MESON Chess Problem Database

Problem Display
PID: 172308 (R7/n7/8/1kP5/1B6/2K5/8/Q7 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

R7/n7/8/1kP5/1B6/2K5/8/Q7

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Qf1#
      • 2.Qa4#
      • 2.Qa6#
    • 1...Sc8
      • 2.Qa4#
      • 2.Qa6#
  • Tries
    • 1.Qf1+?
      • 1...Ka4
        • 2.Rxa7#
        • 2.Qa6#
      • 1...Kc6!
    • 1.Qa2?
      • 1...Sc6
        • 2.Qc4#
        • 2.Qe2#
        • 2.Qa4#
        • 2.Qa6#
      • 1...Sc8
        • 2.Qa4#
        • 2.Qa6#
      • 1...Kc6!
    • 1.Qa3?
      • 1...Sc6
        • 2.Qa4#
        • 2.Qa6#
      • 1...Sc8
        • 2.Qa4#
        • 2.Qa6#
      • 1...Kc6!
  • Keys
    • 1.Qh1!
      • 1...Ka4
        • 2.Qc6#
      • 1...Ka6
        • 2.Qc6#
      • 1...Sc6
        • 2.Qf1#
      • 1...Sc8
        • 2.Ra5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P_SPINS(b),S_FLIGHT::QAB(A)
      • K(a);P_SPINS(b),S_FLIGHT::QAR2(A)
      • S(b);SBLOCK::QAB(A)
      • S(b);OGATE::R1(E)
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