MESON Chess Problem Database

Problem Display
PID: 7291 (3K4/B6b/4Pp1N/1P1pkP2/r4N2/2nP4/1Q6/3n1R2 w - - 0 1)

Kovacevic, Marjan

6th HM., Netanya (Internet), 1999

3K4/B6b/4Pp1N/1P1pkP2/r4N2/2nP4/1Q6/3n1R2

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Sf7#
    • 1...Rd4
      • 2.Bb8#
    • 1...Bxf5
      • 2.Sf7#
    • 1...d4
      • 2.Bb8#
  • Tries
    • 1.Sg6+?
      • 1...Kd6
        • 2.Sf7#
      • 1...Bxg6!
    • 1.Qxc3+?
      • 1...Kd6
        • 2.Sf7#
        • 2.Bc5#
        • 2.Bb8#
        • 2.Qc7#
      • 1...Rd4
        • 2.Bb8#
        • 2.Qc7#
      • 1...d4
        • 2.Bb8#
        • 2.Qc5#
        • 2.Qc7#
      • 1...Sxc3!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Sg6#
      • 1...Kd6
        • 2.Sf7#
      • 1...Rxf4
        • 2.Qxf4#
      • 1...Rxa7
        • 2.Se2#
      • 1...Bxf5
        • 2.Sf7#
      • 1...Bg6
        • 2.Sxg6#
      • 1...d4
        • 2.Bb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(e);N_SPINS(b),S_FLIGHT::S(H)
    • R(c);N_SPINS(b),SBLOCK::B(I)
    • B(g);SBLOCK,XP(F)::S(H)
    • P(d);N_SPINS(b),SBLOCK::B(I)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);N_SPINS(b),S_FLIGHT::S(H)
      • Refutation
        • B(g);XS(D)
    • Try
      • Q(B);CHECK,XS(b)
      • Refutation
        • S(a);XQ(B)
  • Actual
    • Q(B);N_PINS(b)
    • Threat
      • QAB(B)+S(D),DCHECK
    • Vars
      • K(e);S_FLIGHT::S(H)
      • R(c);OGATE,P_SPINR(c),XS(D)::QAB1(B),XR(c)
      • R(c);N_GUARD,XB(I)::QAB(B)+S(D)
      • B(g);SBLOCK,XP(F)::S(H)
      • B(g);::QAB(B)+S(D),DCHECK,XB(g)
      • P(d);SBLOCK::B(I)
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