MESON Chess Problem Database

Problem Display
PID: 263773 (1r1R4/1n6/3N4/8/3rPKp1/3NP1p1/2Pkp3/Q1R1b3 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1932

1r1R4/1n6/3N4/8/3rPKp1/3NP1p1/2Pkp3/Q1R1b3

#2

9 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Sc4#
    • 1...Rc4
      • 2.Sxc4#
    • 1...Rxe4+
      • 2.Sxe4#
    • 1...Rd5
      • 2.Sc4#
  • Tries
    • 1.Qa5+?
      • 1...Rb4
        • 2.Qxb4#
      • 1...Sxa5!
  • Keys
    • 1.c4!
      • threat
        • 2.Qc3#
      • 1...Rxe4+
        • 2.Sxe4#
      • 1...Kxd3
        • 2.Qxd4#
      • 1...Rxd3
        • 2.Qb2#
      • 1...Rxc4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(e);N_GUARD,N_PINP(F),XS(D)::S(H)
    • R(e);N_GUARD::S(H),XR(e)
    • R(e);CHECK,XP(F)::S(H),XR(e)
    • R(e);N_GUARD,N_PINP(F)::S(H)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::QAB(A),XR(e)
      • Refutation
        • S(g);XQ(A)
  • Actual
    • P(C);
    • Threat
      • QAB1(A)
    • Vars
      • R(e);CHECK,XP(F)::S(H),XR(e)
      • K(b);OGATEB,P-FLIGHT,XS(D)::QAR1(A),XR(e)
      • R(e);N_PINP(F),SBLOCK,XS(D)::QAR2(A)
      • R(e);XP(C)::S(H),XR(e)
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).