MESON Chess Problem Database

Problem Display
PID: 269841 (3r2qR/4R1Pp/3k4/3Pp3/1P5B/2n1nQ2/3N4/7K w - - 0 1)

Westbury, Eric Ernest

Reading Observer, 1899

3r2qR/4R1Pp/3k4/3Pp3/1P5B/2n1nQ2/3N4/7K

#2

9 + 7

17417 Westbury Scrapbooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qf7
      • 2.Rxd8#
    • 1...Qxg7
      • 2.Rxd8#
    • 1...Sd1
      • 2.Sc4#
    • 1...Sf1
      • 2.Sc4#
    • 1...Sc2
      • 2.Sc4#
    • 1...Sg2
      • 2.Sc4#
    • 1...Sc4
      • 2.Sxc4#
    • 1...Sg4
      • 2.Sc4#
    • 1...Sf5
      • 2.Sc4#
  • Tries
    • 1.Qf6+?
      • 1...Qe6
        • 2.Rxd8#
        • 2.Qxe6#
      • 1...Kxd5!
  • Keys
    • 1.Qf7!
      • 1...Qxf7
        • 2.Rxd8#
      • 1...Qxg7
        • 2.Rxd8#
        • 2.Qe6#
      • 1...Qxh8
        • 2.Qe6#
      • 1...Scxd5
        • 2.Re6#
      • 1...Sexd5
        • 2.Re6#
      • 1...Rd7
        • 2.Rxd7#
      • 1...Qe8
        • 2.Qe6#
      • 1...Qf8
        • 2.Qe6#
      • 1...Ra8
        • 2.Rd7#
      • 1...Rb8
        • 2.Rd7#
      • 1...Rc8
        • 2.Rd7#
      • 1...Re8
        • 2.Rd7#
      • 1...Rf8
        • 2.Rd7#
      • 1...Sb1
        • 2.Se4#
      • 1...Scd1
        • 2.Se4#
      • 1...Sa2
        • 2.Se4#
      • 1...Se2
        • 2.Se4#
      • 1...Sa4
        • 2.Se4#
      • 1...Se4
        • 2.Sxe4#
      • 1...Sb5
        • 2.Se4#
      • 1...Sed1
        • 2.Sc4#
      • 1...Sf1
        • 2.Sc4#
      • 1...Sc2
        • 2.Sc4#
      • 1...Sg2
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sg4
        • 2.Sc4#
      • 1...Sf5
        • 2.Sc4#
      • 1...e4
        • 2.Bg3#
      • 1...h5
        • 2.Rh6#
      • 1...h6
        • 2.Rxh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 21
    • REMOVED MATES = 1
  • Sets
    • Q(g);OGATE::R(I),XR(f)
    • Q(g);OGATE,XP(H)::R(I),XR(f)
    • S(b);N_GUARD::S(B)
    • S(b);N_GUARD::S(B),XS(b)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • K(d);P-FLIGHT,XP(F)
  • Actual
    • Q(C);
    • Vars
      • Q(g);OGATE,XQ(C)::R(I),XR(f)
      • Q(g);N_GUARD,XR(I)::QAR1(C)
      • S(a);SBLOCK,XP(F)::R1(G)
      • S(b);SBLOCK,XP(F)::R1(G)
      • R(f);N_GUARD::R1(G),XR(f)
      • Q(g);N_GUARD::QAR1(C)
      • R(f);N_GUARD::R1(G)
      • S(a);N_GUARD::S(B)
      • S(a);N_GUARD::S(B),XS(a)
      • S(b);N_GUARD::S(B)
      • S(b);N_GUARD::S(B),XS(b)
      • P(c);OGATEB::B(E)
      • P(e);OGATE::R(I)
      • P(e);OGATE::R(I),XP(e)
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