MESON Chess Problem Database

Problem Display
PID: 92109 (2bb1NK1/1PP1kP2/q3p1p1/2NrQ3/5n2/8/8/8 w - - 0 1)

Wielgos, Oskar

Deutsche Schachblatter, 1980

2bb1NK1/1PP1kP2/q3p1p1/2NrQ3/5n2/8/8/8

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.bxc8S#
    • 1...Qe2
      • 2.bxc8S#
    • 1...Qd3
      • 2.bxc8S#
    • 1...Qc4
      • 2.bxc8S#
    • 1...Qb5
      • 2.bxc8S#
    • 1...Qa1
      • 2.bxc8S#
    • 1...Qa2
      • 2.bxc8S#
    • 1...Qa3
      • 2.bxc8S#
    • 1...Qa4
      • 2.bxc8S#
    • 1...Qa5
      • 2.bxc8S#
    • 1...Qb6
      • 2.bxc8S#
    • 1...Qc6
      • 2.bxc8S#
    • 1...Qd6
      • 2.bxc8S#
    • 1...Qa7
      • 2.bxc8S#
    • 1...Rd6
      • 2.Qg5#
    • 1...Se2
      • 2.Sxg6#
    • 1...Sg2
      • 2.Sxg6#
    • 1...Sd3
      • 2.Sxg6#
    • 1...Sh3
      • 2.Sxg6#
    • 1...Sh5
      • 2.Sxg6#
  • Keys
    • 1.Sfxe6!
      • threat
        • 2.f8Q#
      • 1...Qxe6
        • 2.bxc8S#
      • 1...Rxc5
        • 2.cxd8Q#
      • 1...Bxe6
        • 2.c8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 20
  • Sets
    • Q(c);N_GUARD::PXB(g)=S
    • R(b);N_GUARD,SBLOCK::QAB(B)
    • S(a);N_GUARD::S(F),XP(e)
  • Actual
    • S(F);XP(d)
    • Threat
      • P=Q
    • Vars
      • Q(c);N_GUARD,P_PINP(E),P_SPINQ(c),XS(F)::PXB(g)=S
      • R(b);N_GUARD,XS(A)::PXB(h)=Q
      • B(g);OGATE,P_PINP(E),P_SPINB(g),XS(F)::P=S
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