MESON Chess Problem Database

Problem Display
PID: 246281 (1n6/4p2p/4P2P/2B1k3/4NN1P/7b/3P1R2/KQ6 w - - 0 1)

Lundqvist, Folke

Tidskrift for Schack, 1917

1n6/4p2p/4P2P/2B1k3/4NN1P/7b/3P1R2/KQ6

#2

10 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.d4#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Qb2#
      • 1...Kf6
        • 2.Bd4#
        • 2.Qb2#
      • 1...Sc6!
    • 1.Bd4+?
      • 1...Kf5
        • 2.Sf6#
      • 1...Kxd4!
    • 1.Qa2?
      • threat
        • 2.Qd5#
      • 1...Kxe4
        • 2.Qd5#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...Kf5!
    • 1.Qb3?
      • threat
        • 2.Qd5#
      • 1...Kxe4
        • 2.Qd5#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...Kf5!
  • Keys
    • 1.Sf6!
      • 1...Kxf6
        • 2.Bd4#
      • 1...Bxe6
        • 2.Sd3#
      • 1...exf6
        • 2.d4#
      • 1...Bf1
        • 2.Sg4#
      • 1...Bg2
        • 2.Sg4#
      • 1...Bg4
        • 2.Sxg4#
      • 1...Bf5
        • 2.Qb2#
      • 1...Sa6
        • 2.Sd7#
      • 1...Sc6
        • 2.Sd7#
      • 1...Sd7
        • 2.Sxd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::P(C)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB(B)
      • Refutation
        • S(e);
    • Try
      • B(H);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB(B)+S(E)
      • Refutation
        • K(b);S_FLIGHT,XB(H)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT,XS(E)::QAB1(B)
        • B(a);OGATE,XP(I)::QAR1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT,XS(E)::QAB1(B)
        • B(a);OGATE,XP(I)::QAR1(B),XB(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(b);S_FLIGHT,XS(E)::B(H)
      • B(a);SBLOCK,XP(I)::S(F)
      • P(c);SBLOCK,XS(E)::P(C)
      • B(a);N_GUARD::S(E)
      • B(a);N_GUARD::S(E),XB(a)
      • B(a);SBLOCK::QAB(B)
      • S(e);N_GUARD::S(E)
      • S(e);N_GUARD::S(E),XS(e)
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