MESON Chess Problem Database

Problem Display
PID: 83684 (b7/p4K2/rb2P3/3k4/PP5R/3Bp3/6pB/2R5 w - - 0 1)

Ellerman, Arnoldo

Die Schwalbe, 1964

b7/p4K2/rb2P3/3k4/PP5R/3Bp3/6pB/2R5

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Be4#
    • 1...Ba5
      • 2.Rc5#
    • 1...Bc5
      • 2.Rxc5#
    • 1...Bc7
      • 2.Rc5#
    • 1...Bd8
      • 2.Rc5#
    • 1...Bc6
      • 2.Bc4#
  • Tries
    • 1.Bb1?
      • threat
        • 2.Ba2#
      • 1...Bc5
        • 2.Rxc5#
      • 1...Rxa4!
    • 1.Bc2?
      • threat
        • 2.Bb3#
      • 1...Kc6
        • 2.Be4#
      • 1...Bc5!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Rd6#
      • 1...Kxc6
        • 2.Be4#
      • 1...Bxc6
        • 2.Bc4#
      • 1...Bd4
        • 2.Be4#
      • 1...Ba5
        • 2.Rc5#
      • 1...Bc5
        • 2.Rxc5#
      • 1...Bc7
        • 2.Rc5#
      • 1...Bd8
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK::B(C)
    • B(e);N_GUARD::R1(A)
    • B(e);N_GUARD::R1(A),XB(e)
    • B(g);SBLOCK::B(C)
  • Tries
    • Try
      • B(C);
      • Threat
        • B(C)
      • Vars
        • B(e);N_GUARD::R1(A),XB(e)
      • Refutation
        • R(d);XP(D)
    • Try
      • B(C);
      • Threat
        • B(C)
      • Vars
        • K(c);S_FLIGHT::R(A)+B(C),DCHECK
      • Refutation
        • B(e);
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • K(c);S_FLIGHT,XR(A)::B(C)
      • B(g);SBLOCK,XR(A)::B(C)
      • B(e);SBLOCK::B(C)
      • B(e);N_GUARD::R1(A)
      • B(e);N_GUARD::R1(A),XB(e)
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