MESON Chess Problem Database

Problem Display
PID: 231155 (5b2/p7/p2pB3/r2P3b/2Nkrp2/2R5/1Q2p2K/8 w - - 0 1)

Svedberg, Erik Daniel

Dagens Nyheder, 1927

5b2/p7/p2pB3/r2P3b/2Nkrp2/2R5/1Q2p2K/8

#2

6 + 10

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qd2#
  • Tries
    • 1.Rc1+?
      • 1...Kd3
        • 2.Qc3#
        • 2.Qd2#
      • 1...Kc5!
    • 1.Rc2+?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kc5!
    • 1.Rb3+?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kc5!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sc6#
      • 1...Kxe5
        • 2.Re3#
      • 1...Rxe5
        • 2.Qb4#
      • 1...dxe5
        • 2.Qd2#
      • 1...Re3
        • 2.Rc4#
      • 1...Rc5
        • 2.Rd3#
      • 1...Be8
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(e);SBLOCK::QAR2(A)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(D)::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(b);S_FLIGHT,XS(D)::QAB(A)+R(C)
      • R(c);SBLOCK,XS(D)::QAR2(A)
      • P(h);SBLOCK,XS(D)::QAR2(A)
      • R(c);SBLOCK::QAB(A)+R(C),DCHECK
      • R(e);SBLOCK::QAB(A)+R(C),DCHECK
      • B(f);N_GUARD::S(D)
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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).