MESON Chess Problem Database

Problem Display
PID: 260920 (3R4/2R1p3/1n1qb3/rr3p2/3k1P2/1p1pN3/1P1N1KB1/7Q w - - 0 1)

Frei-Schuler, Gottlieb

Neue Zurcher Zeitung, 1960

3R4/2R1p3/1n1qb3/rr3p2/3k1P2/1p1pN3/1P1N1KB1/7Q

#2

9 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Qh8#
    • 1...Rd5
      • 2.Sxb3#
    • 1...Bd5
      • 2.Sxf5#
    • 1...Sd5
      • 2.Rc4#
  • Tries
    • 1.Rxd6+?
      • 1...Rd5
        • 2.Sxb3#
        • 2.Qh8#
      • 1...Bd5
        • 2.Sxf5#
      • 1...Sd5
        • 2.Rc4#
        • 2.Qh8#
      • 1...exd6!
  • Keys
    • 1.Bb7!
      • threat
        • 2.Sf3#
      • 1...Qd5
        • 2.Qh8#
      • 1...Rd5
        • 2.Sxb3#
      • 1...Bd5
        • 2.Sxf5#
      • 1...Sd5
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(h);S_CUTR(e)::QAB(A)
    • R(e);N_GUARD,N_SPINQ(h),S_CUTB(i)::S(C),XP(a)
    • B(i);N_GUARD,N_SPINQ(h),S_CUTR(e)::S(F),XP(f)
    • S(g);N_GUARD,N_SPINQ(h),S_CUTB(i)::R1(H)
  • Tries
    • Try
      • R(I);CHECK,XQ(h)
      • Vars
        • B(i);P_SPINB(i)::S(F),XP(f)
      • Refutation
        • P(j);XR(I)
  • Actual
    • B(E);
    • Threat
      • S(C)
    • Vars
      • Q(h);S_CUTR(e)::QAB(A)
      • R(e);N_GUARD,N_SPINQ(h),S_CUTB(i)::S(C),XP(a)
      • B(i);N_GUARD,N_SPINQ(h),S_CUTR(e)::S(F),XP(f)
      • S(g);N_GUARD,N_SPINQ(h),S_CUTB(i)::R1(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).