MESON Chess Problem Database

Problem Display
PID: 51181 (3B4/3p4/P2p2P1/2pkp3/P1Rp2P1/3N4/P2K2P1/3NR3 w - - 0 1)

Allison, Christopher John

Manchester Guardian, 1953

3B4/3p4/P2p2P1/2pkp3/P1Rp2P1/3N4/P2K2P1/3NR3

#2

12 + 6

15148 Sadier Collection 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Sb4#
    • 1...Ke6
      • 2.Sf4#
  • Tries
    • 1.S1b2?
      • 1...Kc6
        • 2.Sb4#
      • 1...Ke6
        • 2.Sf4#
      • 1...e4!
    • 1.Rxe5+?
      • 1...Kxc4
        • 2.S1b2#
      • 1...Kc6
        • 2.Sb4#
      • 1...dxe5!
    • 1.Rxc5+?
      • 1...Ke6
        • 2.Sf4#
      • 1...dxc5!
  • Keys
    • 1.Re4!
      • 1...Kxc4
        • 2.Se3#
      • 1...Kxe4
        • 2.Sc3#
      • 1...Kc6
        • 2.Sb4#
      • 1...Ke6
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINP(b),S_FLIGHT::S(F)
    • K(c);P_SPINP(d),S_FLIGHT::S(F)
  • Tries
    • Try
      • S(A);
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::S(F)
        • K(c);P_SPINP(d),S_FLIGHT::S(F)
      • Refutation
        • P(d);
    • Try
      • R(B);CHECK,XP(d)
      • Vars
        • K(c);S_FLIGHT,XR(H)::S(A)
        • K(c);P_SPINP(b),S_FLIGHT::S(F)
      • Refutation
        • P(e);XR(B)
    • Try
      • R(H);CHECK,XP(b)
      • Vars
        • K(c);P_SPINP(d),S_FLIGHT::S(F)
      • Refutation
        • P(e);XR(H)
  • Actual
    • R(B);
    • Vars
      • K(c);P_SPINP(a),S_FLIGHT,XR(H)::S(A)
      • K(c);P_SPINP(a),S_FLIGHT,XR(B)::S(A)
      • K(c);P_SPINP(b),S_FLIGHT::S(F)
      • K(c);P_SPINP(d),S_FLIGHT::S(F)
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