MESON Chess Problem Database

Problem Display
PID: 119882 (6K1/3Q4/8/2B3kP/3P3p/3P3p/4P2P/8 w - - 0 1)

Petrnousek, Antonin

Vynalezy a pokroky, 1911

6K1/3Q4/8/2B3kP/3P3p/3P3p/4P2P/8

#2

8 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Be7#
  • Tries
    • 1.Kg7?
      • 1...Kxh5
        • 2.Qf5#
      • 1...Kf4!
    • 1.Qg4+?
      • 1...Kf6
        • 2.Qg6#
      • 1...Kh6
        • 2.Bf8#
        • 2.Qg6#
      • 1...Kxg4!
    • 1.Qf5+?
      • 1...Kh6
        • 2.Bf8#
        • 2.Qg6#
      • 1...Kxf5!
    • 1.Qf7?
      • 1...Kh6
        • 2.Qg6#
      • 1...Kg4!
  • Keys
    • 1.Bf8!
      • 1...Kf4
        • 2.Bh6#
      • 1...Kxh5
        • 2.Qf5#
      • 1...Kf6
        • 2.Be7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(E)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Vars
        • K(c);P-FLIGHT,XP(F)::QAR2(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(G)
      • Refutation
        • K(c);P-FLIGHT,XQ(G)
    • Try
      • Q(G);CHECK
      • Refutation
        • K(c);P-FLIGHT,XQ(G)
    • Try
      • Q(G);
      • Vars
        • K(c);S_FLIGHT::QAR1(G)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • B(E);
    • Vars
      • K(c);S_FLIGHT::B(E)
      • K(c);P-FLIGHT,XP(F)::QAR2(G)
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