MESON Chess Problem Database

Problem Display
PID: 184743 (8/5r2/2P2P2/QN1k2P1/2R2p2/5P2/BB1pq3/Kn6 w - - 0 1)

von Gottschall, Hermann

Streifzuge durch des Gebeit des Schachproblems, 1908

8/5r2/2P2P2/QN1k2P1/2R2p2/5P2/BB1pq3/Kn6

#2

10 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Rc2#
    • 1...Qe1
      • 2.Rc1#
      • 2.Rc2#
    • 1...Qf2
      • 2.Rc1#
      • 2.Rc2#
    • 1...Qg2
      • 2.Rc1#
      • 2.Rc2#
    • 1...Qh2
      • 2.Rc1#
      • 2.Rc2#
    • 1...Qe5
      • 2.Rc1#
      • 2.Rc2#
      • 2.Rc3#
    • 1...Qe6
      • 2.Rc1#
      • 2.Rc2#
    • 1...Qe7
      • 2.Rc1#
      • 2.Rc2#
    • 1...Qe8
      • 2.Rc1#
      • 2.Rc2#
  • Tries
    • 1.Sc3+?
      • 1...Ke6
        • 2.Qd5#
      • 1...Kd6!
    • 1.Sa7+?
      • 1...Kd6
        • 2.Rd4#
      • 1...Ke6!
    • 1.Rc3+?
      • 1...Ke5
        • 2.Rc5#
      • 1...Qc4!
    • 1.Qb4?
      • threat
        • 2.Rc5#
        • 2.Qd6#
      • 1...Qxc4
        • 2.Qd6#
        • 2.Qxc4#
      • 1...Rxf6
        • 2.Sc7#
        • 2.Rc5#
      • 1...Qe5
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rc5#
      • 1...Qe6
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc5#
        • 2.Qc5#
      • 1...Qe7
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc5#
      • 1...Rd7
        • 2.Rc5#
      • 1...Ke6!
    • 1.Qd8+?
      • 1...Rd7
        • 2.Qxd7#
      • 1...Ke6!
  • Keys
    • 1.Be5!
      • threat
        • 2.Sd4#
        • 2.Sc7#
      • 1...Qxe5+
        • 2.Rc3#
      • 1...Kxe5
        • 2.Rc5#
      • 1...Ke6
        • 2.Sd4#
      • 1...Qxf3
        • 2.Sc7#
      • 1...Qxc4
        • 2.Sd4#
      • 1...Ra7
        • 2.Sc7#
      • 1...Rb7
        • 2.Sc7#
      • 1...Rc7
        • 2.Sd4#
        • 2.Sxc7#
      • 1...Sa3
        • 2.Sc7#
      • 1...Sc3
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_GUARD::B(B)+R(E)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(F)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(e);P-FLIGHT::R(E)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(e);P-FLIGHT::B(C)+R(E),DCHECK
      • Refutation
        • Q(c);P_SPINQ(c)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(f);::B(B)+R(E),DCHECK
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::QAR2(F),XR(f)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • B(C);
    • Threat
      • DUALS(2)
    • Vars
      • Q(c);CHECK,N_GUARD,SBLOCK,XB(C)::B(B)+R(E)
      • K(e);P-FLIGHT,XB(C)::R(E)
      • K(e);S_FLIGHT::S(G)
      • Q(c);XP(D)::QAR(F)+S(G),DCHECK
      • Q(c);P_SPINQ(c),XR(E)::QAR(F)+S(G)
      • R(f);::QAR(F)+S(G),DCHECK
      • S(a);::QAR(F)+S(G),DCHECK
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).