MESON Chess Problem Database

Problem Display
PID: 173097 (brk4K/Rr4N1/QnP5/b2NP3/2R4B/8/8/8 w - - 0 1)

Barulin, Mikhail Mikhailovich

9th HM., 64 Shakhmatnoe obozrenie, 1925-1926

brk4K/Rr4N1/QnP5/b2NP3/2R4B/8/8/8

#2

9 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sd7
      • 2.cxb7#
  • Tries
    • 1.Se6?
      • threat
        • 2.Se7#
      • 1...Bb4
        • 2.Sxb6#
      • 1...Sxd5!
  • Keys
    • 1.c7!
      • 1...Kd7+
        • 2.cxb8S#
      • 1...Sxc4
        • 2.Qe6#
      • 1...Sxd5
        • 2.Qe6#
      • 1...Be1
        • 2.Sxb6#
      • 1...Bd2
        • 2.Sxb6#
      • 1...Bc3
        • 2.Sxb6#
      • 1...Bb4
        • 2.Sxb6#
      • 1...Sa4
        • 2.Qe6#
      • 1...Sd7
        • 2.Se7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::R(A)+P(F)DCHECK,XR(c)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(C)
      • Vars
        • B(a);N_GUARD::S(C),XS(b)
      • Refutation
        • S(b);XS(C)
  • Actual
    • P(F);
    • Vars
      • K(f);CHECK,N_SPINR(c),S_FLIGHT::PXR(e)=S
      • S(b);OGATE,XR(A)::QAB(E)
      • S(b);OGATE,XS(C)::QAB(E)
      • B(a);N_GUARD::S(C),XS(b)
      • S(b);OGATE::QAB(E)
      • S(b);SBLOCK::S(C)
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