MESON Chess Problem Database

Problem Display
PID: 117321 (8/4p3/5bPq/5Nnr/1p6/1pk5/5Q2/1n1K1B2 w - - 0 1)

Laws, Benjamin Glover

The Field, 1886

(First published on Sat Oct 16 1886)

8/4p3/5bPq/5Nnr/1p6/1pk5/5Q2/1n1K1B2

#2

5 + 9

6490 yacpdb 2009
15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Qxd4#
    • 1...Sd2
      • 2.Qxd2#
    • 1...Sa3
      • 2.Qd2#
    • 1...b2
      • 2.Qe3#
      • 2.Qc2#
  • Tries
    • 1.Qe1+?
      • 1...Sd2
        • 2.Qxd2#
      • 1...Kb2!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sb5#
      • 1...exd6
        • 2.Qxf6#
      • 1...Sd2
        • 2.Qxd2#
      • 1...b2
        • 2.Qe3#
      • 1...Sa3
        • 2.Qd2#
      • 1...Sf3
        • 2.Se4#
      • 1...Sh3
        • 2.Se4#
      • 1...Se4
        • 2.Sxe4#
      • 1...Se6
        • 2.Se4#
      • 1...Sf7
        • 2.Se4#
      • 1...Sh7
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • B(g);N_GUARD::QAB1(C),XB(g)
    • S(a);N_GUARD::QAB1(C),XS(a)
    • S(a);N_GUARD::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(C),XS(a)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • P(i);N_GUARD,XS(D)::QAB(C),XB(g)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • P(b);SBLOCK::QAR2(C)
      • S(a);N_GUARD::QAB1(C)
      • S(e);N_GUARD::S(D)
      • S(e);N_GUARD::S(D),XS(e)
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