MESON Chess Problem Database

Problem Display
PID: 154424 (6Q1/7p/5p2/2p1Nkn1/2K1Rr1P/4bN1P/5R2/8 w - - 0 1)

Burkinshaw, TE

Sheffield Guardian (The), 1910

(First published on Fri Sep 23 1910)

6Q1/7p/5p2/2p1Nkn1/2K1Rr1P/4bN1P/5R2/8

#2

8 + 7

15239 Valois Notebooks 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe4
      • 2.Qc8#
    • 1...Se6
      • 2.Qxh7#
  • Tries
    • 1.Sd4+?
      • 1...Kxe4
        • 2.Qd5#
      • 1...Bxd4
        • 2.Rfxf4#
      • 1...cxd4!
    • 1.Sxg5?
      • threat
        • 2.Qe6#
        • 2.Qxh7#
        • 2.Qc8#
      • 1...fxe5
        • 2.Qe6#
        • 2.Qf7#
      • 1...h5
        • 2.Qe6#
        • 2.Qh7#
        • 2.Qg6#
        • 2.Qc8#
      • 1...h6
        • 2.Qe6#
        • 2.Qh7#
        • 2.Qg6#
        • 2.Qc8#
      • 1...fxg5!
    • 1.Qxh7+?
      • 1...Ke6
        • 2.Qd7#
      • 1...Sxh7!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sd6#
      • 1...Rxe4+
        • 2.Sd4#
      • 1...Kxe4
        • 2.Sd6#
      • 1...Sxe4
        • 2.Sh6#
      • 1...Sxf7
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(e);N_GUARD,SBLOCK,XR(E)::QAB(H)
    • S(e);N_GUARD,SBLOCK::QAB(H),XP(g)
  • Tries
    • Try
      • S(B);CHECK,N_SPINR(E),P_PINR(b)
      • Vars
        • K(d);N_SPINR(b),S_FLIGHT,XR(E)::QAB1(H)
        • B(a);XS(B)::R1(A),XR(b)
      • Refutation
        • P(c);XS(B)
    • Try
      • S(B);P_PINR(b),XS(e)
      • Threat
        • DUALS(3)
      • Refutation
        • P(f);XS(B)
    • Try
      • Q(H);CHECK,XP(g)
      • Vars
        • K(d);S_FLIGHT::QAB1(H)
      • Refutation
        • S(e);XQ(H)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • R(b);CHECK,SBLOCK,XR(E)::R(A)+S(B),DCHECK
      • K(d);S_FLIGHT,XR(E)::S(G)
      • S(e);SBLOCK,XR(E)::S(G)
      • S(e);N_GUARD,XS(G)::QAB(H),XP(g)
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