MESON Chess Problem Database

Problem Display
PID: 44841 (1B1RK3/8/3bpNp1/1p2k1p1/1P1N1q2/3P1R2/Q7/8 w - - 0 1)

Andrews, Henry John Clinton

Chess Chips, 1878

1B1RK3/8/3bpNp1/1p2k1p1/1P1N1q2/3P1R2/Q7/8

#2

9 + 7

3316 Chess Problem Text Book 1887

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qa1#
      • 2.Qb2#
    • 1...Qd2
      • 2.Sc6#
    • 1...Qh2
      • 2.Sc6#
    • 1...Qe3
      • 2.Sc6#
    • 1...Qg3
      • 2.Sc6#
    • 1...Qxd4
      • 2.Sd7#
    • 1...Qg4
      • 2.Sc6#
    • 1...Qh4
      • 2.Sc6#
    • 1...Qxf6
      • 2.Sc6#
    • 1...Bc7
      • 2.Qxe6#
    • 1...Bxb8
      • 2.Qxe6#
  • Tries
    • 1.Sg4+?
      • 1...Qxg4
        • 2.Sc6#
      • 1...Kxd4!
    • 1.Bxd6+?
      • 1...Kxd4
        • 2.Qa1#
        • 2.Qb2#
      • 1...Kxf6!
    • 1.Qe2+?
      • 1...Kxd4
        • 2.Qb2#
      • 1...Qe3
        • 2.Sc6#
        • 2.Qxe3#
      • 1...Qe4
        • 2.Sc6#
        • 2.Qxe4#
      • 1...Kxf6!
  • Keys
    • 1.Qh2!
      • 1...Kxd4
        • 2.Qb2#
      • 1...Kxf6
        • 2.Qh8#
      • 1...Qxh2
        • 2.Sc6#
      • 1...Bxb8
        • 2.Sg4#
      • 1...Qg3
        • 2.Sc6#
      • 1...Bc7
        • 2.Sg4#
      • 1...g4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(a);::S(E)
    • Q(a);SBLOCK,XS(E)::S(F)
    • Q(a);XS(F)::S(E)
    • B(e);::QAR1(A),XP(f)
    • B(e);N_SPINB(e),XB(G)::QAR1(A),XP(f)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • Q(a);XS(F)::S(E)
      • Refutation
        • K(c);S_FLIGHT,XS(E)
    • Try
      • B(G);CHECK,XB(e)
      • Refutation
        • K(c);P_SPINQ(a),S_FLIGHT,XS(F)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(E)::QAB(A)
      • Refutation
        • K(c);N_SPINB(e),P_SPINQ(a),S_FLIGHT,XS(F)
  • Actual
    • Q(A);P_PINQ(a)
    • Vars
      • K(c);N_SPINQ(a),OGATEB,S_FLIGHT,XS(E)::QAB(A)
      • K(c);N_SPINB(e),OGATEB,S_FLIGHT,XS(F)::QAB(A)
      • Q(a);N_SPINQ(a),XQ(A)::S(E)
      • B(e);N_SPINB(e),XB(G)::S(F)
      • Q(a);::S(E)
      • B(e);::S(F)
      • P(d);N_GUARD::QAB1(A),XQ(a)
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