MESON Chess Problem Database

Problem Display
PID: 226396 (6Q1/3p3q/1p2ppp1/8/R6P/br1nN3/8/3N1KBk w - - 0 1)

Lawton, Howard

Sunday Chronicle, 1945

(First published on Sun May 13 1945)

6Q1/3p3q/1p2ppp1/8/R6P/br1nN3/8/3N1KBk

#2

7 + 10

15239 Valois Notebooks 2020
5454 Near Snap 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh4
      • 2.Rxh4#
    • 1...Bd6
      • 2.Qa8#
    • 1...Sc1
      • 2.Sf2#
    • 1...Se1
      • 2.Sf2#
    • 1...Sb2
      • 2.Sf2#
    • 1...Sf2
      • 2.Sxf2#
    • 1...Sb4
      • 2.Sf2#
    • 1...Sf4
      • 2.Sf2#
    • 1...Sc5
      • 2.Sf2#
    • 1...Se5
      • 2.Sf2#
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sg3#
      • 1...Qxh4
        • 2.Rxh4#
      • 1...exf5
        • 2.Qd5#
      • 1...gxf5
        • 2.Qg2#
      • 1...Bd6
        • 2.Qa8#
      • 1...Sc1
        • 2.Sf2#
      • 1...Se1
        • 2.Sf2#
      • 1...Sb2
        • 2.Sf2#
      • 1...Sf2
        • 2.Sxf2#
      • 1...Sb4
        • 2.Sf2#
      • 1...Sf4
        • 2.Sf2#
      • 1...Sc5
        • 2.Sf2#
      • 1...Se5
        • 2.Sf2#

This anticipates 273099(1960)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(j);OGATE,XP(F)::R(E),XQ(j)
    • B(b);S_CUTP(i)::QAB(G)
    • S(d);N_GUARD::S(A)
    • S(d);N_GUARD::S(A),XS(d)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • Q(j);OGATE,XP(F)::R(E),XQ(j)
      • P(f);OGATE,XS(D)::QAB(G)
      • P(h);OGATE,XS(D)::QAB1(G)
      • B(b);S_CUTP(i)::QAB(G)
      • S(d);N_GUARD::S(A)
      • S(d);N_GUARD::S(A),XS(d)
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