MESON Chess Problem Database

Problem Display
PID: 229245 (8/N6K/1n6/1p5p/p3N1pn/1k4r1/RB4p1/1B2Qbb1 w - - 0 1)

Bajtay, Jozsef

Nepszava, 1926

8/N6K/1n6/1p5p/p3N1pn/1k4r1/RB4p1/1B2Qbb1

#2

7 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Qxc3#
    • 1...Bd3
      • 2.Qc3#
    • 1...Be3
      • 2.Qc3#
    • 1...Sf3
      • 2.Qc3#
    • 1...b4
      • 2.Sd2#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Sd2#
        • 2.Sa5#
        • 2.Qb4#
      • 1...a3
        • 2.Qb4#
      • 1...Rc3
        • 2.Sd2#
        • 2.Qxc3#
      • 1...Rd3
        • 2.Sa5#
        • 2.Qb4#
      • 1...Bd3
        • 2.Sa5#
        • 2.Qc3#
        • 2.Qb4#
      • 1...Be3
        • 2.Sa5#
        • 2.Qc3#
        • 2.Qb4#
      • 1...Bc5
        • 2.Sd2#
        • 2.Sa5#
      • 1...Sf3
        • 2.Sa5#
        • 2.Qc3#
        • 2.Qb4#
      • 1...Sc4
        • 2.Qb4#
        • 2.Qd1#
      • 1...Sd5
        • 2.Sd2#
        • 2.Sa5#
      • 1...b4
        • 2.Sd2#
        • 2.Sa5#
        • 2.Qxb4#
      • 1...Kc4!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Sd2#
      • 1...Kc4
        • 2.Qxb5#
      • 1...Rd3
        • 2.Qxb5#
      • 1...Bd3
        • 2.Qc3#
      • 1...Be3
        • 2.Qc3#
      • 1...Sf3
        • 2.Qc3#
      • 1...Sc4
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD::QAR1(B),XR(e)
    • B(a);P_PINS(E),S_CUTR(e)::QAR1(B)
    • B(b);S_CUTR(e)::QAR1(B)
    • S(h);S_CUTR(e)::QAR1(B)
    • P(i);SBLOCK::S(E)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • P(f);::QAR1(B)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • S(E)
    • Vars
      • K(d);S_FLIGHT::QAB1(B),XP(i)
      • R(e);S_CUTB(a)::QAR2(B),XP(i)
      • B(a);P_PINS(E),S_CUTR(e)::QAR1(B)
      • B(b);S_CUTR(e)::QAR1(B)
      • S(h);S_CUTR(e)::QAR1(B)
      • S(k);S_CUTB(a)::QAR2(B),XP(i)
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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).