MESON Chess Problem Database

Problem Display
PID: 64091 (3k2N1/1K6/1P2pP2/1B1nP3/8/8/8/3RB3 w - - 0 1)

van Engelen, Adrianus Cornelis

Source?, 0000

3k2N1/1K6/1P2pP2/1B1nP3/8/8/8/3RB3

#2

8 + 3

5227 Schaak..., maar raak! 1969
5454 Near Snap 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Ra1?
      • threat
        • 2.Ra8#
      • 1...Sc7
        • 2.bxc7#
      • 1...Se7
        • 2.fxe7#
      • 1...Sxb6!
  • Keys
    • 1.Bd2!
      • 1...Sxb6
        • 2.Ba5#
      • 1...Sxf6
        • 2.Bg5#
      • 1...Sc3
        • 2.Bxc3#
      • 1...Se3
        • 2.Bxe3#
      • 1...Sb4
        • 2.Bxb4#
      • 1...Sf4
        • 2.Bxf4#
      • 1...Sc7
        • 2.bxc7#
      • 1...Se7
        • 2.fxe7#

This anticipates 139040(1937)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);N_PINS(a)
      • Threat
        • R(A)
      • Vars
        • S(a);OGATE::P(E),XS(a)
        • S(a);OGATE::P(F),XS(a)
      • Refutation
        • S(a);XP(E)
  • Actual
    • B(B);N_PINS(a)
    • Vars
      • S(a);OGATEB,XP(E)::R(A)+B(B)
      • S(a);OGATEB,XP(F)::R(A)+B(B)
      • S(a);OGATEB::R(A)+B(B),XS(a)
      • S(a);OGATE::P(E),XS(a)
      • S(a);OGATE::P(F),XS(a)
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