MESON Chess Problem Database

Problem Display
PID: 140100 (2N4R/2P2k1p/2p4K/2PnP3/5N2/5R2/B7/8 w - - 0 1)

Bailey, JL

Good Companions, 1916

2N4R/2P2k1p/2p4K/2PnP3/5N2/5R2/B7/8

#2

9 + 4

56 The Problemist 1938
5454 Near Snap 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Se6+?
      • 1...Sf4
        • 2.Sd4#
        • 2.Sxf4#
        • 2.Sg5#
        • 2.Sg7#
        • 2.Sd8#
        • 2.Rxf4#
        • 2.Rf8#
      • 1...Sf6
        • 2.Sd4#
        • 2.Sg5#
        • 2.Sg7#
        • 2.Sd8#
        • 2.Rxf6#
        • 2.Rf8#
      • 1...Kxe6!
  • Keys
    • 1.Rb3!
      • 1...Sxf4
        • 2.Rf3#
      • 1...Sxc7
        • 2.Rb7#
      • 1...Sc3
        • 2.Rxc3#
      • 1...Se3
        • 2.Rxe3#
      • 1...Sb4
        • 2.Rxb4#
      • 1...Sb6
        • 2.Rxb6#
      • 1...Sf6
        • 2.e6#
      • 1...Se7
        • 2.Sd6#

This anticipates 58111(1928), 139043(1937), 140101(1938), 157162(1946), 145956(1951), 227985(1970)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK,N_PINS(a)
      • Refutation
        • K(c);P_SPINS(a),S_FLIGHT,XS(C)
  • Actual
    • R(B);N_PINS(a)
    • Vars
      • S(a);OGATEB,XS(C)::B(A)+R(B)
      • S(a);OGATEB,XP(G)::B(A)+R(B)
      • S(a);OGATEB::B(A)+R(B),XS(a)
      • S(a);SBLOCK::P(E)
      • S(a);SBLOCK::S(H)
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