MESON Chess Problem Database

Problem Display
PID: 183994 (5n2/PR2B3/6P1/bP1k4/6N1/5K2/b1B1N3/8 w - - 0 1)

Alexander, Frederick Forrest Lawrie

British Chess Magazine, 1915

5n2/PR2B3/6P1/bP1k4/6N1/5K2/b1B1N3/8

#2

9 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Se3#
    • 1...Ke6
      • 2.Sf4#
    • 1...Bb1
      • 2.Bb3#
    • 1...Bb3
      • 2.Bxb3#
  • Tries
    • 1.Be4+?
      • 1...Ke6
        • 2.Sd4#
        • 2.Sf4#
      • 1...Kc4!
  • Keys
    • 1.a8Q!
      • 1...Kc4
        • 2.Se3#
      • 1...Ke6
        • 2.Sf4#
      • 1...Sxg6
        • 2.Qg8#
      • 1...Bb1
        • 2.Bb3#
      • 1...Bb3
        • 2.Bxb3#
      • 1...Bc4
        • 2.Rb6#
      • 1...Be1
        • 2.Qxa2#
      • 1...Bd2
        • 2.Qxa2#
      • 1...Bc3
        • 2.Qxa2#
      • 1...Bb4
        • 2.Qxa2#
      • 1...Bb6
        • 2.Qxa2#
      • 1...Bc7
        • 2.Qxa2#
      • 1...Bd8
        • 2.Qxa2#
      • 1...Se6
        • 2.Rc7#
      • 1...Sd7
        • 2.Qg8#
      • 1...Sh7
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(D)
    • K(c);S_FLIGHT::S(B)
    • B(a);N_GUARD::B(A)
    • B(a);N_GUARD::B(A),XB(a)
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • P(G);
    • Vars
      • K(c);S_FLIGHT::S(D)
      • K(c);S_FLIGHT::S(B)
      • S(d);OGATE,XP(F)::QAB(G)
      • B(a);N_GUARD::B(A)
      • B(a);N_GUARD::B(A),XB(a)
      • B(a);SBLOCK::QAB(G)+R(H)
      • B(b);OGATE::QAB(G),XB(a)
      • S(d);SBLOCK::QAB(G)+R(H)
      • S(d);OGATE::QAB(G)
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Developed and maintained by Brian Stephenson.
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