MESON Chess Problem Database

Problem Display
PID: 213813 (2k5/3r2N1/1Q6/8/4K2B/7B/8/8 w - - 0 1)

Novis Filho, Mario

Suomen Shakki, 1959

2k5/3r2N1/1Q6/8/4K2B/7B/8/8

#2

5 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sd6#
        • 2.Se7#
      • 1...Rd4+
        • 2.Sxd4#
      • 1...Re7+
        • 2.Sxe7#
      • 1...Rd6
        • 2.Sxd6#
        • 2.Se7#
      • 1...Rb7
        • 2.Qd8#
      • 1...Rc7
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Actual
    • S(E);N_PINR(a)
    • Threat
      • DUALS(2)
    • Vars
      • R(a);CHECK::B(A)+S(E),XR(a)
      • R(a);CHECK::B(A)+S(E),DCHECK,XR(a)
      • R(a);N_GUARD,SBLOCK::QAR1(D)
      • R(a);::B(A)+S(E),DCHECK
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