MESON Chess Problem Database

Problem Display
PID: 145619 (B2B1Q2/1n6/6p1/1R1N4/3K1Nkp/5R1p/7P/7n w - - 0 1)

Shanshin, Valery Yurevich

Zhuravlev, Andrey Nikolaevich

3rd Prize, Bron MT, 2009

B2B1Q2/1n6/6p1/1R1N4/3K1Nkp/5R1p/7P/7n

#2

9 + 6

23 Die Schwalbe 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sa5
      • 2.Se3#
      • 2.Sf6#
    • 1...Sc5
      • 2.Se3#
    • 1...Sd6
      • 2.Se3#
      • 2.Sf6#
    • 1...Sxd8
      • 2.Se3#
      • 2.Sf6#
  • Tries
    • 1.Se6?
      • threat
        • 2.Se3#
      • 1...Kh5
        • 2.Sf6#
      • 1...Sc5
        • 2.Sf6#
      • 1...g5!
    • 1.Sxg6?
      • threat
        • 2.Se3#
        • 2.Qf5#
      • 1...Sg3
        • 2.Se3#
      • 1...Sc5
        • 2.Qf5#
      • 1...Sd6
        • 2.Se3#
        • 2.Sf6#
      • 1...Kh5!
    • 1.Rf1?
      • threat
        • 2.Se3#
        • 2.Sf6#
      • 1...Sc5
        • 2.Se3#
      • 1...Sf2!
    • 1.Rf2?
      • threat
        • 2.Se3#
        • 2.Sf6#
      • 1...Sc5
        • 2.Se3#
      • 1...Sxf2!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Sf6#
      • 1...Kf5
        • 2.Se3#
      • 1...Sc5
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(f);::S(F)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(F)
      • Vars
        • K(c);S_FLIGHT::R(E)+S(F),DCHECK
        • S(f);::S(F)
      • Refutation
        • P(e);
    • Try
      • S(D);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::S(F)
        • S(f);::QAB1(I)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);::S(F)
      • Refutation
        • S(a);
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);::S(F)
      • Refutation
        • S(a);XR(B)
  • Actual
    • Q(I);
    • Threat
      • S(F)
    • Vars
      • K(c);S_FLIGHT::R(E)+S(F),DCHECK
      • S(f);::S(F)
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