MESON Chess Problem Database

Problem Display
PID: 96382 (8/8/8/8/1r2kPBK/2P2r1p/3R4/2B2Qn1 w - - 0 1)

Draiska, Imants

2nd HM., Problem TT, 1959

8/8/8/8/1r2kPBK/2P2r1p/3R4/2B2Qn1

#2

7 + 5

3310 2345 Chess Problems 1997
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Rd4#
    • 1...Kxf4
      • 2.Re2#
    • 1...Rb1
      • 2.Rd4#
    • 1...Rb2
      • 2.Rd4#
    • 1...Rb3
      • 2.Rd4#
    • 1...Rd4
      • 2.Rxd4#
    • 1...Rb5
      • 2.Rd4#
    • 1...Rb6
      • 2.Rd4#
    • 1...Rb7
      • 2.Rd4#
    • 1...Rb8
      • 2.Rd4#
    • 1...Se2
      • 2.Qxf3#
  • Tries
    • 1.Bf5+?
      • 1...Ke3
        • 2.Rd1#
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Re2#
        • 2.Rf2#
        • 2.Rg2#
        • 2.Rh2#
        • 2.Rd3#
        • 2.Rd4#
        • 2.Rd5#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Kxf4
        • 2.Rd5#
      • 1...Kxf5!
    • 1.Qc4+?
      • 1...Ke3
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Re2#
        • 2.Rg2#
        • 2.Rh2#
      • 1...Rxc4!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qe5#
      • 1...Ke3
        • 2.Re2#
      • 1...Kxf4
        • 2.Rd4#
      • 1...Rxf4
        • 2.Qe8#
      • 1...Rxb5
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • K(e);P-FLIGHT::B(A)+R(C)
    • K(e);P-FLIGHT,P_SPINR(b),XP(E)::B(A)+R(C)
    • R(d);N_GUARD::R1(C)
    • R(d);N_GUARD::R1(C),XR(d)
    • S(a);N_GUARD::QAB1(B),XR(b)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINR(b),XP(E)::B(A)+R(C)
      • Refutation
        • K(e);P_PINP(E),S_FLIGHT,XB(F)
    • Try
      • Q(B);CHECK
      • Refutation
        • R(d);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(e);P-FLIGHT::B(A)+R(C),DCHECK
      • K(e);P-FLIGHT,XP(E)::B(A)+R(C),DCHECK
      • R(b);P_PINB(F),SBLOCK,XP(E)::QAR(B)
      • R(d);N_GUARD,XQ(B)::R1(C)
HTML5 logo

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).