MESON Chess Problem Database

Problem Display
PID: 98855 (5Q2/3pR3/p4Pq1/BnkPNnp1/bRN5/5B2/1K6/8 w - - 0 1)

Stoyanov, Kiril N

Problemas, 1975

5Q2/3pR3/p4Pq1/BnkPNnp1/bRN5/5B2/1K6/8

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Bb6#
    • 1...Sbd4
      • 2.Sd3#
    • 1...Sfd4
      • 2.Sxd7#
  • Tries
    • 1.Qb8?
      • threat
        • 2.Qb6#
      • 1...Kd4
        • 2.Bb6#
        • 2.Qb6#
      • 1...Qxf6!
    • 1.Qc8+?
      • 1...Kd4
        • 2.Bb6#
      • 1...Sc7!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sb7#
      • 1...Kxd6
        • 2.Re6#
      • 1...Sbxd6
        • 2.Sd3#
      • 1...Sfxd6
        • 2.Sxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(c);S_FLIGHT::B(E)
    • S(b);SBLOCK::S(G)
    • S(d);SBLOCK::S(G),XP(h)
  • Tries
    • Try
      • Q(J);
      • Threat
        • QAB1(J)
      • Refutation
        • Q(g);P_PINS(G),XP(H)
    • Try
      • Q(J);CHECK
      • Vars
        • K(c);S_FLIGHT::B(E)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(D)::QAB(J)+R(I),DCHECK
      • S(b);SBLOCK,XS(D)::S(G)
      • S(d);SBLOCK,XS(D)::S(G),XP(h)
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