MESON Chess Problem Database

Problem Display
PID: 11735 (8/8/8/7B/4K3/1R6/2p1R3/3k4 w - - 0 1)

Bogdanov, Evgeny Mikhailovich

Sp. HM., Molot, 1971

8/8/8/7B/4K3/1R6/2p1R3/3k4

#2

4 + 2

3296 Shakhmatny zadachi miniaturi 1987

SOLUTION

  • SOUND
  • Sets
    • 1...c1R
      • 2.Rd3#
  • Tries
    • 1.Kd3?
      • 1...Kc1
        • 2.Re1#
        • 2.Rxc2#
      • 1...c1Q
        • 2.Re3#
        • 2.Re4#
        • 2.Re5#
        • 2.Re6#
        • 2.Re7#
        • 2.Re8#
      • 1...c1B
        • 2.Re3#
        • 2.Re4#
        • 2.Re5#
        • 2.Re6#
        • 2.Re7#
        • 2.Re8#
      • 1...c1R
        • 2.Re3#
        • 2.Re4#
        • 2.Re5#
        • 2.Re6#
        • 2.Re7#
        • 2.Re8#
      • 1...c1S+!
    • 1.Rxc2+?
      • 1...Ke1
        • 2.Rb1#
      • 1...Kxc2!
  • Keys
    • 1.Rb2!
      • 1...Kc1
        • 2.Rexc2#
      • 1...c1Q
        • 2.Re3#
      • 1...c1S
        • 2.Rbd2#
      • 1...c1B
        • 2.Re3#
      • 1...c1R
        • 2.Rbd2#
        • 2.Re3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(b);SBLOCK::R(B)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Refutation
        • P(b);CHECK
    • Try
      • R(A);CHECK,XP(b)
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
  • Actual
    • R(B);
    • Vars
      • K(a);P-FLIGHT::R1(A),XP(b)
      • P(b);SBLOCK::B(D)+R(A)
      • P(b);OGATE,SBLOCK::R1(B)
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