MESON Chess Problem Database

Problem Display
PID: 23239 (q6R/8/p1p5/8/K7/2B2P2/BNp5/2k2N2 w - - 0 1)

Onkoud, Abdelaziz

The Problemist, 1996

q6R/8/p1p5/8/K7/2B2P2/BNp5/2k2N2

#2

7 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2?
      • threat
        • 2.Sb3#
        • 2.Rh1#
      • 1...Qxh8
        • 2.Sb3#
      • 1...Qb7
        • 2.Rh1#
      • 1...Qa7
        • 2.Sb3#
      • 1...Qb8
        • 2.Rh1#
      • 1...Qe8
        • 2.Sb3#
      • 1...Qg8!
    • 1.Se3?
      • threat
        • 2.Sd3#
        • 2.Rh1#
      • 1...Qxh8
        • 2.Sd3#
      • 1...Qg8
        • 2.Sd3#
      • 1...Qd8!
    • 1.Sg3?
      • threat
        • 2.Se2#
        • 2.Rh1#
      • 1...Qxh8
        • 2.Se2#
      • 1...Qd8
        • 2.Se2#
      • 1...Qa7
        • 2.Se2#
      • 1...Qe8!
  • Keys
    • 1.Rh1!
      • threat
        • 2.Sd2#
        • 2.Sh2#
        • 2.Se3#
        • 2.Sg3#
      • 1...Qd8
        • 2.Sd2#
      • 1...Qa7
        • 2.Se3#
      • 1...Qe8
        • 2.Se3#
      • 1...Qg8
        • 2.Sg3#
      • 1...Qh8
        • 2.Sh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);XR(G)::S(A)
        • Q(e);::R(G)
        • Q(e);::S(A)
      • Refutation
        • Q(e);
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);XR(G)::S(C)
        • Q(e);::S(C)
      • Refutation
        • Q(e);
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);XR(G)::S(A)
        • Q(e);::S(A)
      • Refutation
        • Q(e);
  • Actual
    • R(G);
    • Threat
      • DUALS(4)
    • Vars
      • Q(e);::R(G)+S(A)
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