MESON Chess Problem Database

Problem Display
PID: 119151 (5K2/8/4P3/3QNk2/4N3/7b/7B/8 w - - 0 1)

Yakovlev, Yuri Nikolayevich

Canadian Chess Chat, 1980

5K2/8/4P3/3QNk2/4N3/7b/7B/8

#2

6 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3+?
      • 1...Kg4
        • 2.Sf2#
        • 2.Sf6#
      • 1...Kg6!
    • 1.Sg6+?
      • 1...Kg4
        • 2.Sf2#
        • 2.Sf6#
      • 1...Kxg6!
  • Keys
    • 1.Qd1!
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kxe6
        • 2.Qd7#
      • 1...Bf1
        • 2.Qg4#
      • 1...Bg2
        • 2.Qg4#
      • 1...Bg4
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);CHECK
      • Refutation
        • K(b);S_FLIGHT,XS(D)
  • Actual
    • Q(C);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(B)::QAB1(C)
      • K(b);OGATEB,S_FLIGHT,XP(E)::QAB1(C)
      • B(a);N_GUARD::QAB1(C)
      • B(a);N_GUARD::QAB1(C),XB(a)
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