MESON Chess Problem Database

Problem Display
PID: 165890 (B2QKn2/1r1pp3/3p1p1r/3PkP1P/2R1N3/5pN1/4PP2/3R4 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Vasilenko, Anatoly Grigorovich

1st Comm., StrateGems, 2015

B2QKn2/1r1pp3/3p1p1r/3PkP1P/2R1N3/5pN1/4PP2/3R4

#2

12 + 9

145 StrateGems 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Sc5?
      • threat
        • 2.Re4#
      • 1...Rb4
        • 2.Sd3#
      • 1...dxc5!
    • 1.Sg5?
      • threat
        • 2.Sxf3#
        • 2.Sf7#
        • 2.Re4#
      • 1...fxe2
        • 2.Sf3#
        • 2.Sf7#
        • 2.Re4#
        • 2.f4#
      • 1...Rh7
        • 2.Sxf3#
        • 2.Re4#
      • 1...Rb3
        • 2.Sf7#
        • 2.Re4#
      • 1...Rb4
        • 2.Sxf3#
        • 2.Sf7#
      • 1...fxg5!
    • 1.Sxd6?
      • threat
        • 2.Sf7#
      • 1...Kxd6
        • 2.Qxe7#
      • 1...exd6
        • 2.Re4#
      • 1...Rh7!
    • 1.Sxf6?
      • threat
        • 2.Sg4#
      • 1...Kxf6
        • 2.Qxe7#
      • 1...Rxf6
        • 2.Re4#
      • 1...exf6
        • 2.Re4#
      • 1...Rg6!
    • 1.Qxe7+?
      • 1...Se6
        • 2.Qxd6#
      • 1...Kf4!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Sxf3#
      • 1...Kxd5
        • 2.Qa5#
      • 1...fxe2
        • 2.Sf3#
      • 1...Rb3
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(E)
      • Vars
        • R(f);::S(F)
      • Refutation
        • P(c);XS(F)
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Refutation
        • P(d);XS(F)
    • Try
      • S(F);XP(c)
      • Threat
        • S(F)
      • Vars
        • K(b);P_SPINP(g),S_FLIGHT,XS(F)::QAB1(K),XP(h)
        • P(h);SBLOCK,XS(F)::R1(E)
      • Refutation
        • R(e);
    • Try
      • S(F);XP(d)
      • Threat
        • S(F)
      • Vars
        • K(b);P_SPINP(h),S_FLIGHT,XS(F)::QAB1(K),XP(h)
        • R(e);SBLOCK,XS(F)::R1(E)
        • P(h);XS(F)::R1(E)
      • Refutation
        • R(e);
    • Try
      • Q(K);CHECK,XP(h)
      • Vars
        • S(i);P_SPINS(i)::QAB1(K),XP(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • S(F),XP(a)
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINR(f),XP(G)::QAR(K)
      • P(a);XP(B)::S(F)
      • R(f);::R1(E)
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