MESON Chess Problem Database

Problem Display
PID: 753 (7k/5R1P/5PKb/8/8/8/8/8 w - - 0 1)

Buchwald, Julius

British Chess Magazine, 1949

7k/5R1P/5PKb/8/8/8/8/8

#2

4 + 2

2838 Fun with Chess Miniatures 1996
3713 Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Rf8#
    • 1...Bd2
      • 2.Rf8#
    • 1...Be3
      • 2.Rf8#
    • 1...Bf4
      • 2.Rf8#
    • 1...Bg5
      • 2.Rf8#
    • 1...Bg7
      • 2.fxg7#
    • 1...Bf8
      • 2.Rxf8#
  • Tries
    • 1.Rc7?
      • 1...Bc1
        • 2.Rc8#
      • 1...Bd2
        • 2.Rc8#
      • 1...Be3
        • 2.Rc8#
      • 1...Bf4
        • 2.Rc8#
      • 1...Bg5
        • 2.Rc8#
      • 1...Bg7
        • 2.fxg7#
      • 1...Bf8!
    • 1.Rd7?
      • 1...Bc1
        • 2.Rd8#
      • 1...Bd2
        • 2.Rd8#
      • 1...Be3
        • 2.Rd8#
      • 1...Bf4
        • 2.Rd8#
      • 1...Bg5
        • 2.Rd8#
      • 1...Bg7
        • 2.fxg7#
      • 1...Bf8!
    • 1.Re7?
      • 1...Bc1
        • 2.Re8#
      • 1...Bd2
        • 2.Re8#
      • 1...Be3
        • 2.Re8#
      • 1...Bf4
        • 2.Re8#
      • 1...Bg5
        • 2.Re8#
      • 1...Bg7
        • 2.fxg7#
      • 1...Bf8!
  • Keys
    • 1.Rg7!
      • threat
        • 2.Rg8#
      • 1...Bxg7
        • 2.fxg7#

Anticipated by 166850(1926)

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • B(a);N_GUARD::R(C)
    • B(a);OGATE::P(A),XB(a)
    • B(a);N_GUARD::R(C),XB(a)
  • Tries
    • Try
      • R(C);
      • Vars
        • B(a);N_GUARD::R(C)
        • B(a);OGATE::P(A),XB(a)
      • Refutation
        • B(a);
    • Try
      • R(C);
      • Vars
        • B(a);N_GUARD::R(C)
        • B(a);OGATE::P(A),XB(a)
      • Refutation
        • B(a);
    • Try
      • R(C);
      • Vars
        • B(a);N_GUARD::R(C)
        • B(a);OGATE::P(A),XB(a)
      • Refutation
        • B(a);
  • Actual
    • R(C);
    • Threat
      • R1(C)
    • Vars
      • B(a);OGATE,XR(C)::P(A),XB(a)
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