MESON Chess Problem Database

Problem Display
PID: 180265 (8/3p2Q1/2PPRp2/3PNpP1/1BP4R/3Pkp1N/8/5K2 w - - 0 1)

Lider, Valentin Viktorovich

Freie Presse, 1982

8/3p2Q1/2PPRp2/3PNpP1/1BP4R/3Pkp1N/8/5K2

#2

13 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...dxe6
      • 2.Qa7#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Sd1#
        • 2.Sxd7#
      • 1...fxe5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...dxc6
        • 2.Sd1#
        • 2.Sxc6#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Sf7#
      • 1...dxe6
        • 2.Sd1#
        • 2.Qa7#
      • 1...f4!
  • Keys
    • 1.Sf4!
      • 1...Kd4
        • 2.Sxf3#
      • 1...fxe5
        • 2.Qxe5#
      • 1...fxg5
        • 2.Sxd7#
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Qa7#
      • 1...f2
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(e);OGATE,XR(L)::QAB(M)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::S(H),XP(b)
      • P(d);OGATE,P_SPINP(d),XS(H)::QAR2(M),XP(d)
      • P(d);XP(I)::R(L)+S(H),XP(e)
      • P(e);XP(J)::R(L)+S(H),XP(e)
      • P(e);OGATE,XR(L)::QAB(M)
      • P(b);N_GUARD::S(C)
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