MESON Chess Problem Database

Problem Display
PID: 150811 (Q7/bp6/P1P5/3P4/k7/2B5/K3B3/8 w - - 0 1)

Akimov, Nikolai Nikolaevich

Sachsische Zeitung, 2007

Q7/bp6/P1P5/3P4/k7/2B5/K3B3/8

#2

7 + 3

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...bxc6
      • 2.Qxc6#
    • 1...b5
      • 2.Bd1#
  • Tries
    • 1.Qxb7?
      • threat
        • 2.Bd1#
        • 2.Bb5#
        • 2.Qb3#
        • 2.Qb4#
        • 2.Qb5#
      • 1...Bc5
        • 2.Bd1#
        • 2.Bb5#
        • 2.Qb3#
        • 2.Qb5#
      • 1...Bb6!
    • 1.Qxa7?
      • threat
        • 2.Qd4#
        • 2.axb7#
      • 1...bxa6
        • 2.Qd4#
        • 2.Qxa6#
      • 1...bxc6
        • 2.Qd4#
      • 1...b5
        • 2.Bd1#
      • 1...b6!
    • 1.Qd8?
      • threat
        • 2.Qa5#
      • 1...b6
        • 2.Qh4#
      • 1...Bb6!
  • Keys
    • 1.Qe8!
      • threat
        • 2.cxb7#
      • 1...bxa6
        • 2.c7#
      • 1...bxc6
        • 2.Qxc6#
      • 1...b5
        • 2.Bd1#
      • 1...b6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE,XP(F)::QAB(G),XP(c)
    • P(c);SBLOCK::B(B)
  • Tries
    • Try
      • Q(G);XP(c)
      • Threat
        • DUALS(5)
      • Refutation
        • B(b);
    • Try
      • Q(G);XB(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XP(F)::QAR(G)
        • P(c);SBLOCK::B(B)
      • Refutation
        • P(c);
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • P(c);S_CUTB(b)::QAB1(G)
      • Refutation
        • B(b);
  • Actual
    • Q(G);
    • Threat
      • QAB(G)+P(F),XP(c)
    • Vars
      • P(c);N_GUARD,XP(E)::QAB(G)+P(F)
      • P(c);OGATE,P_SPINP(c),XP(F)::QAB(G),XP(c)
      • P(c);SBLOCK::B(B)
      • P(c);S_CUTB(b)::QAR(G)
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