MESON Chess Problem Database

Problem Display
PID: 17837 (4K3/1Nb5/1p2k3/1Q6/4N3/8/8/8 w - - 0 1)

Larsson, Lennart

Eskilstuna Kuriren, 1951

4K3/1Nb5/1p2k3/1Q6/4N3/8/8/8

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Sd8#
    • 1...Bg3
      • 2.Sd8#
    • 1...Bf4
      • 2.Sd8#
    • 1...Be5
      • 2.Qd7#
    • 1...Bd6
      • 2.Sd8#
    • 1...Bb8
      • 2.Sd8#
    • 1...Bd8
      • 2.Sxd8#
  • Tries
    • 1.Qg5?
      • 1...Bh2
        • 2.Sd8#
      • 1...Bg3
        • 2.Sd8#
      • 1...Bf4
        • 2.Sd8#
      • 1...Bd6
        • 2.Sd8#
      • 1...Bb8
        • 2.Sd8#
      • 1...Bd8
        • 2.Sxd8#
      • 1...b5
        • 2.Sec5#
        • 2.Sbc5#
      • 1...Be5!
  • Keys
    • 1.Qh5!
      • 1...Be5
        • 2.Qf7#
      • 1...Bh2
        • 2.Sd8#
      • 1...Bg3
        • 2.Sd8#
      • 1...Bf4
        • 2.Sd8#
      • 1...Bd6
        • 2.Sd8#
      • 1...Bb8
        • 2.Sd8#
      • 1...Bd8
        • 2.Sxd8#
      • 1...b5
        • 2.Sbc5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD::S(C)
    • B(c);SBLOCK::QAB1(B)
    • B(c);N_GUARD::S(C),XB(c)
  • Tries
    • Try
      • Q(B);
      • Vars
        • B(c);N_GUARD::S(C)
        • B(c);N_GUARD::S(C),XB(c)
      • Refutation
        • B(c);
  • Actual
    • Q(B);
    • Vars
      • B(c);SBLOCK::QAB1(B)
      • B(c);N_GUARD::S(C)
      • B(c);N_GUARD::S(C),XB(c)
      • P(a);N_GUARD::S(C)
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