MESON Chess Problem Database

Problem Display
PID: 5018 (4n3/1Q6/6p1/2ppNkPN/R2bR2K/4p3/4n1P1/8 w - - 0 1)

Locock, Charles Dealtry

Brighton Society, 1897

4n3/1Q6/6p1/2ppNkPN/R2bR2K/4p3/4n1P1/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qd7#
    • 1...Ba1
      • 2.Qc8#
      • 2.Qd7#
    • 1...Bb2
      • 2.Qc8#
      • 2.Qd7#
    • 1...Bc3
      • 2.Qc8#
      • 2.Qd7#
    • 1...Bxe5
      • 2.Qc8#
      • 2.Qd7#
  • Tries
    • 1.Sg3+?
      • 1...Ke6
        • 2.Qd7#
      • 1...Sxg3!
    • 1.Qxd5?
      • threat
        • 2.g4#
      • 1...Sg3
        • 2.Sxg3#
        • 2.Rf4#
      • 1...Sf6
        • 2.Sg7#
      • 1...gxh5!
    • 1.g4+?
      • 1...Ke6
        • 2.Qd7#
      • 1...Kxe4!
  • Keys
    • 1.Sc4!
      • 1...Kxe4
        • 2.Qb1#
      • 1...dxc4
        • 2.g4#
      • 1...dxe4
        • 2.Qc8#
        • 2.Qd7#
      • 1...gxh5
        • 2.Qh7#
      • 1...Be5
        • 2.Rxe5#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Ba1
        • 2.Sxe3#
      • 1...Bb2
        • 2.Sxe3#
      • 1...Bc3
        • 2.Sxe3#
      • 1...Bf6
        • 2.Sxe3#
      • 1...Bg7
        • 2.Sxe3#
      • 1...Bh8
        • 2.Sxe3#
      • 1...Sc1
        • 2.Sg3#
      • 1...Sg1
        • 2.Sg3#
      • 1...Sc3
        • 2.Sg3#
      • 1...Sg3
        • 2.Sxg3#
      • 1...Sf4
        • 2.Sg3#
      • 1...Sf6
        • 2.Sd6#
      • 1...Sc7
        • 2.Sd6#
      • 1...Sg7
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 19
    • REMOVED MATES = 1
  • Sets
    • K(f);S_FLIGHT::QAB1(H)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB1(H)
      • Refutation
        • S(a);XS(G)
    • Try
      • Q(H);XP(e)
      • Threat
        • P(A)
      • Vars
        • S(h);N_GUARD::S(G)
      • Refutation
        • P(g);XS(G)
    • Try
      • P(A);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB1(H)
      • Refutation
        • K(f);P_SPINB(c),P_SPINP(e),S_FLIGHT,XR(C)
  • Actual
    • S(E);
    • Vars
      • K(f);OGATEB,P_SPINP(e),S_FLIGHT,XR(C)::QAB(H)
      • P(e);XS(E)::P(A)
      • P(g);OGATEB,XS(G)::QAB(H)
      • B(c);N_GUARD::R1(C),XB(c)
      • S(h);N_GUARD::S(E),XS(h)
      • B(c);N_GUARD::S(E),XP(b)
      • B(c);N_GUARD,P_PINP(F)::S(E),XP(b)
      • S(a);N_GUARD::S(G)
      • S(a);N_GUARD::S(G),XS(a)
      • S(h);N_GUARD::S(E)
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