MESON Chess Problem Database

Problem Display
PID: 231593 (N1k5/KR3N2/8/3n4/8/8/8/8 w - - 0 1)

Torngren, Pehr Hendrik

Sydsvenska Dagbladet Snallposten, 1927

N1k5/KR3N2/8/3n4/8/8/8/8

#2

4 + 2

5454 Near Snap 2021
6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Sb6#
      • 2.Rc7#
    • 1...Se3
      • 2.Sb6#
      • 2.Rc7#
    • 1...Sb4
      • 2.Sb6#
      • 2.Rc7#
    • 1...Sf4
      • 2.Sb6#
      • 2.Rc7#
    • 1...Sb6
      • 2.Sxb6#
      • 2.Rc7#
    • 1...Sf6
      • 2.Sb6#
      • 2.Rc7#
    • 1...Sc7
      • 2.Sb6#
      • 2.Rxc7#
    • 1...Se7
      • 2.Sb6#
      • 2.Rc7#
  • Tries
    • 1.Re7?
      • 1...Sc3
        • 2.Sb6#
        • 2.Rc7#
      • 1...Se3
        • 2.Sb6#
        • 2.Rc7#
      • 1...Sb4
        • 2.Sb6#
        • 2.Rc7#
      • 1...Sf4
        • 2.Sb6#
        • 2.Rc7#
      • 1...Sb6
        • 2.Sxb6#
        • 2.Rc7#
      • 1...Sf6
        • 2.Sb6#
        • 2.Rc7#
      • 1...Sc7
        • 2.Sb6#
        • 2.Rxc7#
      • 1...Sxe7!
  • Keys
    • 1.Rc7+!
      • 1...Sxc7
        • 2.Sb6#

Anticipated by 29184(1300), 77321(1300)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Refutation
        • S(a);XR(B)
  • Actual
    • R(B);CHECK
    • Vars
      • S(a);SBLOCK,XR(B)::S(D)
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