MESON Chess Problem Database

Problem Display
PID: 136519 (8/1pp1N3/8/2p2p2/2pkpQ2/2n1p3/2K5/8 w - - 0 1)

Djulinac, Stevan

Liga Problemista, 1989/2

8/1pp1N3/8/2p2p2/2pkpQ2/2n1p3/2K5/8

#2

3 + 9

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Sxf5#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Qe5#
      • 1...e2
        • 2.Qd2#
      • 1...Kd5!
    • 1.Qh2?
      • threat
        • 2.Qh8#
      • 1...Sd5
        • 2.Sxf5#
      • 1...e2!
    • 1.Qd6+?
      • 1...Sd5
        • 2.Sxf5#
        • 2.Qxd5#
      • 1...cxd6!
    • 1.Qxf5?
      • threat
        • 2.Qf6#
      • 1...Sd5
        • 2.Qxd5#
      • 1...e2!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qg7#
      • 1...Sd5
        • 2.Sxf5#
      • 1...e2
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::S(C),XP(g)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(B)
      • Vars
        • P(b);OGATE::QAR2(B)
      • Refutation
        • K(d);N_SPINP(e),P-FLIGHT
    • Try
      • Q(B);N_PINP(e)
      • Threat
        • QAB(B)
      • Vars
        • S(a);SBLOCK::S(C),XP(g)
      • Refutation
        • P(b);
    • Try
      • Q(B);CHECK,N_PINP(e)
      • Refutation
        • P(i);XQ(B)
    • Try
      • Q(B);N_PINP(e),XP(g)
      • Threat
        • QAB(B)
      • Vars
        • S(a);N_GUARD::QAR1(B),XS(a)
      • Refutation
        • P(b);
  • Actual
    • Q(B);N_PINP(e)
    • Threat
      • QAB(B)
    • Vars
      • S(a);SBLOCK::S(C),XP(g)
      • P(b);OGATE::QAB1(B),XS(a)
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