MESON Chess Problem Database

Problem Display
PID: 259574 (8/2KQPb2/2B5/2kpnn2/2q2N2/2R2p2/2NPpb2/8 w - - 0 1)

Erokhin, AP

Pravda Vostoka, 1948

(First published on Sat Aug 21 1948)

8/2KQPb2/2B5/2kpnn2/2q2N2/2R2p2/2NPpb2/8

#2

8 + 9

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bh5
      • 2.Se6#
      • 2.Qxd5#
    • 1...Be6
      • 2.Sxe6#
    • 1...Bg6
      • 2.Se6#
      • 2.Qxd5#
    • 1...Be8
      • 2.Se6#
      • 2.Qxd5#
    • 1...Sd3
      • 2.Sxd3#
    • 1...Sg4
      • 2.Sd3#
    • 1...Sxc6
      • 2.Qxc6#
    • 1...Sg6
      • 2.Sd3#
    • 1...Sxd7
      • 2.Sd3#
    • 1...Se3
      • 2.Qd6#
      • 2.d4#
    • 1...Sg3
      • 2.Qd6#
    • 1...Sd4
      • 2.Qd6#
    • 1...Sh4
      • 2.Qd6#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sh6
      • 2.Qd6#
    • 1...Sxe7
      • 2.Qd6#
      • 2.Qxe7#
    • 1...Sg7
      • 2.Qd6#
  • Tries
    • 1.d4+?
      • 1...Sxd4
        • 2.Qd6#
      • 1...Bxd4!
  • Keys
    • 1.Ba4!
      • threat
        • 2.Qb5#
      • 1...Sxd7
        • 2.Sd3#
      • 1...Be8
        • 2.Se6#
        • 2.Qxd5#
      • 1...Sc6
        • 2.Sd3#
        • 2.Qxc6#
      • 1...Sd4
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • B(i);N_GUARD::S(D),XB(i)
    • S(g);N_GUARD::S(D),XS(g)
    • S(g);N_GUARD::S(D)
    • S(g);OGATE,XB(E)::QAR1(G),XS(g)
    • S(g);N_GUARD,XQ(G)::S(D)
    • S(h);N_GUARD::QAB1(G)
    • S(h);N_GUARD::QAB1(G),XS(h)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • S(h);XP(B)::QAB1(G)
      • Refutation
        • B(b);XP(B)
  • Actual
    • B(E);
    • Threat
      • QAR1(G)
    • Vars
      • S(g);N_GUARD,XQ(G)::S(D)
      • S(h);N_GUARD::QAB1(G)
      • S(h);N_GUARD::QAB1(G),XS(h)
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