MESON Chess Problem Database

Problem Display
PID: 145958 (1Q6/2p5/p1P3R1/bbk1K3/p1P3R1/p1p2N2/P1P5/8 w - - 0 1)

Lipton, Michael

The Problemist, 1951

1Q6/2p5/p1P3R1/bbk1K3/p1P3R1/p1p2N2/P1P5/8

#2

9 + 8

14867 BCPS Library 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Qf8#
    • 1...Bb4
      • 2.Qa7#
    • 1...Bb6
      • 2.Qf8#
  • Tries
    • 1.Se1?
      • threat
        • 2.Sd3#
      • 1...Kb4
        • 2.Sd3#
        • 2.Qf8#
      • 1...Bxc4!
  • Keys
    • 1.Sg5!
      • 1...Kb4
        • 2.Qf8#
      • 1...Bxc4
        • 2.Se4#
      • 1...Bxc6
        • 2.Se6#
      • 1...Bb4
        • 2.Qa7#
      • 1...Bb6
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(f);P_SPINB(e),S_FLIGHT::QAB(I)
    • B(d);N_GUARD,SBLOCK::QAB(I)
    • B(d);SBLOCK::QAB(I)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Refutation
        • B(e);XP(D)
  • Actual
    • S(C);
    • Vars
      • K(f);P_SPINB(e),S_FLIGHT::QAB(I)
      • B(e);SBLOCK,XP(D)::S(C)
      • B(e);SBLOCK,XP(G)::S(C)
      • B(d);N_GUARD,SBLOCK::QAB(I)
      • B(d);SBLOCK::QAB(I)
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