MESON Chess Problem Database

Problem Display
PID: 161687 (5Q2/8/7N/3K1Bk1/6P1/2B5/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Shakhmatnie Zadachi Tabri, 1987

5Q2/8/7N/3K1Bk1/6P1/2B5/8/8

#2

6 + 1

15148 Sadier Collection 2017
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Be6?
      • threat
        • 2.Qf6#
      • 1...Kg6
        • 2.Qg7#
      • 1...Kh4!
    • 1.Bg6?
      • 1...Kxg6
        • 2.Qg7#
      • 1...Kh4!
    • 1.Bd7?
      • threat
        • 2.Qf6#
      • 1...Kg6
        • 2.Qg7#
      • 1...Kh4!
    • 1.Bc8?
      • threat
        • 2.Qf6#
      • 1...Kg6
        • 2.Qg7#
      • 1...Kh4!
    • 1.Qb4?
      • 1...Kxh6
        • 2.Qf4#
      • 1...Kh4!
    • 1.Qe7+?
      • 1...Kxh6
        • 2.Bd2#
        • 2.Bg7#
        • 2.Qh4#
        • 2.Qf6#
        • 2.Qe3#
        • 2.Qg7#
      • 1...Kf4!
    • 1.Qb8?
      • 1...Kxh6
        • 2.Qf4#
      • 1...Kh4!
    • 1.Qd8+?
      • 1...Kxh6
        • 2.Qh4#
        • 2.Qf6#
      • 1...Kf4!
  • Keys
    • 1.Qa3!
      • 1...Kf4
        • 2.Bd2#
      • 1...Kh4
        • 2.Bf6#
      • 1...Kxh6
        • 2.Qc1#

Anticipated by 189680(1912), 190024(1913), 157400(1924), 161747(1973)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • QAB1(F)
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XB(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Threat
        • QAB1(F)
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Threat
        • QAB1(F)
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT,XS(E)::QAB(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT,XS(E)::QAB(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::B(A)
      • K(a);S_FLIGHT,XS(E)::QAB(F)
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