MESON Chess Problem Database

Problem Display
PID: 161608 (8/b1Q5/4p3/B2P4/3k2N1/8/2B3K1/1n6 w - - 0 1)

Alexander, Frederick Forrest Lawrie

Bolton Football and Field, 1904

(First published on Sat Nov 26 1904)

8/b1Q5/4p3/B2P4/3k2N1/8/2B3K1/1n6

#2

6 + 4

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Bc3+?
      • 1...Kxd5
        • 2.Sf6#
      • 1...Sxc3!
    • 1.Bb6+?
      • 1...Kxd5
        • 2.Se3#
        • 2.Sf6#
        • 2.Qc5#
      • 1...Bxb6!
  • Keys
    • 1.Se3!
      • 1...Kxe3
        • 2.Qe5#
      • 1...exd5
        • 2.Sf5#
      • 1...Bc5
        • 2.Qf4#
      • 1...Bb6
        • 2.Bxb6#
      • 1...Bb8
        • 2.Bb6#
      • 1...Sd2
        • 2.Qc3#
      • 1...Sa3
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...e5
        • 2.Qxa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(E)::S(C)
      • Refutation
        • S(a);XB(D)
    • Try
      • B(D);CHECK
      • Refutation
        • B(d);XB(D)
  • Actual
    • S(C);
    • Vars
      • K(b);S_FLIGHT,XS(C)::QAR2(F)
      • P(c);N_GUARD,SBLOCK,XP(E)::S(C)
      • B(d);SBLOCK::QAR2(F)
      • B(d);N_GUARD::B(D),XB(d)
      • B(d);N_GUARD::B(D)
      • S(a);N_GUARD::QAB1(F)
      • S(a);N_GUARD::QAB1(F),XS(a)
      • P(c);SBLOCK::QAB(F),XB(d)
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