MESON Chess Problem Database

Problem Display
PID: 234971 (8/8/7B/5N2/1Q1P2k1/1B6/8/6K1 w - - 0 1)

Akimov, Nikolai Nikolaevich

64 Shakhmatnoe obozrenie, 2009

8/8/7B/5N2/1Q1P2k1/1B6/8/6K1

#2

6 + 1

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bd1+?
      • 1...Kh3
        • 2.Qa3#
        • 2.Qc3#
        • 2.Qb3#
      • 1...Kxf5!
    • 1.Qe1?
      • 1...Kf3
        • 2.Bd1#
      • 1...Kh3
        • 2.Qg3#
        • 2.Qh4#
      • 1...Kxf5
        • 2.Qe6#
      • 1...Kh5!
    • 1.Qd2?
      • 1...Kf3
        • 2.Qg2#
      • 1...Kh3
        • 2.Qg2#
      • 1...Kh5
        • 2.Qg5#
      • 1...Kxf5!
    • 1.Qd6?
      • 1...Kh3
        • 2.Qg3#
      • 1...Kxf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Bd1#
      • 1...Kf3!
  • Keys
    • 1.Qe7!
      • 1...Kf3
        • 2.Bd1#
      • 1...Kh3
        • 2.Qh4#
      • 1...Kxf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Qg5#

Anticipated by 168589(2003)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::B(B)
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(C)
        • K(a);S_FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);S_FLIGHT::B(B)
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(C)
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