MESON Chess Problem Database

Problem Display
PID: 24119 (R2bK3/4B2p/N1p5/qNQ5/kP1p3r/p2P4/P7/8 w - - 0 1)

Tominic, Ivo

1st Prize, Yugoslav Championship, 1972-1974

R2bK3/4B2p/N1p5/qNQ5/kP1p3r/p2P4/P7/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb4
      • 2.Qxb4#
    • 1...Qc7
      • 2.Saxc7#
    • 1...Qxb5
      • 2.Qc2#
    • 1...cxb5
      • 2.Qc2#
  • Tries
    • 1.Sac7?
      • threat
        • 2.Rxa5#
        • 2.Qc2#
      • 1...Qxa8
        • 2.Qc2#
      • 1...Bxe7
        • 2.Rxa5#
      • 1...Qa6
        • 2.Rxa6#
        • 2.Qc2#
      • 1...Qa7
        • 2.Rxa7#
        • 2.Qxa7#
        • 2.Qc2#
      • 1...Rh2
        • 2.Rxa5#
      • 1...Bxc7!
    • 1.Qxd4?
      • threat
        • 2.Sc3#
      • 1...Qxb4
        • 2.Sac7#
      • 1...Qxb5
        • 2.Sc5#
      • 1...cxb5
        • 2.Sc5#
      • 1...Kxb5!
  • Keys
    • 1.Qxc6!
      • threat
        • 2.Sc3#
      • 1...Qxb4
        • 2.Sc5#
      • 1...Qxb5
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(e);OGATE,XP(C)::QAR1(E),XQ(e)
    • Q(e);::R(H)+S(F),XQ(e)
    • Q(e);SBLOCK,XS(D)::QAB(E)
    • P(f);SBLOCK,XS(D)::QAB(E)
  • Tries
    • Try
      • S(F);P_PINQ(e)
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);N_SPINQ(e),XR(H)::QAB(E)
        • B(h);XB(G)::R1(H),XQ(e)
        • R(d);SBLOCK::R1(H),XQ(e)
      • Refutation
        • B(h);XS(F)
    • Try
      • Q(E);XP(c)
      • Threat
        • S(D)
      • Vars
        • Q(e);P_SPINQ(e),XP(C)::R(H)+S(F)
        • Q(e);SBLOCK,XS(D)::R(H)+S(F),DCHECK
        • P(f);SBLOCK,XS(D)::S(F)
      • Refutation
        • K(b);S_FLIGHT,XS(D)
  • Actual
    • Q(E);XP(f)
    • Threat
      • QAB(E)+S(D),DCHECK
    • Vars
      • Q(e);SBLOCK,XP(C)::R(H)+S(F),DCHECK
      • Q(e);P_PINQ(E),P_SPINQ(e),XS(D)::R(H)+S(F)
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