MESON Chess Problem Database

Problem Display
PID: 144926 (8/4n2R/Pk3BRQ/1B6/P3K3/8/8/8 w - - 0 1)

Thompson, Walter Hood

Les Tours de Force sur l'Echiquier, 1906

8/4n2R/Pk3BRQ/1B6/P3K3/8/8/8

#2

8 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Bc3#
    • 1...Kc5
      • 2.Bxe7#
  • Tries
    • 1.Bd4+?
      • 1...Ka5
        • 2.Bc3#
        • 2.Qd2#
      • 1...Kc7!
    • 1.Rxe7?
      • 1...Ka5
        • 2.Bc3#
      • 1...Kc5!
    • 1.Qc1?
      • 1...Ka5
        • 2.Bc3#
      • 1...Sxg6
        • 2.Bd8#
        • 2.Qc7#
      • 1...Sd5
        • 2.Bd8#
      • 1...Sf5
        • 2.Bd8#
        • 2.Qc7#
      • 1...Sc6
        • 2.Bd8#
      • 1...Sc8
        • 2.Bd8#
        • 2.Qc7#
      • 1...Sg8
        • 2.Bd8#
        • 2.Qc7#
      • 1...Ka7!
    • 1.Qe3+?
      • 1...Ka5
        • 2.Bc3#
      • 1...Kc7!
  • Keys
    • 1.Qf8!
      • 1...Ka5
        • 2.Bc3#
      • 1...Kc5
        • 2.Bxe7#
      • 1...Ka7
        • 2.Bd4#
      • 1...Kc7
        • 2.Be5#
      • 1...Sxg6
        • 2.Bd8#
      • 1...Sd5
        • 2.Bd8#
      • 1...Sf5
        • 2.Bd8#
      • 1...Sc6
        • 2.Bd8#
      • 1...Sc8
        • 2.Bd8#
      • 1...Sg8
        • 2.Bd8#

This is a version of 2727

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(E)
    • K(a);S_FLIGHT::B(E),XS(b)
  • Tries
    • Try
      • B(E);CHECK
      • Refutation
        • K(a);P_SPINS(b),S_FLIGHT
    • Try
      • R(H);XS(b)
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::B(E)
        • S(b);OGATE::R(F)+B(E),DCHECK
        • S(b);OGATE::B(E)
      • Refutation
        • K(a);P_SPINS(b),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);P_SPINS(b),S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);S_FLIGHT::B(E)
      • K(a);P_SPINS(b),S_FLIGHT::B(E),XS(b)
      • K(a);P_SPINS(b),S_FLIGHT::B(E)
      • S(b);OGATE,XR(F)::B(E)
      • S(b);OGATE::R(F)+B(E),DCHECK
      • S(b);OGATE::B(E)
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