MESON Chess Problem Database

Problem Display
PID: 254640 (7R/4n1p1/3np3/4k1B1/1P1NP1p1/3P4/5NK1/7Q w - - 0 1)

Carson, J Roy

Manchester Weekly Times, 1891

(First published on Fri Nov 6 1891)

7R/4n1p1/3np3/4k1B1/1P1NP1p1/3P4/5NK1/7Q

#2

9 + 6

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qa1#
    • 1...Sd5
      • 2.Sc6#
    • 1...Sf5
      • 2.Sc6#
    • 1...Sc6
      • 2.Sxc6#
    • 1...Sg6
      • 2.Sc6#
    • 1...Sc8
      • 2.Sc6#
    • 1...Sg8
      • 2.Sc6#
    • 1...g3
      • 2.Sf3#
  • Tries
    • 1.Qh2+?
      • 1...g3
        • 2.Sf3#
      • 1...Kxd4!
  • Keys
    • 1.Rd8!
      • 1...Kxd4
        • 2.Qa1#
      • 1...Sxe4
        • 2.Sxg4#
      • 1...Sc4
        • 2.Sxg4#
      • 1...Sb5
        • 2.Sxg4#
      • 1...Sdf5
        • 2.Sxg4#
      • 1...Sb7
        • 2.Sxg4#
      • 1...Sf7
        • 2.Sxg4#
      • 1...Sdc8
        • 2.Sxg4#
      • 1...Se8
        • 2.Sxg4#
      • 1...Sd5
        • 2.Sc6#
      • 1...Sef5
        • 2.Sc6#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sg6
        • 2.Sc6#
      • 1...Sec8
        • 2.Sc6#
      • 1...Sg8
        • 2.Sc6#
      • 1...g3
        • 2.Sf3#
      • 1...g6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XS(F)::QAB(A)
    • S(e);N_GUARD::S(F)
    • S(e);N_GUARD::S(F),XS(e)
    • P(a);N_GUARD::S(F)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • P(a);P_SPINP(a)::S(F)
      • Refutation
        • K(b);S_FLIGHT,XS(F)
  • Actual
    • R(I);
    • Vars
      • K(b);OGATEB,P_SPINS(c),S_FLIGHT,XS(F)::QAB(A)
      • S(c);XP(G)::S(B),XP(a)
      • S(c);::S(B),XP(a)
      • S(e);N_GUARD::S(F)
      • S(e);N_GUARD::S(F),XS(e)
      • P(a);N_GUARD::S(F)
      • P(f);OGATEB::QAB(A)
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