MESON Chess Problem Database

Problem Display
PID: 156711 (7b/2p5/5P1Q/2KPkq2/5N1B/3B4/8/8 w - - 0 1)

Burke, R St G

British Chess Magazine, 1905

7b/2p5/5P1Q/2KPkq2/5N1B/3B4/8/8

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qh3
      • 2.Sg6#
    • 1...Qe6
      • 2.Sg6#
    • 1...Qg6
      • 2.Sxg6#
    • 1...Qd7
      • 2.Sg6#
    • 1...Qc8
      • 2.Sg6#
    • 1...Qg5
      • 2.Qxg5#
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qxf5#
      • 1...Kxf4
        • 2.Qg3#
      • 1...Qxd3
        • 2.Sxd3#
      • 1...Qxg6
        • 2.Sxg6#
      • 1...Qxf4
        • 2.Qe8#
      • 1...Qxf6
        • 2.Qe4#
      • 1...Qh3
        • 2.Qe4#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qg4
        • 2.Qe4#
      • 1...Qe6
        • 2.Qe4#
      • 1...Qd7
        • 2.Qe4#
      • 1...Qc8
        • 2.Qe4#
      • 1...Qg5
        • 2.Qxg5#
      • 1...Qh5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_GUARD::S(B)
    • Q(b);N_GUARD::S(B),XQ(b)
    • Q(b);OGATEB::QAR2(G),XQ(b)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G),XQ(b)
    • Vars
      • K(a);OGATEB,P_PINP(E),S_FLIGHT,XS(B)::QAB1(G)
      • Q(b);XB(A)::S(B),XQ(b)
      • Q(b);XQ(G)::S(B),XQ(b)
      • Q(b);N_GUARD,SBLOCK,XS(B)::QAR(G)
      • Q(b);OGATE,XP(F)::QAR1(G)
      • Q(b);OGATE::QAR1(G)
      • Q(b);OGATE::QAR1(G),XQ(b)
      • Q(b);OGATEB::QAR2(G),XQ(b)
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Developed and maintained by Brian Stephenson.
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