MESON Chess Problem Database

Problem Display
PID: 282151 (b4nKB/2rp4/3p2p1/1P1k4/1P1Np2R/P4Q2/4P3/8 w - - 0 1)

Yakimovich, Daniil

The Problemist Supplement, 2024

b4nKB/2rp4/3p2p1/1P1k4/1P1Np2R/P4Q2/4P3/8

#2

9 + 8

3713 Snap 2025

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qb3#
    • 1...Rc4
      • 2.Qxe4#
    • 1...Ra7
      • 2.Qb3#
    • 1...Rb7
      • 2.Qb3#
    • 1...Bc6
      • 2.Qb3#
    • 1...Sh7
      • 2.Qf7#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qxe4#
        • 2.Qb3#
      • 1...Kc4
        • 2.Qd3#
      • 1...Ke6
        • 2.Qxe4#
        • 2.Qf7#
      • 1...Rxc6
        • 2.Qxe4#
      • 1...exf3!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qxe4#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kxe6
        • 2.Qf7#
      • 1...exf3
        • 2.Sxc7#
      • 1...Rc4
        • 2.Sf4#

This anticipates 282874(2025)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • K(b);N_SPINP(a),S_CUTR(e),S_FLIGHT::QAB1(C)
    • R(e);SBLOCK::QAB1(C),XP(a)
    • R(e);N_GUARD::QAB(C)
    • B(g);S_CUTR(e)::QAB(C)
    • S(h);N_GUARD::QAB(C)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(C)
        • R(e);XS(E)::QAB1(C),XP(a)
      • Refutation
        • P(a);N_SPINP(a),XQ(C)
  • Actual
    • S(E);
    • Threat
      • QAB1(C),XP(a)
    • Vars
      • K(b);N_GUARD,S_FLIGHT::QAB1(C)
      • K(b);N_SPINP(a),OGATEB,S_FLIGHT,XS(E)::QAB1(C)
      • P(a);N_SPINP(a),XQ(C)::S(E),XR(e)
      • R(e);SBLOCK::S(E)
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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).