MESON Chess Problem Database

Problem Display
PID: 261825 (6K1/3Q4/1p2p3/2P5/npk5/1N6/1pB5/1N2n3 w - - 0 1)

Bull, Cecil Alfred Lucas

The Field, 1887

(First published on Sat Feb 19 1887)

6K1/3Q4/1p2p3/2P5/npk5/1N6/1pB5/1N2n3

#2

6 + 7

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sf3
      • 2.Qd3#
    • 1...Sc3
      • 2.S1d2#
    • 1...Sxc5
      • 2.S3d2#
    • 1...bxc5
      • 2.S3d2#
      • 2.Sa5#
    • 1...b5
      • 2.Qxe6#
      • 2.Qd4#
  • Tries
    • 1.Sa3+?
      • 1...Kc3
        • 2.Qd2#
        • 2.Qd4#
      • 1...bxa3!
    • 1.Bd3+?
      • 1...Kxb3
        • 2.Qxe6#
      • 1...Sxd3!
    • 1.Be4?
      • 1...Kxb3
        • 2.Qxe6#
      • 1...Sxc5
        • 2.S3d2#
      • 1...bxc5
        • 2.S3d2#
        • 2.Sa5#
      • 1...Sc2
        • 2.Qd3#
      • 1...Sg2
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sf3
        • 2.Qd3#
      • 1...Sc3
        • 2.S1d2#
      • 1...b5
        • 2.Qxe6#
      • 1...e5!
    • 1.Bf5?
      • threat
        • 2.Bxe6#
      • 1...Kxb3
        • 2.Qxe6#
      • 1...Sxc5
        • 2.S3d2#
      • 1...e5
        • 2.Be6#
      • 1...Sc3
        • 2.S1d2#
      • 1...exf5!
    • 1.Bh7?
      • 1...Kxb3
        • 2.Qxe6#
      • 1...Sxc5
        • 2.S3d2#
      • 1...bxc5
        • 2.S3d2#
        • 2.Sa5#
      • 1...Sc2
        • 2.Qd3#
      • 1...Sg2
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sf3
        • 2.Qd3#
      • 1...Sc3
        • 2.S1d2#
      • 1...b5
        • 2.Qxe6#
      • 1...e5!
  • Keys
    • 1.Bg6!
      • 1...Kxb3
        • 2.Qxe6#
      • 1...Sxc5
        • 2.S3d2#
      • 1...bxc5
        • 2.S3d2#
        • 2.Sa5#
      • 1...e5
        • 2.Bf7#
      • 1...Sc2
        • 2.Qd3#
      • 1...Sg2
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sf3
        • 2.Qd3#
      • 1...Sc3
        • 2.S1d2#
      • 1...b5
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(E)
    • S(a);N_GUARD::QAB1(E),XS(a)
    • S(c);SBLOCK::S(A)
    • S(c);SBLOCK,XP(D)::S(C)
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • P(d);XS(A)
    • Try
      • B(B);CHECK
      • Vars
        • K(e);N_GUARD,S_FLIGHT,XS(C)::QAB(E),XP(g)
      • Refutation
        • S(a);XB(B)
    • Try
      • B(B);
      • Vars
        • K(e);N_GUARD,S_FLIGHT,XS(C)::QAB(E),XP(g)
        • S(c);SBLOCK,XP(D)::S(C)
        • S(a);N_GUARD::QAB1(E)
        • S(a);N_GUARD::QAB1(E),XS(a)
        • S(c);SBLOCK::S(A)
        • P(f);SBLOCK::QAB(E),XP(g)
      • Refutation
        • P(g);
    • Try
      • B(B);
      • Threat
        • B(B),XP(g)
      • Vars
        • K(e);N_GUARD,S_FLIGHT,XS(C)::QAB(E),XP(g)
        • S(c);SBLOCK,XP(D)::S(C)
        • P(g);::B(B)
        • S(c);SBLOCK::S(A)
      • Refutation
        • P(g);XB(B)
    • Try
      • B(B);
      • Vars
        • K(e);N_GUARD,S_FLIGHT,XS(C)::QAB(E),XP(g)
        • S(c);SBLOCK,XP(D)::S(C)
        • S(a);N_GUARD::QAB1(E)
        • S(a);N_GUARD::QAB1(E),XS(a)
        • S(c);SBLOCK::S(A)
        • P(f);SBLOCK::QAB(E),XP(g)
      • Refutation
        • P(g);
  • Actual
    • B(B);
    • Vars
      • K(e);N_GUARD,S_FLIGHT,XS(C)::QAB(E),XP(g)
      • S(c);SBLOCK,XP(D)::S(C)
      • P(g);OGATEB::B(B)
      • S(a);N_GUARD::QAB1(E)
      • S(a);N_GUARD::QAB1(E),XS(a)
      • S(c);SBLOCK::S(A)
      • P(f);SBLOCK::QAB(E),XP(g)
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