MESON Chess Problem Database

Problem Display
PID: 121404 (8/3pb1r1/8/R2BkN2/8/8/K2P1Q2/8 w - - 0 1)

Kotrc, Jan

Casopis ceskoslovenskych sachistu, 1907

8/3pb1r1/8/R2BkN2/8/8/K2P1Q2/8

#2

6 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.d4#
  • Tries
    • 1.Qf4+?
      • 1...Kf6
        • 2.Sh4#
      • 1...Kxf4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sc4#
      • 1...Kxd6
        • 2.Qf4#
      • 1...Bxd6
        • 2.d4#
      • 1...Rg4
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(c);SBLOCK::P(B)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR(C)+S(F)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(a);S_FLIGHT,XS(F)::QAB(C)
      • B(c);SBLOCK,XS(F)::P(B)
      • R(d);N_GUARD::S(F)
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