MESON Chess Problem Database

Problem Display
PID: 234997 (4B3/1p6/8/2p2p2/1pP1k1n1/3NP3/1KQ1PB2/3N4 w - - 0 1)

Akimov, Nikolai Nikolaevich

ChessStar, 2018

4B3/1p6/8/2p2p2/1pP1k1n1/3NP3/1KQ1PB2/3N4

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Sxc5#
    • 1...b3
      • 2.Sc3#
    • 1...f4
      • 2.Bg6#
    • 1...b5
      • 2.Bc6#
    • 1...b6
      • 2.Bc6#
  • Tries
    • 1.Bg3?
      • threat
        • 2.Sc1#
        • 2.Se1#
        • 2.S3f2#
        • 2.Sxb4#
        • 2.Sxc5#
        • 2.Se5#
      • 1...f4
        • 2.Bg6#
      • 1...Sf2
        • 2.S3xf2#
        • 2.Sxc5#
      • 1...Se5
        • 2.S3f2#
        • 2.Sxc5#
        • 2.Sxe5#
      • 1...b3
        • 2.S3f2#
        • 2.Sxc5#
      • 1...Sxe3!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sxc5#
      • 1...bxc3+
        • 2.Sxc3#
      • 1...Sxe3
        • 2.Qe5#
      • 1...f4
        • 2.Bg6#
      • 1...b6
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(c);SBLOCK::QAB(C)+S(F),DCHECK,XP(d)
    • P(a);N_GUARD::S(A)
    • P(e);OGATEB::B(I)
    • P(f);N_GUARD::B(I)
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(6)
      • Vars
        • P(e);OGATEB::B(I)
      • Refutation
        • S(c);XP(G)
  • Actual
    • Q(C);
    • Threat
      • S(F),XP(d)
    • Vars
      • P(a);CHECK,XQ(C)::S(A),XP(a)
      • S(c);N_GUARD,XP(G)::QAR1(C)
      • P(e);OGATEB::B(I)
      • P(f);N_GUARD::B(I)
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