MESON Chess Problem Database

Problem Display
PID: 175163 (7b/1N2N3/1n6/8/1p1k1p2/pP2RP2/2P2Q2/1n4K1 w - - 0 1)

van Dijk, Johannes

Discendo Discimus, 1902

7b/1N2N3/1n6/8/1p1k1p2/pP2RP2/2P2Q2/1n4K1

#2

8 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Rd3#
    • 1...Sd2
      • 2.Qxd2#
    • 1...Sc3
      • 2.Re1#
      • 2.Re2#
      • 2.Re4#
      • 2.Re6#
      • 2.Qd2#
    • 1...Sd5
      • 2.Sf5#
      • 2.Sc6#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Rd3#
        • 2.Re4#
      • 1...Sd2
        • 2.Rd3#
        • 2.Qxd2#
      • 1...Sc3
        • 2.Rd3#
        • 2.Qd2#
      • 1...fxe3!
    • 1.Qf1?
      • threat
        • 2.Qd3#
      • 1...Kxe3
        • 2.Qd3#
        • 2.Qf2#
      • 1...fxe3!
    • 1.c3+?
      • 1...Sxc3
        • 2.Qd2#
      • 1...bxc3!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qxf4#
      • 1...Kxe3
        • 2.Qf2#
      • 1...fxe3
        • 2.Qxh8#
      • 1...Be5
        • 2.Rd3#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Sc3
        • 2.Qd2#
      • 1...Sd5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(g);SBLOCK::QAB(C)+R(E),DCHECK
    • S(a);N_GUARD::QAR2(C),XS(a)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);XR(E)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Refutation
        • P(e);XR(E)
    • Try
      • P(B);CHECK
      • Vars
        • S(a);XP(B)::QAR2(C)
      • Refutation
        • P(c);XP(B)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C),XP(e)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(E)::QAB1(C)
      • P(e);SBLOCK,XR(E)::QAB(C),XB(g)
      • B(g);SBLOCK::R1(E)
      • S(a);N_GUARD::QAR2(C),XS(a)
      • S(a);N_GUARD::QAR2(C)
      • S(f);SBLOCK::S(H)
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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).