MESON Chess Problem Database

Problem Display
PID: 93919 (6Q1/pq6/P1N1p3/3kp3/b3N3/3PP3/2P1K3/4b3 w - - 0 1)

Zimmermann, Stepan

Ceske listy sachove, 1897

6Q1/pq6/P1N1p3/3kp3/b3N3/3PP3/2P1K3/4b3

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa6
      • 2.Se7#
    • 1...Qa8
      • 2.Se7#
    • 1...Qc8
      • 2.Se7#
    • 1...Qb1
      • 2.Se7#
    • 1...Qb2
      • 2.Se7#
    • 1...Qb3
      • 2.Se7#
    • 1...Qb5
      • 2.Se7#
    • 1...Qb6
      • 2.Se7#
    • 1...Qe7
      • 2.Sxe7#
    • 1...Qb8
      • 2.Se7#
    • 1...Bxc6
      • 2.c4#
  • Tries
    • 1.Qd8+?
      • 1...Qd7
        • 2.Se7#
        • 2.Qxd7#
      • 1...Kxc6!
    • 1.axb7?
      • threat
        • 2.Se7#
      • 1...Bxc6
        • 2.c4#
      • 1...Bb4
        • 2.Sxb4#
      • 1...Bh4
        • 2.Sb4#
      • 1...Kxc6!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Se7#
      • 1...Kxc6
        • 2.Qxb7#
      • 1...Qxc6
        • 2.c4#
      • 1...Bxc6
        • 2.c4#
      • 1...Qe7
        • 2.Sb4#
        • 2.Sxe7#
        • 2.c4#
      • 1...Bb4
        • 2.Sxb4#
      • 1...Bh4
        • 2.Sb4#

There are these versions: 93911

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • Q(g);N_GUARD,P_PINP(C),XP(F)::S(G)
    • Q(g);N_GUARD::S(G)
    • Q(g);N_GUARD,P_PINP(A)::S(G)
    • Q(g);N_GUARD,P_PINP(C)::S(G)
    • Q(g);N_GUARD::S(G),XQ(g)
    • B(b);SBLOCK,XS(G)::P(A)
  • Tries
    • Try
      • Q(H);CHECK,N_PINP(e)
      • Refutation
        • K(c);S_FLIGHT,XS(G)
    • Try
      • P(F);XQ(g)
      • Threat
        • S(G)
      • Vars
        • B(b);SBLOCK,XS(G)::P(A)
        • B(a);N_GUARD::S(G),XB(a)
        • B(a);N_GUARD::S(G)
      • Refutation
        • K(c);N_SPINP(e),S_FLIGHT,XS(G)
  • Actual
    • Q(H);N_PINP(e)
    • Threat
      • S(G)
    • Vars
      • K(c);OGATEB,P_SPINQ(g),S_FLIGHT,XS(G)::QAB1(H),XQ(g)
      • Q(g);P_SPINQ(g),XS(G)::P(A)
      • B(b);SBLOCK,XS(G)::P(A)
      • B(a);N_GUARD::S(G),XB(a)
      • B(a);N_GUARD::S(G)
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