MESON Chess Problem Database

Problem Display
PID: 41410 (B7/1R6/2R4K/4p3/4k1P1/4N3/b1P1rP2/b7 w - - 0 1)

Bonivento, Oscar

La Settimana Enigmistica, 1934

B7/1R6/2R4K/4p3/4k1P1/4N3/b1P1rP2/b7

#2

8 + 5

4436 Problemi Opera omnia 2001

SOLUTION

  • SOUND
  • Tries
    • 1.Rc4+?
      • 1...Kf3
        • 2.Rf7#
      • 1...Bd4
        • 2.Rf7#
      • 1...Bxc4!
    • 1.Rb4+?
      • 1...Kf3
        • 2.Rf6#
      • 1...Bc4
        • 2.Rcxc4#
      • 1...Bd4!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Rc4#
      • 1...Kf3
        • 2.Rf6#
      • 1...Kd4
        • 2.Rc4#
      • 1...Kf4
        • 2.Rf6#
      • 1...Bd4
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(d);S_FLIGHT::B(H)+R(G),DCHECK
        • B(a);P_SPINB(a)::B(H)+R(G)
      • Refutation
        • B(b);XR(E)
    • Try
      • R(G);CHECK
      • Vars
        • K(d);S_FLIGHT::B(H)+R(E),DCHECK
        • B(b);P_SPINB(b)::B(H)+R(E),DCHECK,XB(b)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • R(G);
    • Threat
      • B(H)+R(E),DCHECK
    • Vars
      • K(d);S_FLIGHT::B(H)+R(E),DCHECK
      • K(d);P-FLIGHT::R1(E)
      • K(d);P-FLIGHT::R(E)
      • B(a);SBLOCK::B(H)+R(E)
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