MESON Chess Problem Database

Problem Display
PID: 141859 (4Q3/8/8/3N3B/8/npBkp3/6K1/2b5 w - - 0 1)

Lane, Henry Fitzgerald William

The Field, 1898

(First published on Sat Aug 20 1898)

4Q3/8/8/3N3B/8/npBkp3/6K1/2b5

#2

5 + 5

14867 BCPS Library 2011
15239 Valois Notebooks 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kc2
      • 2.Qg6#
      • 2.Qe4#
    • 1...Sc4
      • 2.Qg6#
    • 1...e2
      • 2.Qxe2#
  • Tries
    • 1.Sb4+?
      • 1...Kc4
        • 2.Qc6#
      • 1...Kxc3!
    • 1.Be2+?
      • 1...Kc2
        • 2.Qg6#
        • 2.Qe4#
      • 1...Kxe2!
    • 1.Bf3?
      • threat
        • 2.Qe4#
      • 1...Kc2
        • 2.Qg6#
        • 2.Qe4#
      • 1...Kc4!
    • 1.Bg6+?
      • 1...Kc4
        • 2.Qc6#
      • 1...Ke2!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Sb4#
      • 1...Kc2
        • 2.Qg6#
      • 1...Ke4
        • 2.Bg6#
      • 1...Sc2
        • 2.Sf4#
      • 1...Sc4
        • 2.Qg6#
      • 1...e2
        • 2.Bg6#

This anticipates 156284(1903)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::QAB(E)
    • P(e);OGATE::QAB1(E),XP(e)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR2(E)
      • Refutation
        • K(d);P-FLIGHT,XB(B)
    • Try
      • B(D);CHECK
      • Refutation
        • K(d);P_SPINP(e),S_FLIGHT,XB(D)
    • Try
      • B(D);
      • Threat
        • QAB1(E)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR2(E)
      • Refutation
        • K(d);P_SPINP(e),S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • S(C)
    • Vars
      • K(d);S_FLIGHT::QAB(E)
      • K(d);S_FLIGHT::B(D)
      • S(b);SBLOCK::S(C)
      • S(b);SBLOCK::QAB(E)
      • P(e);SBLOCK::B(D)
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