MESON Chess Problem Database

Problem Display
PID: 102414 (8/B7/1RK4p/3PQ3/3PNN2/1P2k3/6P1/8 w - - 0 1)

Ivanov, Bernard

Europe Echecs, 1989

8/B7/1RK4p/3PQ3/3PNN2/1P2k3/6P1/8

#2

10 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qd6?
      • 1...Kxd4
        • 2.Rb4#
      • 1...Kxe4
        • 2.Qe5#
      • 1...h5!
    • 1.Qf6?
      • 1...Kxe4
        • 2.Qe5#
      • 1...h5!
    • 1.Qc7?
      • 1...Kxd4
        • 2.Rb4#
      • 1...Kxe4
        • 2.Qe5#
      • 1...h5!
    • 1.Qb8?
      • 1...Kxd4
        • 2.Rb4#
      • 1...Kxe4
        • 2.Qe5#
      • 1...h5!
    • 1.Qf5?
      • 1...Kxd4
        • 2.Rb4#
        • 2.Rb5#
        • 2.Ra6#
        • 2.Rb7#
        • 2.Rb8#
      • 1...h5!
  • Keys
    • 1.Qh5!
      • 1...Kxd4
        • 2.Rb4#
      • 1...Kxe4
        • 2.Qe5#
      • 1...Kxf4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(C)::B(J)+R(H),DCHECK
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(G)
      • Refutation
        • P(b);
    • Try
      • Q(G);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(G)
      • Refutation
        • P(b);
    • Try
      • Q(G);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(C)::B(J)+R(H),DCHECK
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(G)
      • Refutation
        • P(b);
    • Try
      • Q(G);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(C)::B(J)+R(H),DCHECK
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(G)
      • Refutation
        • P(b);
    • Try
      • Q(G);
      • Refutation
        • P(b);
  • Actual
    • Q(G);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XP(C)::B(J)+R(H),DCHECK
      • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(G)
      • K(a);S_FLIGHT,XS(E)::QAR1(G)
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