MESON Chess Problem Database

Problem Display
PID: 254565 (5N2/1r1rpbK1/qpB3p1/1n2k1p1/1B2P1Rp/8/1N6/6Q1 w - - 0 1)

Ulehla, Johann Viktor

Wiener Schachzeitung, 1937

5N2/1r1rpbK1/qpB3p1/1n2k1p1/1B2P1Rp/8/1N6/6Q1

#2

8 + 11

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sxd3#
    • 1...Rd4
      • 2.Qh2#
    • 1...Rd5
      • 2.Sc4#
    • 1...Rc7
      • 2.Sd3#
    • 1...Bc4
      • 2.Sxc4#
    • 1...Bd5
      • 2.Sd3#
    • 1...Be6
      • 2.Sxg6#
    • 1...Be8
      • 2.Sc4#
    • 1...Sd4
      • 2.Qh2#
    • 1...Sd6
      • 2.Bc3#
    • 1...e6
      • 2.Sc4#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Rxg5#
      • 1...Be6
        • 2.Sxg6#
      • 1...Sd6
        • 2.Bc3#
        • 2.Qc3#
      • 1...Sd4!
    • 1.Qc5+?
      • 1...Rd5
        • 2.Sd3#
        • 2.Sc4#
      • 1...Bd5
        • 2.Sd3#
        • 2.Sc4#
      • 1...bxc5!
    • 1.Qg3+?
      • 1...Kd4
        • 2.e5#
      • 1...hxg3!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Rxg5#
      • 1...Rd5
        • 2.Sc4#
      • 1...Bd5
        • 2.Sd3#
      • 1...Be6
        • 2.Sxg6#
      • 1...Sd4
        • 2.Qh2#
      • 1...Sd6
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • R(i);N_GUARD::S(B),XR(i)
    • R(i);SBLOCK::QAB(A)
    • R(i);S_CUTB(k)::S(B)
    • R(i);N_GUARD::S(B)
    • B(k);N_GUARD::S(B),XB(k)
    • B(k);S_CUTR(i)::S(B)
    • B(k);N_GUARD,SBLOCK::S(H),XP(g)
    • B(k);N_GUARD::S(B)
    • S(b);SBLOCK::QAB(A)
    • S(b);N_GUARD,SBLOCK,S_CUTR(i)::B(C)
    • P(j);S_CUTB(k)::S(B)
  • Tries
    • Try
      • Q(A);
      • Threat
        • R(E),XP(d)
      • Vars
        • B(k);N_GUARD,SBLOCK::S(H),XP(g)
      • Refutation
        • S(b);
    • Try
      • Q(A);CHECK
      • Refutation
        • P(f);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::R(E)+P(D)
      • Refutation
        • P(a);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • R(E),XP(d)
    • Vars
      • R(i);S_CUTB(k)::S(B)
      • B(k);S_CUTR(i)::S(B)
      • B(k);N_GUARD,SBLOCK::S(H),XP(g)
      • S(b);SBLOCK::QAB(A)
      • S(b);N_GUARD,SBLOCK,S_CUTR(i)::B(C)
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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).