MESON Chess Problem Database

Problem Display
PID: 135505 (B1rR3B/q3NK1Q/4pP2/2n1k1p1/N3Pp2/2n5/3R4/8 w - - 0 1)

Ancin, Andrej

Schach-Echo, 1936

B1rR3B/q3NK1Q/4pP2/2n1k1p1/N3Pp2/2n5/3R4/8

#2

10 + 8

14649 Andrej Ancin - Chess Compositions 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Qb6
      • 2.Sg6#
    • 1...Qb8
      • 2.Sg6#
    • 1...Qxa4
      • 2.Sg6#
    • 1...Qa5
      • 2.Sg6#
    • 1...Qa6
      • 2.Sg6#
    • 1...Qxe7+
      • 2.fxe7#
    • 1...Sd7
      • 2.Sg6#
    • 1...f3
      • 2.Qh2#
    • 1...g4
      • 2.Qh5#
  • Keys
    • 1.Sb2!
      • threat
        • 2.Sc4#
      • 1...Qxe7+
        • 2.fxe7#
      • 1...S5xe4
        • 2.Sd3#
      • 1...f3
        • 2.Qh2#
      • 1...Qa2
        • 2.Sg6#
      • 1...Qa4
        • 2.Sg6#
      • 1...Qa6
        • 2.Sg6#
      • 1...Sb3
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...S5a4
        • 2.Sd3#
      • 1...Sa6
        • 2.Sd3#
      • 1...Sb7
        • 2.Sd3#
      • 1...Sd7
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • Q(g);N_PINS(E)::S(E)
    • Q(g);N_PINS(E),XS(B)::S(E)
    • Q(g);CHECK,OGATE,XS(E)::B(J)+P(D),XQ(g)
    • S(c);N_PINS(E)::S(E)
    • P(b);OGATEB::QAB(G)
    • P(e);OGATEB::QAR(G)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • Q(g);CHECK,OGATE,XS(E)::B(J)+P(D),XQ(g)
      • S(c);N_GUARD,XP(C)::S(B)
      • P(b);OGATEB::QAB(G)
      • Q(g);N_PINS(E)::S(E)
      • S(c);N_GUARD::S(B)
      • S(c);N_GUARD::S(B),XS(c)
      • S(c);N_GUARD,N_PINS(E)::S(B)
      • S(c);N_PINS(E)::S(E)
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