MESON Chess Problem Database

Problem Display
PID: 95069 (8/5P1N/4P1P1/1P3kP1/6N1/4K3/7Q/8 w - - 0 1)

Voinov, Vsevolod A

Cherkasskaya Pravda, 1981

8/5P1N/4P1P1/1P3kP1/6N1/4K3/7Q/8

#2

9 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Shf6?
      • 1...Kxg5
        • 2.Qh5#
      • 1...Kxe6
        • 2.Qe5#
      • 1...Kxg6!
    • 1.f8R+?
      • 1...Kxg4
        • 2.Rf4#
      • 1...Kxg6
        • 2.Qh6#
      • 1...Kxe6!
  • Keys
    • 1.f8Q+!
      • 1...Kxg4
        • 2.Qf3#
        • 2.Qff4#
      • 1...Kxe6
        • 2.Qhd6#
        • 2.Qf7#
      • 1...Kxg6
        • 2.Se5#
        • 2.Qhh6#
        • 2.Qf6#
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(I);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(E)::QAR1(A)
        • K(a);S_FLIGHT,XP(F)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • P(H);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(C)::R1(H)
        • K(a);S_FLIGHT,XP(G)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
  • Actual
    • P(H);CHECK
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