MESON Chess Problem Database

Problem Display
PID: 180512 (1b6/2p2R2/1p2P3/1Nk2P2/1pBN4/1KpPPP2/PPR5/6B1 w - - 0 1)

Lider, Valentin Viktorovich

1st HM., Europe Echecs, 1973

1b6/2p2R2/1p2P3/1Nk2P2/1pBN4/1KpPPP2/PPR5/6B1

#2

14 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ba7
      • 2.Rxc7#
  • Tries
    • 1.Ka4?
      • 1...cxb2
        • 2.Bb3#
      • 1...Ba7
        • 2.Rxc7#
      • 1...c6
        • 2.Sb3#
      • 1...b3!
    • 1.e7?
      • 1...cxb2
        • 2.Be6#
      • 1...c6
        • 2.Se6#
      • 1...Ba7!
  • Keys
    • 1.e4!
      • 1...cxb2
        • 2.Bd5#
      • 1...c6
        • 2.Se2#
      • 1...Ba7
        • 2.Rxc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD::R(N),XP(e)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • P(a);OGATEB,XP(C)::R(D)+B(I)
        • B(f);N_GUARD::R(N),XP(e)
        • P(e);SBLOCK::S(J)
      • Refutation
        • P(b);
    • Try
      • P(M);
      • Vars
        • P(a);OGATEB,XP(C)::R(D)+B(I)
        • P(e);SBLOCK::S(J)
      • Refutation
        • B(f);
  • Actual
    • P(G);
    • Vars
      • P(a);OGATEB,XP(C)::R(D)+B(I)
      • P(e);SBLOCK::B(A)+S(J)
      • B(f);N_GUARD::R(N),XP(e)
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