MESON Chess Problem Database

Problem Display
PID: 68427 (n2KN3/4P3/6p1/2pk1bp1/Q2P2n1/3p4/3P4/4RB2 w - - 0 1)

Billington, Thomas Henry

English Mechanic and World of Science, 1892

(First published on Fri Jan 29 1892)

n2KN3/4P3/6p1/2pk1bp1/Q2P2n1/3p4/3P4/4RB2

#2

8 + 8

187 The Chess Bouquet 1897
15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Bg2#
    • 1...Bd7
      • 2.Bg2#
    • 1...Bc8
      • 2.Bg2#
    • 1...Sf2
      • 2.Re5#
    • 1...Sh2
      • 2.Re5#
    • 1...Se5
      • 2.Rxe5#
    • 1...Sf6
      • 2.Re5#
    • 1...Sh6
      • 2.Re5#
    • 1...cxd4
      • 2.Qb5#
  • Tries
    • 1.Sf6+?
      • 1...Kd6
        • 2.e8S#
      • 1...Sxf6!
    • 1.Sc7+?
      • 1...Kd6
        • 2.e8S#
      • 1...Sxc7!
  • Keys
    • 1.Re6!
      • 1...Kxe6
        • 2.Qc4#
      • 1...Bxe6
        • 2.Bg2#
      • 1...cxd4
        • 2.Qc6#
      • 1...Se5
        • 2.Rxe5#
      • 1...c4
        • 2.Qd7#
      • 1...Be4
        • 2.Rd6#
      • 1...Sf2
        • 2.Re5#
      • 1...Sh2
        • 2.Re5#
      • 1...Se3
        • 2.Re5#
      • 1...Sf6
        • 2.Re5#
      • 1...Sh6
        • 2.Re5#
      • 1...Sb6
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • B(e);N_GUARD::B(B)
    • S(b);N_GUARD::R1(A)
    • S(b);N_GUARD::R1(A),XS(b)
    • P(c);OGATEB,SBLOCK,XP(E)::QAR2(D)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(d);P-FLIGHT::P=S
      • Refutation
        • S(b);XS(H)
    • Try
      • S(H);CHECK
      • Vars
        • K(d);P-FLIGHT::P=S
      • Refutation
        • S(h);XS(H)
  • Actual
    • R(A);
    • Vars
      • K(d);S_FLIGHT,XR(A)::QAB(D)
      • B(e);N_GUARD,SBLOCK,XR(A)::B(B)
      • P(c);SBLOCK,XP(E)::QAB1(D)
      • S(b);N_GUARD::R1(A),XS(b)
      • P(c);SBLOCK::QAR2(D)
      • B(e);SBLOCK::R1(A)
      • S(b);N_GUARD::R1(A)
      • S(h);N_GUARD::S(H)
      • S(h);N_GUARD::S(H),XS(h)
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