MESON Chess Problem Database

Problem Display
PID: 245026 (b7/5p2/1p6/1Q1Bn2k/5B1N/3P3K/q1p5/8 w - - 0 1)

Buglos, Janos

Scacchi e Scienze Applicate, 2000

b7/5p2/1p6/1Q1Bn2k/5B1N/3P3K/q1p5/8

#2

6 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Bxf7#
    • 1...Qa1
      • 2.Bxf7#
    • 1...Qb2
      • 2.Bxf7#
    • 1...Qa3
      • 2.Bxf7#
    • 1...Qa4
      • 2.Bxf7#
    • 1...Qa5
      • 2.Bxf7#
    • 1...Qa6
      • 2.Bxf7#
    • 1...Sxd3
      • 2.Bf3#
      • 2.Bxf7#
    • 1...Sf3
      • 2.Bxf3#
      • 2.Bxf7#
    • 1...Sc4
      • 2.Bf3#
      • 2.Bxf7#
    • 1...Sg4
      • 2.Bxf7#
    • 1...Sc6
      • 2.Bf3#
      • 2.Bxf7#
    • 1...Sg6
      • 2.Bf3#
    • 1...Sd7
      • 2.Bf3#
      • 2.Bxf7#
  • Tries
    • 1.Qd7?
      • threat
        • 2.Qf5#
      • 1...Sf3
        • 2.Qg4#
        • 2.Qxf7#
      • 1...f5
        • 2.Qxf5#
        • 2.Qh7#
      • 1...Sxd7!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qh8#
      • 1...Sg4
        • 2.Qxf7#
      • 1...Sg6
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::B(F),XP(f)
    • Q(a);N_GUARD,P_PINP(A)::B(F),XP(f)
    • S(c);::QAR(E)+B(F),DCHECK,XP(f)
    • S(c);::QAR(E)+B(F),DCHECK
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR2(E)
      • Refutation
        • S(c);XQ(E)
  • Actual
    • Q(E);P_PINP(f)
    • Threat
      • QAR(E)
    • Vars
      • S(c);N_GUARD::QAB(E),XP(f)
      • S(c);N_SPINP(f),OGATE::QAB(E)
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