MESON Chess Problem Database

Problem Display
PID: 173626 (8/r2P2p1/1b3NQ1/qR1PkN1p/3rp3/2n3PK/8/B3R3 w - - 0 1)

Boros, Sandor

Il Problema, 1933

8/r2P2p1/1b3NQ1/qR1PkN1p/3rp3/2n3PK/8/B3R3

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Rxe4#
    • 1...Rd2
      • 2.Rxe4#
    • 1...Rd3
      • 2.Rxe4#
    • 1...Rxd5
      • 2.Rxe4#
    • 1...Rxd7
      • 2.Sxd7#
    • 1...Sb1
      • 2.Rxe4#
    • 1...Sd1
      • 2.Rxe4#
    • 1...Sa2
      • 2.Rxe4#
    • 1...Sa4
      • 2.Rxe4#
    • 1...Sxb5
      • 2.Rxe4#
    • 1...Sxd5
      • 2.Rxe4#
    • 1...h4
      • 2.Sg4#
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Qe6#
      • 1...Rxd5
        • 2.Sc5#
      • 1...Sxd5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 10
  • Sets
    • R(b);N_GUARD,P_SPINS(a)::R1(B),XP(c)
    • R(b);N_GUARD,P_PINP(C),P_SPINS(a)::R1(B),XP(c)
    • R(b);N_GUARD,P_SPINR(b),P_SPINS(a),XP(F)::R1(B),XP(c)
    • R(h);XP(J)::S(H),XR(h)
    • S(a);N_GUARD,P_SPINR(b)::R1(B),XP(c)
    • S(a);N_GUARD,P_SPINR(b),XR(E)::R1(B),XP(c)
    • S(a);N_GUARD,P_SPINR(b),P_SPINS(a),XP(F)::R1(B),XP(c)
    • P(f);N_GUARD::S(H)
  • Actual
    • S(H);XP(c)
    • Threat
      • QAR1(I)
    • Vars
      • R(b);N_GUARD,P_SPINR(b),P_SPINS(a),SBLOCK,XP(F)::R(B)+S(H)
      • S(a);N_GUARD,P_SPINR(b),P_SPINS(a),XP(F)::R(B)+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).