MESON Chess Problem Database

Problem Display
PID: 156024 (2K5/p7/2Rp1P2/r3p3/1b1knn1R/p1q1pP2/B1P4r/B1N3Q1 w - - 0 1)

Schirdewan, Udo

Nederlandse Bond van Probleemvrienden, 1932

2K5/p7/2Rp1P2/r3p3/1b1knn1R/p1q1pP2/B1P4r/B1N3Q1

#2

10 + 12

1577 Jaarboek 1932

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sb3#
      • 2.Rc4#
    • 1...Sf2
      • 2.Se2#
    • 1...Sc5
      • 2.Rxd6#
    • 1...Se2
      • 2.Rxe4#
      • 2.Qd1#
    • 1...Sg2
      • 2.Se2#
      • 2.Rxe4#
      • 2.Qd1#
    • 1...Sd3
      • 2.Rxe4#
    • 1...Sh3
      • 2.Rxe4#
    • 1...Sd5
      • 2.Sb3#
      • 2.Rxe4#
      • 2.Rc4#
    • 1...Sh5
      • 2.Rxe4#
    • 1...Se6
      • 2.Rxe4#
    • 1...Sg6
      • 2.Rxe4#
    • 1...d5
      • 2.Sb3#
  • Tries
    • 1.Se2+?
      • 1...Sxe2
        • 2.Rxe4#
        • 2.Qd1#
      • 1...Rxe2!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qxe4#
      • 1...Sxf6
        • 2.Qd3#
      • 1...Sxg6
        • 2.Rxe4#
      • 1...Sd2
        • 2.Qd3#
      • 1...Sf2
        • 2.Se2#
      • 1...Sg3
        • 2.Qd3#
      • 1...Sc5
        • 2.Rxd6#
      • 1...Sg5
        • 2.Qd3#
      • 1...d5
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(g);N_SPINP(d),P_SPINS(h),S_CUTR(a)::S(B)
    • S(g);N_PINR(H),P_SPINS(h),SBLOCK::R(H),XP(k)
    • S(h);OGATE,P_SPINS(g)::R1(G),XS(g)
    • P(k);SBLOCK::S(B)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • R(a);XS(B)
  • Actual
    • Q(C);N_PINP(d)
    • Threat
      • QAR1(C),XS(g)
    • Vars
      • S(g);OGATE,P_SPINS(h),XP(I)::QAR1(C)
      • S(h);OGATE,P_SPINS(g),XQ(C)::R1(G),XS(g)
      • S(g);OGATE,P_SPINS(h)::QAR1(C)
      • S(g);P_SPINS(h),S_CUTR(a)::S(B)
      • S(g);N_PINR(H),P_SPINS(h),SBLOCK::R(H),XP(k)
      • P(k);SBLOCK::S(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).