MESON Chess Problem Database

Problem Display
PID: 51088 (6K1/7Q/B1NpR3/1nnk4/R7/2p3B1/2P5/3N4 w - - 0 1)

Nix, John Gilbert

Burnley Express, 1881

6K1/7Q/B1NpR3/1nnk4/R7/2p3B1/2P5/3N4

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Qf7#
    • 1...Sa3
      • 2.Rxd6#
    • 1...Sd4
      • 2.Rxd6#
    • 1...Sa7
      • 2.Rxd6#
    • 1...Sc7
      • 2.Rxd6#
  • Tries
    • 1.Sxc3+?
      • 1...Kxe6
        • 2.Qf7#
      • 1...Sxc3
        • 2.Rxd6#
      • 1...Kxc6!
    • 1.Se3+?
      • 1...Kxe6
        • 2.Qf5#
        • 2.Qe7#
        • 2.Qf7#
      • 1...Kxc6!
    • 1.Rd4+?
      • 1...Kxe6
        • 2.Qf7#
      • 1...Sxd4
        • 2.Rxd6#
      • 1...Kxc6!
    • 1.Qh5+?
      • 1...Kxe6
        • 2.Qf7#
      • 1...Kxc6!
  • Keys
    • 1.Rc4!
      • 1...Kxc4
        • 2.Se3#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Kxe6
        • 2.Qf7#
      • 1...Sxa6
        • 2.Qe4#
      • 1...Sxe6
        • 2.Se3#
        • 2.Qe4#
      • 1...Sa3
        • 2.Rxd6#
      • 1...Sd4
        • 2.Rxd6#
      • 1...Sa7
        • 2.Rxd6#
      • 1...Sc7
        • 2.Rxd6#
      • 1...Sb3
        • 2.Qe4#
      • 1...Sd3
        • 2.Qe4#
      • 1...Sa4
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sb7
        • 2.Qe4#
      • 1...Sd7
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(d);OGATEB,S_FLIGHT,XR(G)::QAB1(H)
    • S(b);N_GUARD::R1(G),XP(e)
  • Tries
    • Try
      • S(A);CHECK,XP(a)
      • Vars
        • K(d);S_FLIGHT,XR(G)::QAB1(H)
        • S(b);XS(A)::R1(G),XP(e)
      • Refutation
        • K(d);P_SPINP(e),S_FLIGHT,XS(F)
    • Try
      • S(A);CHECK
      • Refutation
        • K(d);P_SPINP(e),S_FLIGHT,XS(F)
    • Try
      • R(D);CHECK
      • Vars
        • K(d);S_FLIGHT,XR(G)::QAB1(H)
        • S(b);XR(D)::R1(G),XP(e)
      • Refutation
        • K(d);P_SPINP(e),S_FLIGHT,XS(F)
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);OGATEB,S_FLIGHT,XR(G)::QAB1(H)
      • Refutation
        • K(d);P_SPINP(e),S_FLIGHT,XS(F)
  • Actual
    • R(D);
    • Vars
      • K(d);P_SPINS(b),S_FLIGHT,XR(D)::S(A)
      • K(d);OGATEB,P_SPINP(e),P_SPINS(c),S_FLIGHT,XS(F)::QAB1(H)
      • K(d);OGATEB,S_FLIGHT,XR(G)::QAB1(H)
      • S(c);N_GUARD,XB(E)::QAB1(H)
      • S(b);N_GUARD::R1(G),XP(e)
      • S(c);N_GUARD::QAB1(H)
      • S(c);N_GUARD::QAB1(H),XS(c)
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