MESON Chess Problem Database

Problem Display
PID: 231065 (8/8/8/p7/3B2B1/1k2K3/2N5/2R5 w - - 0 1)

Evdokimov, Aleksey

Kudesnik, 2006

8/8/8/p7/3B2B1/1k2K3/2N5/2R5

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka2
      • 2.Be6#
    • 1...a4
      • 2.Be6#
  • Tries
    • 1.Kd3?
      • 1...Ka2
        • 2.Be6#
      • 1...a4
        • 2.Be6#
      • 1...Ka4!
    • 1.Bd7?
      • 1...Ka2
        • 2.Be6#
      • 1...a4
        • 2.Be6#
      • 1...Kc4!
  • Keys
    • 1.Rb1+!
      • 1...Ka2
        • 2.Rb2#
      • 1...Kxc2
        • 2.Bf5#
      • 1...Ka4
        • 2.Bd7#
      • 1...Kc4
        • 2.Be6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::B(E)
    • P(b);SBLOCK::B(E)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(E)
        • P(b);SBLOCK::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::B(E)
        • P(b);SBLOCK::B(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(A);CHECK
    • Vars
      • K(a);S_FLIGHT::R1(A)
      • K(a);S_FLIGHT,XS(B)::B(E)
      • K(a);S_FLIGHT::B(E)
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