MESON Chess Problem Database

Problem Display
PID: 23694 (8/8/4P1K1/8/6Nk/5Q1b/8/7n w - - 0 1)

Shanahan, Ian

More Fun with Chess Miniatures, 2000

8/8/4P1K1/8/6Nk/5Q1b/8/7n

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sh6?
      • 1...Bf5+
        • 2.Sxf5#
      • 1...Bf1
        • 2.Sf5#
        • 2.Qg4#
      • 1...Bg2
        • 2.Sf5#
        • 2.Qg4#
      • 1...Bg4
        • 2.Qxg4#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf6#
      • 1...Bxe6!
  • Keys
    • 1.Se3!
      • 1...Bf5+
        • 2.Sxf5#
      • 1...Bxe6
        • 2.Sg2#
      • 1...Bf1
        • 2.Sf5#
        • 2.Qg4#
      • 1...Bg2
        • 2.Sxg2#
        • 2.Sf5#
        • 2.Qg4#
      • 1...Bg4
        • 2.Sg2#
        • 2.Qxg4#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • B(b);CHECK,N_GUARD::S(B),XB(b)
        • B(b);N_GUARD::QAR1(A),XB(b)
        • S(a);N_GUARD::QAB(A),XS(a)
        • S(a);SBLOCK::QAB(A)
      • Refutation
        • B(b);XP(C)
  • Actual
    • S(B);
    • Vars
      • B(b);CHECK,N_GUARD::S(B),XB(b)
      • B(b);N_GUARD,XP(C)::S(B)
      • S(a);N_GUARD::QAB(A),XS(a)
      • S(a);SBLOCK::QAB(A)
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