MESON Chess Problem Database

Problem Display
PID: 222451 (8/b6K/8/2pk1p2/2NPRp2/5R2/B1Q5/8 w - - 0 1)

Hulsen, Bernhard

Nuova Rivista degli Scacchi, 1884

8/b6K/8/2pk1p2/2NPRp2/5R2/B1Q5/8

#2

7 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sb6+?
      • 1...Kd6
        • 2.Qxc5#
      • 1...Kc6!
    • 1.Re5+?
      • 1...Kxd4
        • 2.Rd3#
        • 2.Rxf4#
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qb2#
        • 2.Qd2#
        • 2.Qf2#
        • 2.Qc3#
      • 1...Kc6!
  • Keys
    • 1.Qa4!
      • 1...Kxe4
        • 2.Sd2#
      • 1...cxd4
        • 2.Re5#
      • 1...fxe4
        • 2.Qd7#
      • 1...Bb6
        • 2.Qa8#
      • 1...Bb8
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(B),XP(b)
      • Refutation
        • K(c);P_SPINP(b),S_FLIGHT
    • Try
      • R(F);CHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(c);S_FLIGHT,XR(F)::S(D)
      • P(b);SBLOCK,XP(E)::R1(F)
      • P(d);SBLOCK,XR(F)::QAR2(B)
      • B(e);OGATE::QAB(B)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).