MESON Chess Problem Database

Problem Display
PID: 160752 (6r1/3P1k2/6pQ/1n3p2/BBpNN3/8/6K1/8 w - - 0 1)

Williams, Philip Hamilton

Reading Observer, 1904

6r1/3P1k2/6pQ/1n3p2/BBpNN3/8/6K1/8

#2

7 + 6

15351 SCPF/BCPS Black Books 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Qh7#
    • 1...Rb8
      • 2.Qh7#
    • 1...Rc8
      • 2.Qh7#
    • 1...Rd8
      • 2.Qh7#
    • 1...Re8
      • 2.Qh7#
    • 1...Rf8
      • 2.Qxf8#
      • 2.Qh7#
    • 1...c3
      • 2.Bb3#
    • 1...g5
      • 2.Qf6#
  • Tries
    • 1.Bxb5?
      • threat
        • 2.Bxc4#
      • 1...Rc8
        • 2.Qh7#
      • 1...Re8
        • 2.Qh7#
        • 2.dxe8Q#
      • 1...c3
        • 2.Bc4#
      • 1...fxe4!
    • 1.d8Q?
      • threat
        • 2.Sg5#
        • 2.Qe7#
        • 2.Qd7#
      • 1...fxe4
        • 2.Qe7#
      • 1...Re8
        • 2.Qh7#
      • 1...Rf8
        • 2.Qhxf8#
        • 2.Qh7#
        • 2.Qdxf8#
      • 1...Rg7
        • 2.Sg5#
        • 2.Qf8#
      • 1...Rh8
        • 2.Sg5#
      • 1...Sd6
        • 2.Sg5#
        • 2.Sxd6#
        • 2.Qf6#
        • 2.Qc7#
        • 2.Qd7#
      • 1...g5
        • 2.Qe7#
        • 2.Qhf6#
        • 2.Qd7#
      • 1...Rxd8!
  • Keys
    • 1.Bf8!
      • 1...Rxf8
        • 2.Qh7#
      • 1...Sxd4
        • 2.d8S#
      • 1...fxe4
        • 2.Qf4#
      • 1...Rg7
        • 2.Qxg7#
      • 1...Rh8
        • 2.Qg7#
      • 1...Sa3
        • 2.d8S#
      • 1...Sc3
        • 2.d8S#
      • 1...Sd6
        • 2.d8S#
      • 1...Sa7
        • 2.d8S#
      • 1...Sc7
        • 2.d8S#
      • 1...c3
        • 2.Bb3#
      • 1...f4
        • 2.Qxf4#
      • 1...g5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 5
  • Sets
    • R(f);N_GUARD::QAR2(F)
    • P(a);OGATEB::B(B)
    • P(d);OGATE::QAR1(F)
  • Tries
    • Try
      • B(B);XS(b)
      • Threat
        • B(B),XP(a)
      • Vars
        • R(f);N_GUARD::QAR2(F)
        • P(a);::B(B)
      • Refutation
        • P(c);XS(E)
    • Try
      • P(G);
      • Threat
        • DUALS(3)
      • Vars
        • P(c);XS(E)::QAR1(G)
        • R(f);N_GUARD::QAR2(F)
        • R(f);::S(E)
      • Refutation
        • R(f);XQ(G)
  • Actual
    • B(C);
    • Vars
      • R(f);N_GUARD,SBLOCK,XB(C)::QAR2(F)
      • S(b);XS(D)::P=S
      • P(c);OGATEB,XS(E)::QAR(F)
      • R(f);N_GUARD::QAR1(F),XR(f)
      • R(f);N_GUARD::QAR1(F)
      • S(b);::P=S
      • P(a);OGATEB::B(B)
      • P(c);OGATEB::QAR(F),XP(c)
      • P(d);OGATE::QAR1(F)
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