MESON Chess Problem Database

Problem Display
PID: 17123 (nn4Q1/4R3/1Pk2P2/8/P1N5/3N3b/6p1/6K1 w - - 0 1)

Laws, Benjamin Glover

1st Prize, Jamaica Gleaner, 1892

nn4Q1/4R3/1Pk2P2/8/P1N5/3N3b/6p1/6K1

#2

8 + 5

15 British Chess Magazine 1896
15 British Chess Magazine 1910
3360 Simple Two-move Themes 1924
3571 An English Bohemian 1933

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Qxe6#
    • 1...Bd7
      • 2.Qxg2#
    • 1...Bc8
      • 2.Qxg2#
    • 1...Sc7
      • 2.Rxc7#
    • 1...Sa6
      • 2.Qxa8#
    • 1...Sd7
      • 2.Qxa8#
  • Tries
    • 1.Qd8?
      • threat
        • 2.Sa5#
        • 2.Sce5#
        • 2.Qd6#
      • 1...Sc7
        • 2.Rxc7#
      • 1...Sd7
        • 2.Qxa8#
      • 1...Bd7!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Qd5#
      • 1...Kxd7
        • 2.Sde5#
      • 1...Bxd7
        • 2.Qxg2#
      • 1...Sxb6
        • 2.Sce5#
      • 1...Sxd7
        • 2.Qxa8#
      • 1...Sc7
        • 2.Rxc7#
      • 1...Be6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(b);N_GUARD::QAR2(H),XB(b)
    • B(b);N_GUARD::QAB(H),XP(a)
    • S(d);N_GUARD::R1(G),XS(d)
    • S(e);OGATE::QAB(H),XS(d)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(3)
      • Vars
        • S(d);N_GUARD::R1(G),XS(d)
        • S(e);OGATE::QAB(H),XS(d)
      • Refutation
        • B(b);
  • Actual
    • R(G);
    • Threat
      • QAB1(H)
    • Vars
      • K(c);S_FLIGHT,XR(G)::S(B)
      • B(b);N_GUARD,SBLOCK,XR(G)::QAB(H),XP(a)
      • S(d);SBLOCK,XP(E)::S(D)
      • S(e);OGATE,SBLOCK,XR(G)::QAB(H),XS(d)
      • S(d);N_GUARD::R1(G),XS(d)
      • B(b);N_GUARD::QAR2(H),XB(b)
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