MESON Chess Problem Database

Problem Display
PID: 171465 (8/4N3/3KP3/6k1/8/7Q/5P2/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

1/3 HM., Tsorichnik, 1999

8/4N3/3KP3/6k1/8/7Q/5P2/8

#2

5 + 1

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qf5#
    • 1...Kf6
      • 2.Qh6#
  • Tries
    • 1.Kc5?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6!
    • 1.Kd5?
      • 1...Kf4
        • 2.Qf5#
        • 2.Qg3#
      • 1...Kf6!
    • 1.Kc6?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6!
    • 1.Kc7?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6!
    • 1.Kd7?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6!
    • 1.Qg4+?
      • 1...Kf6
        • 2.Sd5#
        • 2.Sg8#
        • 2.Qg6#
      • 1...Kh6
        • 2.Qg6#
      • 1...Kxg4!
    • 1.Qh2?
      • 1...Kf6
        • 2.Qe5#
        • 2.Qh6#
      • 1...Kg4!
    • 1.Qg3+?
      • 1...Kf6
        • 2.Qe5#
        • 2.Qg6#
      • 1...Kh6
        • 2.Qg6#
      • 1...Kh5!
    • 1.Qh5+?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6
        • 2.Qg6#
        • 2.Qe5#
        • 2.Qh6#
      • 1...Kxh5!
    • 1.Qh7?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6
        • 2.Qg6#
        • 2.Qh6#
      • 1...Kg4!
    • 1.f3?
      • 1...Kf6
        • 2.Qh6#
      • 1...Kf4!
    • 1.f4+?
      • 1...Kf6
        • 2.Qc3#
        • 2.Qh6#
        • 2.Qh8#
      • 1...Kxf4!
  • Keys
    • 1.Qf5+!
      • 1...Kh4
        • 2.Sg6#
      • 1...Kh6
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(a);S_FLIGHT::QAR1(B)
    • K(a);S_FLIGHT::QAR2(B)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(A)
  • Actual
    • Q(B);CHECK
    • Vars
      • K(a);S_FLIGHT::S(E)
      • K(a);S_FLIGHT::QAR1(B)
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