MESON Chess Problem Database

Problem Display
PID: 141965 (5Q2/8/1pp5/b2k3n/5P2/1P1bP2B/2PP1N2/6K1 w - - 0 1)

Lane, Henry Fitzgerald William

British Chess Magazine, 1899

5Q2/8/1pp5/b2k3n/5P2/1P1bP2B/2PP1N2/6K1

#2

9 + 6

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.c4#
    • 1...Bg6
      • 2.c4#
    • 1...Bh7
      • 2.c4#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Be6#
        • 2.Qe5#
      • 1...c5
        • 2.Qe6#
        • 2.Qd7#
      • 1...Bf5
        • 2.Qe5#
        • 2.c4#
      • 1...Bc3
        • 2.Be6#
      • 1...Sg7
        • 2.Qe5#
      • 1...Sxf4!
    • 1.Qf5+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Bxf5!
    • 1.e4+?
      • 1...Kd4
        • 2.Qd6#
      • 1...Bxe4!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qf5#
      • 1...Kxe4
        • 2.Bg2#
      • 1...Bxe4
        • 2.c4#
      • 1...c5
        • 2.Qa8#
      • 1...Bc3
        • 2.Sxc3#
      • 1...Sg3
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sg7
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::P(B)
  • Tries
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::B(G)
        • S(d);::QAR1(I)
      • Refutation
        • S(d);XP(H)
    • Try
      • Q(I);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(I)
      • Refutation
        • B(a);XQ(I)
    • Try
      • P(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(I)
      • Refutation
        • B(a);XP(F)
  • Actual
    • S(D);
    • Threat
      • QAR2(I)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(D)::B(G)
      • B(a);N_GUARD,SBLOCK,XS(D)::P(B)
      • P(f);OGATEB::QAB(I)
      • B(b);N_GUARD::S(D),XB(b)
      • S(d);N_GUARD::S(D)
      • S(d);N_GUARD::S(D),XS(d)
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