MESON Chess Problem Database

Problem Display
PID: 15675 (2Q5/2n4b/2r3p1/2BR4/p1kNB3/8/3K4/8 w - - 0 1)

Mochalkin, Oleksandr Viktorovich

1st Prize, Ukraine Sports Committee, 1986

2Q5/2n4b/2r3p1/2BR4/p1kNB3/8/3K4/8

#2

6 + 6

3297 FIDE Album (1986-1988) 1995

SOLUTION

  • SOUND
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qf1#
        • 2.Qc3#
        • 2.Qd3#
      • 1...Rxc5
        • 2.Qc3#
      • 1...Rf6
        • 2.Qc3#
        • 2.Qd3#
      • 1...Sb5
        • 2.Qf1#
        • 2.Qd3#
      • 1...Sxd5!
    • 1.Qd7?
      • threat
        • 2.Bd3#
      • 1...Rxc5
        • 2.Qxa4#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Rd6
        • 2.Qxa4#
      • 1...g5!
    • 1.Qf8?
      • threat
        • 2.Qf1#
      • 1...Rxc5
        • 2.Qxc5#
      • 1...Sxd5
        • 2.Bd3#
      • 1...Rf6!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qb4#
      • 1...Rxc5
        • 2.Bd3#
      • 1...Sxd5
        • 2.Qb5#
      • 1...Rb6
        • 2.Bd3#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Sa6
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Vars
        • R(c);XB(D)::QAR1(F)
      • Refutation
        • S(e);XR(E)
    • Try
      • Q(F);
      • Threat
        • B(C)
      • Vars
        • R(c);OGATE,XB(D)::QAR2(F),XP(a)
        • S(e);OGATE,XR(E)::QAB1(F),XS(e)
        • R(c);OGATE::QAR2(F),XP(a)
      • Refutation
        • P(d);
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • R(c);OGATE,XB(D)::QAR1(F),XR(c)
        • S(e);SBLOCK,XR(E)::B(C)
      • Refutation
        • R(c);
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • R(c);XB(D)::B(C)
      • S(e);N_GUARD,XR(E)::QAB1(F)
      • R(c);::B(C)
      • S(e);N_GUARD::QAB1(F),XS(e)
      • S(e);N_GUARD::QAB1(F)
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