MESON Chess Problem Database

Problem Display
PID: 104586 (8/1p2N3/4Q3/4b3/1KpNk2n/4P2P/3P1p2/3b1q2 w - - 0 1)

Spiric, Igor

Belgrade QCT, 1998

8/1p2N3/4Q3/4b3/1KpNk2n/4P2P/3P1p2/3b1q2

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Qd5#
    • 1...Sg2
      • 2.Qf5#
      • 2.Qg6#
    • 1...Sf3
      • 2.Qf5#
      • 2.Qg6#
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sg6
      • 2.Qf5#
      • 2.Qxg6#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qd5#
      • 1...Kf3
        • 2.Qg4#
      • 1...Kd3!
    • 1.Sb3?
      • threat
        • 2.Qd5#
      • 1...Kd3
        • 2.Qxc4#
      • 1...Kf3
        • 2.Qg4#
      • 1...Qd3!
    • 1.Qg6+?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sxg6!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qd5#
      • 1...Kd3
        • 2.Qxc4#
      • 1...Kxf3
        • 2.Qg4#
      • 1...Qd3
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(b);SBLOCK::QAB1(F)
    • S(f);N_GUARD::QAB1(F),XS(f)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(F)
      • Vars
        • K(e);N_SPINB(g),S_FLIGHT::QAB1(F)
      • Refutation
        • K(e);N_SPINB(g),S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAB1(F)
      • Vars
        • K(e);N_SPINB(g),S_FLIGHT::QAB1(F),XP(d)
        • K(e);N_SPINB(g),S_FLIGHT::QAB1(F)
      • Refutation
        • Q(b);
    • Try
      • Q(F);CHECK,N_PINB(g)
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAB1(F),XS(f)
      • Refutation
        • S(f);XQ(F)
  • Actual
    • S(E);
    • Threat
      • QAB1(F)
    • Vars
      • K(e);N_SPINB(g),S_FLIGHT::QAB1(F),XP(d)
      • K(e);N_SPINB(g),S_FLIGHT,XS(E)::QAB1(F)
      • Q(b);SBLOCK::S(E)
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