MESON Chess Problem Database

Problem Display
PID: 176199 (r3k3/1RR3K1/7p/8/8/8/8/8 w - - 0 1)

Keym, Werner

Schach-Echo, 1975

r3k3/1RR3K1/7p/8/8/8/8/8

#2

3 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rb8#
      • 2.Rc8#
    • 1...Ra2
      • 2.Rb8#
      • 2.Rc8#
    • 1...Ra3
      • 2.Rb8#
      • 2.Rc8#
    • 1...Ra4
      • 2.Rb8#
      • 2.Rc8#
    • 1...Ra5
      • 2.Rb8#
      • 2.Rc8#
    • 1...Ra6
      • 2.Rb8#
      • 2.Rc8#
    • 1...Ra7
      • 2.Rb8#
      • 2.Rc8#
    • 1...Rb8
      • 2.Rxb8#
    • 1...Rc8
      • 2.Rxc8#
    • 1...Rd8
      • 2.Re7#
  • Keys
    • 1.Rf7!
      • threat
        • 2.Rf8#
      • 1...Kd8
        • 2.Rf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::R(A),XR(b)
    • R(b);N_GUARD::R(B),XR(b)
    • R(b);SBLOCK::R1(B)
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • K(c);P-FLIGHT::R(B)
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