MESON Chess Problem Database

Problem Display
PID: 22153 (1R6/8/p7/kNNb4/8/8/8/KR6 w - - 0 1)

Macleod, Norman Alasdair

5th HM., BCPS Ring Ty., 1962

1R6/8/p7/kNNb4/8/8/8/KR6

#2

5 + 3

3174 The Two-move Chess Problem Tradition and Development 1966
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...axb5
      • 2.R1xb5#
      • 2.R8xb5#
  • Tries
    • 1.Sd4?
      • 1...Bh1
        • 2.Sdb3#
      • 1...Ba2
        • 2.Sc6#
      • 1...Bg2
        • 2.Sdb3#
      • 1...Bb3
        • 2.Sdxb3#
        • 2.Sc6#
      • 1...Bf3
        • 2.Sdb3#
      • 1...Bc4
        • 2.Sc6#
      • 1...Be4
        • 2.Sdb3#
      • 1...Bc6
        • 2.Sdb3#
        • 2.Sxc6#
      • 1...Be6
        • 2.Sc6#
      • 1...Bf7
        • 2.Sc6#
      • 1...Ba8
        • 2.Sdb3#
      • 1...Bg8
        • 2.Sc6#
      • 1...Bb7!
    • 1.Sd6?
      • 1...Bh1
        • 2.Sc4#
      • 1...Ba2
        • 2.Sdb7#
      • 1...Bg2
        • 2.Sc4#
      • 1...Bf3
        • 2.Sc4#
      • 1...Bc4
        • 2.Sxc4#
        • 2.Sdb7#
      • 1...Be4
        • 2.Sc4#
      • 1...Bc6
        • 2.Sc4#
      • 1...Be6
        • 2.Sdb7#
      • 1...Bb7
        • 2.Sc4#
        • 2.Sdxb7#
      • 1...Bf7
        • 2.Sdb7#
      • 1...Ba8
        • 2.Sc4#
      • 1...Bg8
        • 2.Sdb7#
      • 1...Bb3!
  • Keys
    • 1.Sc3!
      • 1...Bh1
        • 2.Sb3#
      • 1...Ba2
        • 2.Sb7#
      • 1...Bg2
        • 2.Sb3#
      • 1...Bb3
        • 2.Sxb3#
      • 1...Bf3
        • 2.Sb3#
      • 1...Bc4
        • 2.Sb7#
      • 1...Be4
        • 2.Sb3#
      • 1...Bc6
        • 2.Sb3#
      • 1...Be6
        • 2.Sb7#
      • 1...Bb7
        • 2.Sxb7#
      • 1...Bf7
        • 2.Sb7#
      • 1...Ba8
        • 2.Sb3#
      • 1...Bg8
        • 2.Sb7#

Anticipated by 16970(1944), 24935(1947)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • B(b);N_GUARD::S(C)
      • Refutation
        • B(b);
    • Try
      • S(C);
      • Vars
        • B(b);N_GUARD::S(C)
      • Refutation
        • B(b);
  • Actual
    • S(C);
    • Vars
      • B(b);N_GUARD::S(D)
      • B(b);N_GUARD::S(D),XB(b)
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