MESON Chess Problem Database

Problem Display
PID: 119605 (8/2n5/Q6N/3n1p1N/3pkB2/8/8/1bKB4 w - - 0 1)

Mach, Julius Zdenek

Slovan, 1902

8/2n5/Q6N/3n1p1N/3pkB2/8/8/1bKB4

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qc4#
  • Tries
    • 1.Bc2+?
      • 1...Kf3
        • 2.Qf1#
      • 1...d3
        • 2.Qxd3#
      • 1...Bxc2!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Sf2#
      • 1...Sxf4
        • 2.Shf6#
      • 1...fxg4
        • 2.Qg6#
      • 1...Sc3
        • 2.Sgf6#
      • 1...Se3
        • 2.Sgf6#
      • 1...Sb4
        • 2.Sgf6#
      • 1...Sb6
        • 2.Sgf6#
      • 1...Sf6
        • 2.Sgxf6#
      • 1...Se7
        • 2.Sgf6#
      • 1...d3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB::QAR2(E)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(E)
        • P(b);P_SPINP(b)::QAB1(E),XP(b)
      • Refutation
        • B(a);XB(B)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • S(d);N_GUARD,SBLOCK,XB(C)::S(D)
      • P(e);OGATEB,XS(F)::QAB(E)
      • S(d);N_GUARD::S(F)
      • S(d);N_GUARD::S(F),XS(d)
      • P(b);OGATEB::QAR2(E)
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