MESON Chess Problem Database

Problem Display
PID: 262444 (8/6bQ/4N1nr/1p1N2R1/4k2p/1K5B/2R4B/6nr w - - 0 1)

Touvron, Fabrice

Comm., Europe Echecs, 1986

8/6bQ/4N1nr/1p1N2R1/4k2p/1K5B/2R4B/6nr

#2

8 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Bf5#
    • 1...Kf3
      • 2.Bg2#
  • Tries
    • 1.Sc5+?
      • 1...Kf3
        • 2.Bg2#
        • 2.Bg4#
      • 1...Kd4!
    • 1.Bf5+?
      • 1...Kxd5
        • 2.Rc5#
      • 1...Kf3!
    • 1.Re2+?
      • 1...Kd3
        • 2.Sdf4#
      • 1...Kf3
        • 2.Bg4#
      • 1...Sxe2!
    • 1.Re5+?
      • 1...Kd3
        • 2.Sb4#
        • 2.Sdf4#
        • 2.Bf5#
        • 2.Re3#
      • 1...Kf3
        • 2.Sd4#
        • 2.Sg5#
        • 2.Re3#
      • 1...Bxe5!
    • 1.Qxg6+?
      • 1...Kf3
        • 2.Bg2#
        • 2.Bg4#
        • 2.Qd3#
        • 2.Qf5#
      • 1...Rxg6!
  • Keys
    • 1.Rg4+!
      • 1...Kd3
        • 2.Sc5#
      • 1...Kf3
        • 2.Sg5#
      • 1...Kxd5
        • 2.Sc7#
      • 1...Kf5
        • 2.Sxg7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);N_GUARD,S_FLIGHT::B(D)
    • K(c);N_GUARD,N_SPINS(f),S_CUTS(a),S_FLIGHT::B(D)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(c);N_SPINS(f),P-FLIGHT
    • Try
      • B(D);CHECK,N_PINS(f)
      • Vars
        • K(c);N_GUARD,S_FLIGHT,XS(E)::R1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(c);N_GUARD,S_CUTS(a),S_FLIGHT::S(E)
        • K(c);N_GUARD,N_SPINS(f),S_CUTS(a),S_FLIGHT::B(D)
      • Refutation
        • S(a);XR(A)
    • Try
      • R(F);CHECK
      • Refutation
        • B(h);XR(F)
    • Try
      • Q(H);CHECK,XS(f)
      • Refutation
        • R(g);XQ(H)
  • Actual
    • R(F);CHECK
    • Vars
      • K(c);N_GUARD,S_FLIGHT::S(G)
      • K(c);N_GUARD,N_SPINS(f),S_FLIGHT::S(G)
      • K(c);N_GUARD,N_SPINS(f),S_FLIGHT,XS(E)::S(G)
      • K(c);N_GUARD,S_FLIGHT::S(G),XB(h)
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