MESON Chess Problem Database

Problem Display
PID: 191284 (8/b3RqP1/4Np2/3p1p1p/7N/2B1k3/2P5/4K2R w K - 0 1)

Coello Alonso, Jose Antonio

BCPS Website, 2019

8/b3RqP1/4Np2/3p1p1p/7N/2B1k3/2P5/4K2R

#2

8 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Sg2+?
      • 1...Ke4
        • 2.Sg5#
      • 1...Kf3!
    • 1.Sg5+?
      • 1...Qe6
        • 2.Sg2#
      • 1...Qxe7
        • 2.Sg2#
      • 1...Kf4!
  • Keys
    • 1.0-0!
      • threat
        • 2.Re1#
      • 1...Ke2+
        • 2.Sd4#
      • 1...Ke4+
        • 2.Sc5#
      • 1...Qg6+
        • 2.Sg5#
      • 1...Qxg7+
        • 2.Sxg7#
      • 1...Qxe6
        • 2.Rxe6#

This is a version of 191283

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT::R(G)+S(F),DCHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • Q(g);P_SPINQ(g)::S(E)
        • Q(g);XR(G)::S(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(A);0-0
    • Threat
      • R(B)
    • Vars
      • K(a);CHECK,P-FLIGHT::R(G)+S(F),DCHECK
      • Q(g);CHECK,N_GUARD::R(G)+S(F)
      • Q(g);CHECK,XP(H)::R(G)+S(F),XQ(g)
      • Q(g);OGATE,P_SPINQ(g),XS(F)::R(G),XQ(g)
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