MESON Chess Problem Database

Problem Display
PID: 246710 (8/1Q2P3/4pppn/3N4/3NkB2/2P3p1/6P1/2K2B2 w - - 0 1)

Shanshin, Valery Yurevich

Moscow Ty., 2014

8/1Q2P3/4pppn/3N4/3NkB2/2P3p1/6P1/2K2B2

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.e8S?
      • threat
        • 2.Sd6#
        • 2.Sexf6#
      • 1...Sg4
        • 2.Sd6#
      • 1...Sf5
        • 2.Sexf6#
      • 1...Sf7
        • 2.Sexf6#
      • 1...Sg8
        • 2.Sd6#
      • 1...f5
        • 2.Sd6#
        • 2.Sef6#
      • 1...exd5!
  • Keys
    • 1.Se2!
      • threat
        • 2.Sxg3#
      • 1...Kd3
        • 2.Sxg3#
      • 1...Kf5
        • 2.Se3#
      • 1...exd5
        • 2.Qb1#
      • 1...Sf5
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(I);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);::S(I)
        • S(f);::S(I),XP(d)
      • Refutation
        • P(c);P_SPINP(c),XS(G)
  • Actual
    • S(E);
    • Threat
      • S(E),XP(a)
    • Vars
      • K(b);S_FLIGHT::B(B)+S(E),XP(a)
      • K(b);S_FLIGHT::S(G)
      • P(c);P_SPINP(c),SBLOCK,XS(G)::QAB(H)
      • S(f);SBLOCK::QAB(H)+S(G)
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