MESON Chess Problem Database

Problem Display
PID: 135883 (8/2N2B2/1p6/1P6/1kNn1Q2/8/P7/1K6 w - - 0 1)

Koltunova, Yelena

Lomakovsky, Aleksandr

Mano, Leonardo

Pavlovets, Igor

Pavlovets, Tatiana

Stelling, Roberto

Veliky, Mikola Moiseyovich

1st Prize, Ukraine Ty., 2009

8/2N2B2/1p6/1P6/1kNn1Q2/8/P7/1K6

#2

7 + 3

114 Springaren 2009
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qd2#
    • 1...Kc5
      • 2.Qd6#
  • Tries
    • 1.Qd6+?
      • 1...Ka4
        • 2.Qa3#
      • 1...Kc3!
  • Keys
    • 1.Sb2!
      • 1...Ka3
        • 2.Qd6#
      • 1...Kc3
        • 2.Sd5#
      • 1...Ka5
        • 2.Qd2#
      • 1...Kc5
        • 2.Sd3#

Anticipated by 109981(1992), 7417(1999)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(C);P_PINS(b)
    • Vars
      • K(a);N_SPINS(b),S_FLIGHT::QAB(D)
      • K(a);N_SPINS(b),S_FLIGHT::S(F)
      • K(a);N_SPINS(b),S_FLIGHT::S(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).