5#
    • 1...Bxg4+
      • 2.Sg5#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Se5#
      • 1...e5
        • 2.Sxe5#
      • 1...Kxg4!
    • 1.Sd6?
      • threat
        • 2.Se5#
      • 1...e5
        • 2.Sxe5#
      • 1...Kxg4!
    • 1.Bxe2+?
      • 1...Kxe4
        • 2.Sf2#
        • 2.Sc5#
      • 1...Kxe2!
    • 1.Rd4?
      • threat
        • 2.Sde5#
        • 2.Sfe5#
      • 1...Bxe4+
        • 2.Sfe5#
      • 1...Bxg4+
        • 2.Sfe5#
        • 2.Sg5#
      • 1...e5
        • 2.Sdxe5#
        • 2.Sfxe5#
      • 1...Kxg4!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Sf2#
      • 1...Bxe4+
        • 2.Sde5#
      • 1...Bxg4+
        • 2.Sc5#
      • 1...Kxe4
        • 2.Sc5#
      • 1...Kxg4
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);CHECK,SBLOCK,XP(H)::QAR(M)+S(K),DCHECK
    • B(e);CHECK,SBLOCK,XP(I)::QAR(M)+S(K),DCHECK
  • Tries
    • Try
      • S(F);
      • Threat
        • S(K)
      • Vars
        • P(g);::S(K),XP(g)
      • Refutation
        • K(c);S_FLIGHT,XP(I)
    • Try
      • S(K);P_PINB(e)
      • Threat
        • S(F)
      • Vars
        • P(g);::S(F),XP(g)
      • Refutation
        • K(c);N_SPINB(e),S_FLIGHT,XP(I)
    • Try
      • B(A);CHECK,XR(a)
      • Refutation
        • K(c);S_FLIGHT,XB(A)
    • Try
      • R(L);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);CHECK,XP(H)::QAR(M)+S(K),DCHECK
      • Refutation
        • K(c);S_FLIGHT,XP(I)
  • Actual
    • Q(M);
    • Threat
      • QAR(M)+S(F)
    • Vars
      • B(e);CHECK,SBLOCK,XP(H)::QAR(M)+S(F),DCHECK
      • B(e);CHECK,SBLOCK,XP(I)::QAR(M)+S(F)
      • K(c);N_SPINR(a),S_FLIGHT,XP(H)::S(F)
      • K(c);S_FLIGHT,XP(I)::S(F)
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