MESON Chess Problem Database

Problem Display
PID: 180259 (4kb1R/2BnNr2/1p3P2/1Qp4B/2P3N1/8/8/4K3 w - - 0 1)

Lider, Valentin Viktorovich

7th HM., Problem (Zagreb), 1973

4kb1R/2BnNr2/1p3P2/1Qp4B/2P3N1/8/8/4K3

#2

9 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sg6?
      • 1...Re7+
        • 2.Sxe7#
      • 1...Rg7
        • 2.Rxf8#
      • 1...Rh7
        • 2.Rxf8#
      • 1...Rxf6!
    • 1.Sg8?
      • 1...Bd6
        • 2.Se7#
      • 1...Bh6
        • 2.S8xh6#
      • 1...Be7
        • 2.Sxe7#
      • 1...Bg7!
  • Keys
    • 1.Sc6!
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Se5
        • 2.Scxe5#
      • 1...Sb8
        • 2.Sxb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);N_PINR(d)
      • Vars
        • R(d);CHECK::B(E)+S(H),XR(d)
        • R(d);N_GUARD::R1(I),XB(f)
      • Refutation
        • R(d);XP(F)
    • Try
      • S(H);N_PINB(f)
      • Vars
        • B(f);::R(I)+S(H)
        • B(f);::R(I)+S(H),XB(f)
      • Refutation
        • B(f);
  • Actual
    • S(H);N_PINS(c)
    • Vars
      • S(c);XP(F)::S(C),XS(c)
      • S(c);::QAB(D)+S(H),XS(c)
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