MESON Chess Problem Database

Problem Display
PID: 161021 (1B6/nQ6/R1b1N1P1/3k4/1b6/5P2/2K2N2/8 w - - 0 1)

Setherington, DT

Sunday Chronicle, 1943

(First published on Sun Oct 31 1943)

1B6/nQ6/R1b1N1P1/3k4/1b6/5P2/2K2N2/8

#2

8 + 4

14867 BCPS Library 2017
15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Qf7#
    • 1...Be1
      • 2.Qb3#
    • 1...Bd2
      • 2.Qb3#
    • 1...Ba3
      • 2.Qb3#
    • 1...Bc3
      • 2.Qb3#
    • 1...Ba5
      • 2.Qb3#
    • 1...Bc5
      • 2.Qb3#
    • 1...Be7
      • 2.Qb3#
    • 1...Bf8
      • 2.Qb3#
    • 1...Sb5
      • 2.Qxc6#
    • 1...Sc8
      • 2.Qxc6#
  • Tries
    • 1.Sd1?
      • 1...Kc4
        • 2.Se3#
      • 1...Kxe6
        • 2.Qf7#
      • 1...Bxb7
        • 2.Se3#
      • 1...Be1
        • 2.Qb3#
      • 1...Bd2
        • 2.Qb3#
      • 1...Ba3
        • 2.Qb3#
      • 1...Bc3
        • 2.Qb3#
      • 1...Ba5
        • 2.Qb3#
      • 1...Bc5
        • 2.Qb3#
      • 1...Be7
        • 2.Qb3#
      • 1...Bf8
        • 2.Qb3#
      • 1...Sb5
        • 2.Qxc6#
      • 1...Sc8
        • 2.Qxc6#
      • 1...Bd6!
  • Keys
    • 1.Sg4!
      • 1...Kc4
        • 2.Se3#
      • 1...Kxe6
        • 2.Qf7#
      • 1...Bxb7
        • 2.Se3#
      • 1...Be1
        • 2.Qb3#
      • 1...Bd2
        • 2.Qb3#
      • 1...Ba3
        • 2.Qb3#
      • 1...Bc3
        • 2.Qb3#
      • 1...Ba5
        • 2.Qb3#
      • 1...Bc5
        • 2.Qb3#
      • 1...Bd6
        • 2.Qb3#
      • 1...Be7
        • 2.Qb3#
      • 1...Bf8
        • 2.Qb3#
      • 1...Sb5
        • 2.Qxc6#
      • 1...Sc8
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XS(E)::QAB1(G)
    • B(a);OGATE::QAB(G)
    • S(d);N_GUARD::QAB1(G),XB(c)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);N_SPINB(c),S_FLIGHT::S(B)
        • K(b);OGATEB,S_FLIGHT,XS(E)::QAB1(G)
        • B(c);N_SPINB(c),XQ(G)::S(B)
        • B(a);OGATE::QAB(G)
        • S(d);N_GUARD::QAB1(G),XB(c)
      • Refutation
        • B(a);
  • Actual
    • S(B);
    • Vars
      • K(b);N_SPINB(c),S_FLIGHT::S(B)
      • K(b);OGATEB,S_FLIGHT,XS(E)::QAB1(G)
      • B(c);N_SPINB(c),XQ(G)::S(B)
      • B(a);OGATE::QAB(G)
      • S(d);N_GUARD::QAB1(G),XB(c)
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