MESON Chess Problem Database

Problem Display
PID: 234875 (N1R4r/KBpk3b/3p4/5p2/3N3B/8/8/8 w - - 0 1)

Gruber, Lutz-Dieter

Freie Presse, 1988

N1R4r/KBpk3b/3p4/5p2/3N3B/8/8/8

#2

6 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc8
      • 2.Bc6#
    • 1...Rd8
      • 2.Rxd8#
    • 1...Re8
      • 2.Rxc7#
    • 1...Bg8
      • 2.Rd8#
    • 1...c5
      • 2.Sb6#
    • 1...c6
      • 2.Sb6#
  • Tries
    • 1.Rxh8?
      • threat
        • 2.Bc6#
        • 2.Bc8#
        • 2.Rd8#
      • 1...d5
        • 2.Rd8#
      • 1...c6
        • 2.Bxc6#
        • 2.Bc8#
        • 2.Rd8#
      • 1...Bg8!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Be6#
      • 1...Kxc8
        • 2.Be6#
      • 1...Rxc8
        • 2.Bc6#
      • 1...Rd8
        • 2.Rxd8#
      • 1...Re8
        • 2.Rxc7#
      • 1...Bg8
        • 2.Rd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(f);SBLOCK,XR(F)::B(D)
    • R(f);N_GUARD::R1(F),XR(f)
    • R(f);SBLOCK::R1(F),XP(c)
    • B(e);S_CUTR(f)::R1(F)
    • P(c);N_GUARD::S(E)
  • Tries
    • Try
      • R(F);XR(f)
      • Threat
        • DUALS(3)
      • Vars
        • P(b);::R1(F)
      • Refutation
        • B(e);
  • Actual
    • B(D);
    • Threat
      • B(D)
    • Vars
      • K(d);S_FLIGHT,XR(F)::B(D)
      • R(f);SBLOCK,XR(F)::B(D)
      • R(f);N_GUARD::R1(F),XR(f)
      • R(f);SBLOCK::R1(F),XP(c)
      • B(e);S_CUTR(f)::R1(F)
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