MESON Chess Problem Database

Problem Display
PID: 82085 (1r3R2/r7/3N1BRp/4pB2/5k2/7P/3P2P1/2nb3K w - - 0 1)

Ahues, Herbert Siegfried Oskar

Themes-64, 1961

1r3R2/r7/3N1BRp/4pB2/5k2/7P/3P2P1/2nb3K

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc2
      • 2.Rg4#
    • 1...Bb3
      • 2.Rg4#
    • 1...Ba4
      • 2.Rg4#
    • 1...Bg4
      • 2.Rxg4#
    • 1...Se2
      • 2.Rg4#
  • Tries
    • 1.Be4?
      • threat
        • 2.g3#
      • 1...Bg4
        • 2.Rxg4#
      • 1...Ra3
        • 2.Bd8#
      • 1...Rb3
        • 2.Be7#
      • 1...Se2
        • 2.Rg4#
      • 1...Bf3!
    • 1.Bg5+?
      • 1...Kg3
        • 2.Se4#
      • 1...hxg5!
  • Keys
    • 1.Bh4!
      • threat
        • 2.Bg3#
      • 1...Ra3
        • 2.Bc8#
      • 1...Rb3
        • 2.Bd7#
      • 1...Bg4
        • 2.Rxg4#
      • 1...Se2
        • 2.Rg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(b);N_GUARD::R1(H)
    • B(b);N_GUARD::R1(H),XB(b)
    • S(a);S_CUTB(b)::R1(H)
  • Tries
    • Try
      • B(E);
      • Threat
        • P(C)
      • Vars
        • B(b);N_GUARD::R1(H),XB(b)
        • R(f);N_GUARD::R(I)+B(G)
        • R(g);N_GUARD::R(I)+B(G)
        • S(a);S_CUTB(b)::R1(H)
      • Refutation
        • B(b);P_PINP(C)
    • Try
      • B(G);CHECK
      • Vars
        • K(c);S_FLIGHT::S(F)
      • Refutation
        • P(e);XB(G)
  • Actual
    • B(G);
    • Threat
      • B(G)
    • Vars
      • R(f);N_GUARD::R(I)+B(E)
      • R(g);N_GUARD::R(I)+B(E)
      • B(b);N_GUARD::R1(H),XB(b)
      • S(a);S_CUTB(b)::R1(H)
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