MESON Chess Problem Database

Problem Display
PID: 18547 (4n3/8/8/1Q3N1n/4k3/4B3/5K2/8 w - - 0 1)

Gruber, Bratoljub

1st Prize, Sahovski Glasnik, 1956

4n3/8/8/1Q3N1n/4k3/4B3/5K2/8

#2

4 + 3

3713 Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Sxg3#
    • 1...Sf4
      • 2.Sg3#
    • 1...Shf6
      • 2.Sg3#
    • 1...Shg7
      • 2.Sg3#
    • 1...Sd6
      • 2.Sxd6#
    • 1...Sef6
      • 2.Sd6#
    • 1...Sc7
      • 2.Sd6#
    • 1...Seg7
      • 2.Sd6#
  • Tries
    • 1.Ke2?
      • 1...Sg3+
        • 2.Sxg3#
      • 1...Shf6
        • 2.Sg3#
      • 1...Shg7
        • 2.Sg3#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Sef6
        • 2.Sd6#
      • 1...Sc7
        • 2.Sd6#
      • 1...Seg7
        • 2.Sd6#
      • 1...Sf4+!
  • Keys
    • 1.Se7!
      • threat
        • 2.Qd5#
        • 2.Qf5#
      • 1...Sg3
        • 2.Qd5#
      • 1...Sf4
        • 2.Qf5#
      • 1...Shf6
        • 2.Qf5#
      • 1...Shg7
        • 2.Qd5#
      • 1...Sd6
        • 2.Qd5#
      • 1...Sef6
        • 2.Qf5#
      • 1...Sc7
        • 2.Qf5#
      • 1...Seg7
        • 2.Qd5#

Anticipated by 24367(1924)

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 8
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::S(D),XS(b)
    • S(b);N_GUARD::S(D)
    • S(c);N_GUARD::S(D),XS(c)
    • S(c);N_GUARD::S(D)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(b);CHECK,N_GUARD::S(D),XS(b)
        • S(b);N_GUARD::S(D)
        • S(c);N_GUARD::S(D),XS(c)
        • S(c);N_GUARD::S(D)
      • Refutation
        • S(b);CHECK
  • Actual
    • S(D);
    • Threat
      • DUALS(2)
    • Vars
      • S(b);::QAB1(C)
      • S(c);::QAB1(C)
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Developed and maintained by Brian Stephenson.
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