MESON Chess Problem Database

Problem Display
PID: 243834 (8/8/8/8/1N3NK1/2Q5/r4P2/3k4 w - - 0 1)

Chepizhni, Viktor Ivanovich

64 Shakhmatnoe obozrenie, 2004

8/8/8/8/1N3NK1/2Q5/r4P2/3k4

#2

5 + 2

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Qa1#
  • Tries
    • 1.Sfd3?
      • threat
        • 2.Qe1#
      • 1...Ke2
        • 2.Qe1#
      • 1...Re2
        • 2.Qc1#
      • 1...Rd2!
  • Keys
    • 1.Sbd3!
      • threat
        • 2.Qc1#
      • 1...Ra1
        • 2.Sb2#
      • 1...Rc2
        • 2.Qe1#

Anticipated by 7682(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD,SBLOCK::QAR(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • R(b);SBLOCK::QAR1(B)
      • Refutation
        • R(b);
  • Actual
    • S(C);
    • Threat
      • QAR1(B)
    • Vars
      • R(b);N_GUARD::S(C)
      • R(b);SBLOCK::QAR1(B)
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