MESON Chess Problem Database

Problem Display
PID: 121483 (QN2r3/2q4B/4p3/1p1P4/1Bk5/1p3p2/2N5/5K2 w - - 0 1)

Karel, Jaroslav

Sachove listy, 1902

QN2r3/2q4B/4p3/1p1P4/1Bk5/1p3p2/2N5/5K2

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Qc6#
    • 1...Qg3
      • 2.Qc6#
    • 1...Qf4
      • 2.Qc6#
    • 1...Qa5
      • 2.Qc6#
    • 1...Qe5
      • 2.Qc6#
    • 1...Qxb8
      • 2.Qc6#
    • 1...Qd8
      • 2.Qc6#
    • 1...Qc6
      • 2.Qxc6#
    • 1...Qf7
      • 2.Qc6#
    • 1...Qg7
      • 2.Qc6#
    • 1...b2
      • 2.Qa2#
  • Keys
    • 1.Sc6!
      • threat
        • 2.Se3#
      • 1...Kxd5
        • 2.Se3#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...Qxh7
        • 2.Se5#
      • 1...bxc2
        • 2.Qa2#
      • 1...exd5
        • 2.Sa3#
      • 1...b2
        • 2.Qa2#
      • 1...Qf4
        • 2.Sa5#
      • 1...Qe5
        • 2.Sa5#
        • 2.Sxe5#
      • 1...Qb6
        • 2.Se5#
      • 1...Qa7
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • Q(f);N_GUARD::QAR2(F)
    • Q(f);N_GUARD,XS(G)::QAR2(F)
    • Q(f);N_GUARD::QAR2(F),XQ(f)
    • P(a);OGATEB::QAB(F)
  • Actual
    • S(G);
    • Threat
      • S(B)
    • Vars
      • K(c);S_FLIGHT,XP(D)::S(B)
      • Q(f);OGATE,XS(G)::QAR2(F),XQ(f)
      • Q(f);N_GUARD,XB(E)::S(G)
      • P(a);OGATEB,XS(B)::QAB(F)
      • P(e);SBLOCK,XP(D)::S(B)
      • P(a);OGATEB::QAB(F)
      • Q(f);N_GUARD::S(G)
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