MESON Chess Problem Database

Problem Display
PID: 87250 (8/1r4n1/N4B1Q/8/Kpk1P3/8/8/n1N2b2 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Uralski Problemist, 1999

8/1r4n1/N4B1Q/8/Kpk1P3/8/8/n1N2b2

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qd4#
        • 2.Qc5#
      • 1...Rb5
        • 2.Qd4#
      • 1...Rc7
        • 2.Qd4#
      • 1...Rd7
        • 2.Qc5#
      • 1...Sc2
        • 2.Qc5#
        • 2.Qb3#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sf5
        • 2.Qc5#
      • 1...Se6!
    • 1.Qg5?
      • threat
        • 2.Qc5#
        • 2.Qd5#
      • 1...Rb5
        • 2.Qxb5#
      • 1...Rc7
        • 2.Qb5#
        • 2.Qd5#
      • 1...Rd7
        • 2.Qb5#
        • 2.Qc5#
      • 1...Sb3
        • 2.Qd5#
      • 1...Se6
        • 2.Qd5#
      • 1...Sf5!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qd4#
        • 2.Qd5#
      • 1...Rb5
        • 2.Qd4#
      • 1...Rd7
        • 2.Qxb4#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sc2
        • 2.Qxc2#
        • 2.Qd5#
      • 1...Sb3
        • 2.Qc2#
        • 2.Qd5#
      • 1...Sf5
        • 2.Qd5#
      • 1...Se6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);::QAR1(F)
        • S(a);N_GUARD::QAB1(F),XS(a)
        • S(f);::QAR1(F)
      • Refutation
        • S(f);
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);N_GUARD::QAB1(F),XR(e)
        • S(a);::QAB1(F)
        • S(f);::QAB1(F)
      • Refutation
        • S(f);
  • Actual
    • Q(F);
    • Threat
      • DUALS(2)
    • Vars
      • R(e);::QAR1(F)
      • R(e);N_GUARD::QAR1(F),XP(c)
      • B(b);N_GUARD::QAB1(F),XB(b)
      • S(f);::QAB1(F)
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