MESON Chess Problem Database

Problem Display
PID: 150545 (2R5/3R4/2b2p2/KNB2P2/npkPBp2/2P3qr/3b2Q1/Nn6 w - - 0 1)

Wirtanen, Erkki Aukusti

Springaren, 1965

2R5/3R4/2b2p2/KNB2P2/npkPBp2/2P3qr/3b2Q1/Nn6

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc3
      • 2.Sd6#
    • 1...Bxc3
      • 2.Sd6#
    • 1...Be3
      • 2.Qf1#
      • 2.Qe2#
    • 1...Sbxc3
      • 2.Sd6#
    • 1...Saxc3
      • 2.Sd6#
    • 1...bxc3
      • 2.Sd6#
    • 1...f3
      • 2.Qf1#
  • Tries
    • 1.Bd5+?
      • 1...Kd3
        • 2.Qe4#
      • 1...Bxd5!
  • Keys
    • 1.Bxb4!
      • threat
        • 2.Sd6#
      • 1...Qxc3
        • 2.Qg8#
      • 1...Bxc3
        • 2.Qa2#
      • 1...Sbxc3
        • 2.Sa3#
      • 1...Saxc3
        • 2.Rxc6#
      • 1...f3
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • Q(c);SBLOCK,XP(C)::S(G)
    • B(b);SBLOCK,XP(C)::S(G)
    • S(a);SBLOCK,XP(C)::S(G)
    • S(e);SBLOCK,XP(C)::S(G)
    • P(f);SBLOCK,XP(C)::S(G)
    • P(h);S_CUTQ(c)::QAB(B)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • K(g);S_FLIGHT::QAB1(B)
      • Refutation
        • B(i);XB(E)
  • Actual
    • B(H);P_PINB(i),XP(f)
    • Threat
      • S(G)
    • Vars
      • Q(c);OGATE,P_PINB(H),XP(C)::QAB(B)
      • B(b);OGATE,P_PINB(H),XP(C)::QAB(B)
      • S(a);N_GUARD,XP(C)::S(G)
      • S(e);N_GUARD,XP(C)::R(K),XB(i)
      • P(h);S_CUTQ(c)::QAB(B)
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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).