MESON Chess Problem Database

Problem Display
PID: 129805 (5K2/8/4pN2/2B1krQ1/5p1b/4N3/4bP2/8 w - - 0 1)

Barda, Olaf Martinius (AKA OM Olsen)

Norsk Skakbladet, 1926

5K2/8/4pN2/2B1krQ1/5p1b/4N3/4bP2/8

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Sc4#
    • 1...Bf1
      • 2.Sg4#
    • 1...Bd3
      • 2.Sg4#
    • 1...Bf3
      • 2.Sc4#
    • 1...Bc4
      • 2.Sxc4#
      • 2.Sg4#
    • 1...Bg4
      • 2.Sc4#
      • 2.Sxg4#
    • 1...Bb5
      • 2.Sg4#
    • 1...Bh5
      • 2.Sc4#
    • 1...Ba6
      • 2.Sg4#
    • 1...fxe3
      • 2.f4#
    • 1...f3
      • 2.Sg4#
  • Keys
    • 1.f3!
      • threat
        • 2.Sg4#
      • 1...Rxg5
        • 2.Sd7#
      • 1...Bxf3
        • 2.Sc4#
      • 1...fxe3
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • B(a);N_GUARD::S(B)
    • P(b);OGATE,XS(B)::P(A)
    • P(b);S_CUTB(a)::S(B)
  • Actual
    • P(A);
    • Threat
      • S(B)
    • Vars
      • R(e);N_PINS(E),N_SPINR(e),XQ(D)::S(E)
      • B(a);N_GUARD,XP(A)::S(B)
      • P(b);OGATE,XS(B)::P(A)
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