MESON Chess Problem Database

Problem Display
PID: 246282 (5n2/2nN2b1/2K3p1/Q7/2N1k2P/4P3/1P6/3B4 w - - 0 1)

Grabowski, Kazimierz

Tidskrift for Schack, 1917

5n2/2nN2b1/2K3p1/Q7/2N1k2P/4P3/1P6/3B4

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sa6
      • 2.Qd5#
    • 1...Sce6
      • 2.Qd5#
    • 1...Sa8
      • 2.Qd5#
    • 1...Se8
      • 2.Qd5#
  • Tries
    • 1.Sf6+?
      • 1...Kd3
        • 2.Qc3#
      • 1...Bxf6!
    • 1.Qd2?
      • threat
        • 2.Sd6#
        • 2.Qc2#
      • 1...Sxd7
        • 2.Qc2#
      • 1...Be5
        • 2.Qc2#
      • 1...Sb5
        • 2.Qc2#
        • 2.Qd5#
      • 1...Se8
        • 2.Qc2#
        • 2.Qd5#
      • 1...Kf5!
    • 1.Qa4?
      • threat
        • 2.Qc2#
      • 1...Kd3
        • 2.Sc5#
        • 2.Qc2#
      • 1...Kf5!
    • 1.Qf5+?
      • 1...gxf5
        • 2.Sc5#
      • 1...Kxf5!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qb1#
      • 1...Kd3
        • 2.Sc5#
      • 1...Kf5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(c);N_GUARD::QAB1(F),XS(c)
    • S(c);N_GUARD::QAB1(F)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • B(d);XS(H)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);XS(H)::QAB(F)
        • B(d);::QAB(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • P(b);SBLOCK,XQ(F)::S(H)
      • Refutation
        • K(a);S_FLIGHT,XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAB(F)
    • Vars
      • K(a);S_FLIGHT::S(H)
      • K(a);S_FLIGHT::S(D)
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