MESON Chess Problem Database

Problem Display
PID: 46276 (k7/1R1r4/KBNb4/8/8/8/8/8 w - - 0 1)

Nylund, Carl E

Lahti, 1944

k7/1R1r4/KBNb4/8/8/8/8/8

#2

4 + 3

4883 Still More Fun with Chess Miniatures 2002
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc7
      • 2.Rb8#
    • 1...Rd8
      • 2.Ra7#
    • 1...Ba3
      • 2.Rb8#
    • 1...Bb4
      • 2.Rb8#
    • 1...Bc5
      • 2.Rb8#
    • 1...Bc7
      • 2.Ra7#
    • 1...Be7
      • 2.Rb8#
    • 1...Bb8
      • 2.Rxb8#
    • 1...Bf8
      • 2.Rb8#
  • Keys
    • 1.Bc7!
      • threat
        • 2.Ra7#
        • 2.Rb8#
      • 1...Rxc7
        • 2.Rb8#
      • 1...Bxc7
        • 2.Ra7#
      • 1...Rd8
        • 2.Ra7#
      • 1...Bc5
        • 2.Rb8#

This anticipates 77495(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(b);S_CUTB(a)::R1(D)
    • R(b);N_GUARD::R1(D)
    • B(a);N_GUARD::R1(D)
    • B(a);S_CUTR(b)::R1(D)
    • B(a);N_GUARD::R1(D),XB(a)
  • Actual
    • B(B);
    • Threat
      • DUALS(2)
    • Vars
      • R(b);XB(B)::R1(D)
      • B(a);XB(B)::R1(D)
      • R(b);::R1(D)
      • B(a);::R1(D)
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