MESON Chess Problem Database

Problem Display
PID: 10550 (2N5/2k2K2/2P5/8/8/4N3/Q7/2R5 w - - 0 1)

Dennis, BW

The Problemist, 1965

2N5/2k2K2/2P5/8/8/4N3/Q7/2R5

#2

6 + 1

4883 Still More Fun with Chess Miniatures 2002

SOLUTION

  • SOUND
  • Tries
    • 1.Sa7?
      • 1...Kb6
        • 2.Sd5#
      • 1...Kd6
        • 2.Qh2#
      • 1...Kd8
        • 2.Qa5#
      • 1...Kb8!
    • 1.Qe6?
      • 1...Kd8
        • 2.Qd7#
        • 2.c7#
      • 1...Kb8!
    • 1.Qa6?
      • 1...Kb8
        • 2.Qb7#
        • 2.c7#
      • 1...Kd8!
    • 1.Qa7+?
      • 1...Kd8
        • 2.Qd7#
      • 1...Kxc8!
  • Keys
    • 1.Sd6!
      • 1...Kb6
        • 2.Sd5#
      • 1...Kxd6
        • 2.Qh2#
      • 1...Kb8
        • 2.c7#
      • 1...Kd8
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Vars
        • K(a);S_FLIGHT::S(C)
        • K(a);S_FLIGHT::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XS(F)
  • Actual
    • S(F);
    • Vars
      • K(a);S_FLIGHT::S(C)
      • K(a);OGATEB,S_FLIGHT,XS(F)::QAB(B)
      • K(a);OGATE,S_FLIGHT::P(D)
      • K(a);S_FLIGHT::QAB(B)
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