MESON Chess Problem Database

Problem Display
PID: 147042 (B2K4/p2p4/p2NP3/Rnk1Pp2/4pP1Q/P1p1N3/2P5/8 w - - 0 1)

Petite, Efren

Australian Chess Problem Magazine, 1995

B2K4/p2p4/p2NP3/Rnk1Pp2/4pP1Q/P1p1N3/2P5/8

#2

11 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Rxb5+?
      • 1...Kd4
        • 2.Sexf5#
        • 2.Sdxf5#
      • 1...axb5!
    • 1.Qf2?
      • 1...Kd4
        • 2.Sexf5#
      • 1...Kb6
        • 2.Sec4#
      • 1...dxe6!
  • Keys
    • 1.Qe7!
      • 1...Kd4
        • 2.Sdxf5#
      • 1...Kb6
        • 2.Sdc4#
      • 1...dxe6
        • 2.Qxa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK,XS(c)
      • Refutation
        • P(f);XR(F)
    • Try
      • Q(E);
      • Vars
        • K(d);N_SPINS(c),S_FLIGHT::QAB(E)+S(C),DCHECK,XP(e)
        • K(d);N_SPINS(c),S_FLIGHT::QAB(E)+S(C),DCHECK
      • Refutation
        • P(h);XP(I)
  • Actual
    • Q(E);
    • Vars
      • K(d);N_SPINS(c),S_FLIGHT::S(H),XP(e)
      • K(d);N_SPINS(c),S_FLIGHT::S(H)
      • P(h);OGATE,XP(I)::QAB(E),XP(g)
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