MESON Chess Problem Database

Problem Display
PID: 244511 (3B4/8/8/3K4/B2R4/2N5/1k2P3/8 w - - 0 1)

Fomichev, Evgeny Vasilevich

ChessStar, 2013

3B4/8/8/3K4/B2R4/2N5/1k2P3/8

#2

6 + 1

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rb4+?
      • 1...Ka1
        • 2.Rb1#
      • 1...Kc1
        • 2.Bg5#
      • 1...Ka3
        • 2.Rb3#
      • 1...Kxc3!
  • Keys
    • 1.Rd2+!
      • 1...Ka1
        • 2.Ra2#
      • 1...Kc1
        • 2.Rc2#
      • 1...Ka3
        • 2.Be7#
      • 1...Kxc3
        • 2.Ba5#

Anticipated by 91454(1984), 46444(2002)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::R1(D)
        • K(a);S_FLIGHT::B(F)
        • K(a);S_FLIGHT::R1(D)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
  • Actual
    • R(D);CHECK
    • Vars
      • K(a);OGATE,S_FLIGHT::R1(D)
      • K(a);S_FLIGHT::R1(D)
      • K(a);S_FLIGHT::B(F)
      • K(a);S_FLIGHT,XS(B)::B(F)
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