MESON Chess Problem Database

Problem Display
PID: 118460 (q1k5/P1P1p3/KPP5/1NR5/8/8/8/8 w - - 0 1)

Saks, Oleg Pavlovich

Kudesnik, 2000

q1k5/P1P1p3/KPP5/1NR5/8/8/8/8

#2

7 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa7+
      • 2.Sxa7#
    • 1...Qb8
      • 2.axb8Q#
      • 2.axb8R#
      • 2.cxb8Q#
      • 2.cxb8R#
    • 1...e5
      • 2.Sd6#
    • 1...e6
      • 2.Sd6#
  • Keys
    • 1.Rd5!
      • threat
        • 2.Rd8#
      • 1...Qb7+
        • 2.cxb7#
      • 1...Qxa7+
        • 2.Sxa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(b);CHECK,XP(F)::S(A),XQ(b)
    • P(a);N_GUARD::S(A)
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • Q(b);CHECK,N_PINP(F),OGATE::P(E),XQ(b)
      • Q(b);CHECK,XP(F)::S(A),XQ(b)
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