MESON Chess Problem Database

Problem Display
PID: 162093 (1B3n2/pB2p3/2K1p3/1PP3p1/4kbRN/3R4/8/2N5 w - - 0 1)

Ovchinnikov, Valentin N

Zadachi i Etyudi, 1928

1B3n2/pB2p3/2K1p3/1PP3p1/4kbRN/3R4/8/2N5

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sg6
      • 2.Kd7#
    • 1...Sd7
      • 2.Kxd7#
    • 1...Sh7
      • 2.Kd7#
    • 1...gxh4
      • 2.Rxf4#
    • 1...e5
      • 2.Kc7#
    • 1...a5
      • 2.Kb6#
    • 1...a6
      • 2.Kb6#
  • Tries
    • 1.Bd6?
      • threat
        • 2.Kc7#
      • 1...gxh4
        • 2.Rxf4#
      • 1...exd6!
    • 1.Bc7?
      • 1...gxh4
        • 2.Rxf4#
      • 1...Sg6
        • 2.Kd7#
      • 1...Sd7
        • 2.Kxd7#
      • 1...Sh7
        • 2.Kd7#
      • 1...a5
        • 2.Kb6#
      • 1...a6
        • 2.Kb6#
      • 1...e5!
    • 1.b6?
      • threat
        • 2.Kb5#
      • 1...gxh4
        • 2.Rxf4#
      • 1...a6!
  • Keys
    • 1.Ba8!
      • 1...gxh4
        • 2.Rxf4#
      • 1...Sg6
        • 2.Kd7#
      • 1...Sd7
        • 2.Kxd7#
      • 1...Sh7
        • 2.Kd7#
      • 1...e5
        • 2.Kc7#
      • 1...a5
        • 2.Kb6#
      • 1...a6
        • 2.Kb6#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(g);::B(H)+K(G)
    • S(g);::B(H)+K(G),XS(g)
    • P(c);N_GUARD,XS(D)::R1(C),XB(b)
    • P(d);SBLOCK::B(H)+K(G)
    • P(e);::B(H)+K(G)
  • Tries
    • Try
      • B(I);
      • Threat
        • B(H)+K(G)
      • Vars
        • P(c);N_GUARD,XS(D)::R1(C),XB(b)
      • Refutation
        • P(f);XB(I)
    • Try
      • B(I);
      • Vars
        • P(c);N_GUARD,XS(D)::R1(C),XB(b)
        • S(g);::B(H)+K(G)
        • S(g);::B(H)+K(G),XS(g)
        • P(e);::B(H)+K(G)
      • Refutation
        • P(d);
    • Try
      • P(E);
      • Threat
        • B(H)+K(G)
      • Vars
        • P(c);N_GUARD,XS(D)::R1(C),XB(b)
      • Refutation
        • P(e);
  • Actual
    • B(H);
    • Vars
      • P(c);N_GUARD,XS(D)::R1(C),XB(b)
      • S(g);::B(H)+K(G)
      • S(g);::B(H)+K(G),XS(g)
      • P(d);SBLOCK::B(H)+K(G)
      • P(e);::B(H)+K(G)
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