MESON Chess Problem Database

Problem Display
PID: 20978 (4KB1k/8/5N1N/4n3/8/8/8/8 w - - 0 1)

Weenink, Henri Gerard Maria

Algemeen Handelsblad, 1915

4KB1k/8/5N1N/4n3/8/8/8/8

#2

4 + 2

16055 HGM Weenink (Euwe/Niemeijer/Rueb/Trotsenburg) 1932

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Sf7#
    • 1...Sf3
      • 2.Sf7#
    • 1...Sc4
      • 2.Sf7#
    • 1...Sg4
      • 2.Sf7#
    • 1...Sc6
      • 2.Sf7#
    • 1...Sg6
      • 2.Sf7#
    • 1...Sd7
      • 2.Sf7#
    • 1...Sf7
      • 2.Sxf7#
  • Tries
    • 1.Kd8?
      • 1...Sf7+
        • 2.Sxf7#
      • 1...Sd3
        • 2.Sf7#
      • 1...Sf3
        • 2.Sf7#
      • 1...Sc4
        • 2.Sf7#
      • 1...Sg4
        • 2.Sf7#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sd7
        • 2.Sf7#
      • 1...Sc6+!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Bg7#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • S(a);N_GUARD::S(B)
    • S(a);N_GUARD::S(B),XS(a)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(a);CHECK,N_GUARD::S(B),XS(a)
        • S(a);N_GUARD::S(B)
      • Refutation
        • S(a);CHECK
  • Actual
    • S(B);
    • Threat
      • B(D)
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