MESON Chess Problem Database

Problem Display
PID: 174530 (4B3/4Q3/8/6n1/7k/6pP/6K1/8 w - - 0 1)

Volchek, Viktor Fedorovich

Comm., Problemist Ukraini 18. TT, 2017

4B3/4Q3/8/6n1/7k/6pP/6K1/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qc5?
      • 1...Sxh3
        • 2.Qh5#
      • 1...Sf3
        • 2.Qh5#
      • 1...Se4
        • 2.Qh5#
      • 1...Se6
        • 2.Qh5#
      • 1...Sh7
        • 2.Qh5#
      • 1...Sf7!
    • 1.Qd6?
      • threat
        • 2.Qxg3#
        • 2.Qf4#
        • 2.Qh6#
      • 1...Sxh3
        • 2.Qxg3#
      • 1...Se4
        • 2.Qf4#
        • 2.Qh6#
      • 1...Se6
        • 2.Qxg3#
      • 1...Sf7!
    • 1.Qe2?
      • threat
        • 2.Qg4#
        • 2.Qh5#
      • 1...Sxh3
        • 2.Qh5#
      • 1...Sf7
        • 2.Qg4#
      • 1...Sf3!
    • 1.Qe3?
      • threat
        • 2.Qf4#
        • 2.Qxg3#
      • 1...Sxh3
        • 2.Qxg3#
      • 1...Sf3
        • 2.Qf4#
        • 2.Qh6#
      • 1...Se4
        • 2.Qf4#
        • 2.Qh6#
      • 1...Se6
        • 2.Qh6#
        • 2.Qxg3#
      • 1...Sf7!
    • 1.Qe5?
      • threat
        • 2.Qxg3#
        • 2.Qf4#
      • 1...Sxh3
        • 2.Qxg3#
        • 2.Qh5#
      • 1...Se4
        • 2.Qf4#
        • 2.Qh5#
      • 1...Se6
        • 2.Qxg3#
        • 2.Qh5#
      • 1...Sf7!
    • 1.Qc7?
      • threat
        • 2.Qxg3#
        • 2.Qf4#
      • 1...Sxh3
        • 2.Qxg3#
      • 1...Se4
        • 2.Qf4#
      • 1...Se6
        • 2.Qxg3#
      • 1...Sf7!
    • 1.Qf7?
      • threat
        • 2.Qh5#
        • 2.Qf4#
      • 1...Sxh3
        • 2.Qh5#
      • 1...Se6
        • 2.Qh5#
      • 1...Sxf7!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qh6#
      • 1...Sxh3
        • 2.Qxg3#
      • 1...Sf7
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);N_PINS(c)
      • Vars
        • S(c);OGATE,XP(B)::QAR1(C)
        • S(c);OGATE::QAR1(C)
      • Refutation
        • S(c);
    • Try
      • Q(C);N_PINS(c)
      • Threat
        • DUALS(3)
      • Vars
        • S(c);XP(B)::QAB1(C),XP(a)
        • S(c);::QAB1(C),XP(a)
      • Refutation
        • S(c);
    • Try
      • Q(C);N_PINS(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XP(B)::QAR1(C)
        • S(c);::QAR1(C)
      • Refutation
        • S(c);
    • Try
      • Q(C);N_PINS(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XP(B)::QAB1(C),XP(a)
      • Refutation
        • S(c);
    • Try
      • Q(C);N_PINS(c)
      • Threat
        • DUALS(2)
      • Refutation
        • S(c);
    • Try
      • Q(C);N_PINS(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XP(B)::QAB1(C),XP(a)
        • S(c);::QAR2(C)
        • S(c);::QAB1(C),XP(a)
      • Refutation
        • S(c);
    • Try
      • Q(C);N_PINS(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XP(B)::QAR1(C)
        • S(c);::QAR1(C)
      • Refutation
        • S(c);XQ(C)
  • Actual
    • Q(C);N_PINS(c)
    • Threat
      • QAR2(C)
    • Vars
      • S(c);OGATE,XP(B)::QAB1(C),XP(a)
      • S(c);OGATE::QAR1(C)
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