MESON Chess Problem Database

Problem Display
PID: 7836 (B6q/2P5/1PR1pP2/1P1k1P2/2p3Pp/2p2N2/nNQ5/4Kb2 w - - 0 1)

Grinblat, Arieh

4th Comm., Israel Ring Ty., 1994

B6q/2P5/1PR1pP2/1P1k1P2/2p3Pp/2p2N2/nNQ5/4Kb2

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qd8
      • 2.cxd8Q#
      • 2.cxd8R#
    • 1...exf5
      • 2.Qxf5#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qd4#
      • 1...Ke4
        • 2.Rxc4#
      • 1...Qxf6
        • 2.Rxe6#
      • 1...e5!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Rxe6#
      • 1...Qxf6
        • 2.Rxc4#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(h);OGATE::PXQ(h)=Q
    • P(g);OGATE,XP(G)::QAR2(C),XP(g)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(f);S_FLIGHT::B(L)+R(I),DCHECK,XP(d)
        • Q(h);N_GUARD,XP(J)::B(L)+R(I),XP(g)
      • Refutation
        • P(g);
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(f);S_FLIGHT::B(L)+R(I),DCHECK,XP(g)
      • Q(h);N_GUARD,XP(J)::B(L)+R(I),XP(d)
      • P(g);::QAR1(C),XP(g)
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