MESON Chess Problem Database

Problem Display
PID: 122001 (K6B/4N3/R1QN1n2/2prk3/5pP1/1Brp1q2/4n3/8 w - - 0 1)

Seib, Wilhelm

Sydsvenska Dagbladet Snallposten, 1909

K6B/4N3/R1QN1n2/2prk3/5pP1/1Brp1q2/4n3/8

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg4
      • 2.Qxd5#
    • 1...Qf1
      • 2.Qxd5#
    • 1...Qf2
      • 2.Qxd5#
    • 1...Qe3
      • 2.Qxd5#
    • 1...Qg3
      • 2.Qxd5#
    • 1...Qh3
      • 2.Qxd5#
    • 1...Rd4
      • 2.Sf7#
      • 2.Sg6#
  • Keys
    • 1.Qe8!
      • threat
        • 2.Sef5#
      • 1...Rd4+
        • 2.Sd5#
      • 1...Rxd6+
        • 2.Sc6#
      • 1...Kd4
        • 2.Sc6#
      • 1...Ke6
        • 2.Sf7#
      • 1...Sd4
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • Q(d);N_GUARD,XP(B)::QAR1(D),XR(g)
    • Q(d);N_GUARD::QAR1(D),XR(g)
  • Actual
    • Q(D);
    • Threat
      • QAR(D)+S(F)
    • Vars
      • R(g);CHECK,SBLOCK::QAR(D)+S(F)
      • R(g);CHECK,SBLOCK,XS(E)::QAR(D)+S(F),DCHECK
      • K(h);S_FLIGHT::S(F)
      • K(h);N_SPINS(i),P-FLIGHT,P_SPINR(g)::R(C)+S(E)
      • S(a);SBLOCK::QAR(D)+S(F),DCHECK
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