MESON Chess Problem Database

Problem Display
PID: 68283 (6nr/4p1p1/4Kpk1/1Q2PR2/7p/7P/3B4/8 w - - 0 1)

Neyndorff, Luke

The Problemist Supplement, 2006

6nr/4p1p1/4Kpk1/1Q2PR2/7p/7P/3B4/8

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rh7
      • 2.Qe8#
  • Tries
    • 1.Qd3?
      • 1...Kh7
        • 2.Rh5#
      • 1...fxe5
        • 2.Rxe5#
      • 1...Rh5
        • 2.Rxf6#
      • 1...Rh6
        • 2.Rg5#
      • 1...Sh6
        • 2.Rg5#
      • 1...Rh7!
  • Keys
    • 1.Qb1!
      • 1...Kh7
        • 2.Rh5#
      • 1...fxe5
        • 2.Rxe5#
      • 1...Rh5
        • 2.Rxf6#
      • 1...Rh6
        • 2.Rg5#
      • 1...Rh7
        • 2.Qg1#
      • 1...Sh6
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(g);SBLOCK::QAB(C)
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(c);S_FLIGHT::QAB(C)+R(E),DCHECK
        • P(b);OGATE,XP(D)::QAB(C)+R(E),XP(b)
        • R(g);SBLOCK::QAB(C)+R(E),DCHECK,XP(b)
        • R(g);SBLOCK::QAB(C)+R(E),DCHECK
        • S(f);SBLOCK::QAB(C)+R(E),DCHECK
      • Refutation
        • R(g);
  • Actual
    • Q(C);
    • Vars
      • K(c);S_FLIGHT::QAB(C)+R(E),DCHECK
      • P(b);OGATE,XP(D)::QAB(C)+R(E),XP(b)
      • R(g);SBLOCK::QAB(C)+R(E),DCHECK,XP(b)
      • R(g);SBLOCK::QAB(C)+R(E),DCHECK
      • R(g);SBLOCK::QAR(C)
      • S(f);SBLOCK::QAB(C)+R(E),DCHECK
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