MESON Chess Problem Database

Problem Display
PID: 178237 (1N2B3/5K2/1Ppk4/1Pp1p3/2PPP3/p2p2p1/1n1N1n2/Q5B1 w - - 0 1)

Onkoud, Abdelaziz

1st HM., Vratnica-64, 2007

1N2B3/5K2/1Ppk4/1Pp1p3/2PPP3/p2p2p1/1n1N1n2/Q5B1

#2

11 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sbd1
      • 2.dxe5#
    • 1...Sa4
      • 2.dxe5#
    • 1...Sxc4
      • 2.Sxc4#
    • 1...Sfd1
      • 2.dxc5#
    • 1...Sh1
      • 2.dxc5#
    • 1...Sh3
      • 2.dxc5#
    • 1...Sxe4
      • 2.Sxe4#
    • 1...Sg4
      • 2.dxc5#
  • Tries
    • 1.Sa6?
      • threat
        • 2.dxc5#
      • 1...Sxe4
        • 2.Sxe4#
      • 1...cxd4
        • 2.c5#
      • 1...Sa4
        • 2.dxe5#
      • 1...exd4!
    • 1.Sd7?
      • threat
        • 2.dxc5#
        • 2.dxe5#
      • 1...Sxc4
        • 2.Sxc4#
        • 2.dxc5#
      • 1...Sxe4
        • 2.Sxe4#
        • 2.dxe5#
      • 1...cxd4
        • 2.c5#
      • 1...exd4
        • 2.e5#
      • 1...Sa4
        • 2.dxe5#
      • 1...Sg4
        • 2.dxc5#
      • 1...cxb5!
  • Keys
    • 1.Sxc6!
      • threat
        • 2.dxe5#
      • 1...Sxc4
        • 2.Sxc4#
      • 1...cxd4
        • 2.Qxa3#
      • 1...exd4
        • 2.e5#
      • 1...Sg4
        • 2.dxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • S(a);::P(E),XP(g)
    • S(a);XP(D)::S(C),XS(a)
    • S(b);::P(E),XP(f)
    • S(b);XP(F)::S(C),XS(b)
  • Tries
    • Try
      • S(J);
      • Threat
        • P(E),XP(f)
      • Vars
        • S(b);XP(F)::S(C),XS(b)
        • P(f);OGATE,XP(E)::P(D)
        • S(a);::P(E),XP(g)
      • Refutation
        • P(g);XP(E)
    • Try
      • S(J);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);OGATE,XP(E)::P(D)
        • P(g);OGATE,XP(E)::P(F)
        • S(a);::P(E),XP(g)
        • S(b);::P(E),XP(f)
      • Refutation
        • P(h);XP(G)
  • Actual
    • S(J);XP(h)
    • Threat
      • P(E),XP(g)
    • Vars
      • S(a);XP(D)::S(C),XS(a)
      • P(f);OGATEB,XP(E)::QAB(A),XP(c)
      • P(g);OGATE,XP(E)::P(F)
      • S(b);::P(E),XP(f)
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