MESON Chess Problem Database

Problem Display
PID: 181762 (3Q4/4p3/q1p1P1Kp/1npPk3/1N6/3R2nr/3N1P2/8 w - - 0 1)

Volf, Josef

Dom i Svet, 1905

3Q4/4p3/q1p1P1Kp/1npPk3/1N6/3R2nr/3N1P2/8

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Qc7#
      • 2.Qb8#
    • 1...Sc3
      • 2.Qc7#
      • 2.Qb8#
    • 1...Sd4
      • 2.Qc7#
      • 2.Qb8#
    • 1...Sa7
      • 2.Qc7#
      • 2.Qb8#
    • 1...Sc7
      • 2.Qxc7#
  • Tries
    • 1.Re3+?
      • 1...Kd4
        • 2.Sc2#
        • 2.Qh8#
      • 1...Se4
        • 2.Rxe4#
      • 1...Kf4!
    • 1.Qb8+?
      • 1...Sc7
        • 2.Qxc7#
      • 1...Sd6!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Sf3#
      • 1...Kxd4
        • 2.Qh8#
      • 1...Sxd4
        • 2.Qc7#
        • 2.Qb8#
      • 1...cxd4
        • 2.Sd3#
      • 1...cxd5
        • 2.Qxd5#
      • 1...Se4
        • 2.Rxe4#
      • 1...Qa3
        • 2.Sxc6#
      • 1...Sf1
        • 2.Re4#
      • 1...Sh1
        • 2.Re4#
      • 1...Se2
        • 2.Re4#
      • 1...Sf5
        • 2.Re4#
      • 1...Sh5
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • S(c);N_GUARD::QAB(H),XS(c)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R1(C),XS(a)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB(H),XS(c)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • R(C);
    • Threat
      • S(A)
    • Vars
      • K(e);S_FLIGHT,XR(C)::QAB(H)
      • P(d);SBLOCK,XR(C)::S(D)
      • P(g);OGATE,P_PINP(F),XP(E)::QAR1(H),XP(g)
      • S(a);N_GUARD::R1(C),XS(a)
      • Q(f);N_GUARD::S(D),XP(g)
      • S(a);N_GUARD::R1(C)
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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).