MESON Chess Problem Database

Problem Display
PID: 207672 (3RR1b1/B1p5/1b2n1B1/1N1PkNPp/2pp4/2rp1PP1/2r3p1/3n2K1 w - - 0 1)

Onkoud, Abdelaziz

Sachova skladba, 2015

3RR1b1/B1p5/1b2n1B1/1N1PkNPp/2pp4/2rp1PP1/2r3p1/3n2K1

#2

11 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Ba5
      • 2.Bxd4#
    • 1...Bh7
      • 2.Rxe6#
  • Tries
    • 1.Se7?
      • threat
        • 2.Sc6#
      • 1...Sxd8
        • 2.f4#
      • 1...c6
        • 2.Sxc6#
      • 1...Sxg5!
    • 1.Bxb6?
      • threat
        • 2.Bxd4#
        • 2.Bxc7#
      • 1...c5
        • 2.Bc7#
      • 1...c6
        • 2.Bxd4#
        • 2.Bc7#
      • 1...cxb6!
  • Keys
    • 1.Sfxd4!
      • threat
        • 2.f4#
      • 1...Bxd4+
        • 2.Bxd4#
      • 1...Rf2
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(j);OGATE::B(I),XP(g)
    • B(m);N_GUARD::R1(K),XS(k)
  • Tries
    • Try
      • S(F);N_PINS(k)
      • Threat
        • S(F)
      • Vars
        • S(k);N_GUARD,XR(J)::P(B)
        • P(l);::S(F),XP(l)
      • Refutation
        • S(k);XP(G)
    • Try
      • B(I);XB(j)
      • Threat
        • DUALS(2)
      • Vars
        • P(l);::B(I)
      • Refutation
        • P(l);XB(I)
  • Actual
    • S(F);P_SPINS(F),XP(g)
    • Threat
      • P(B)
    • Vars
      • B(j);CHECK,OGATE,XS(F)::B(I),XB(j)
      • R(b);N_PINS(F)::S(F)
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