MESON Chess Problem Database

Problem Display
PID: 162342 (2NN3K/PBkP3R/pp6/1p4Bn/Q2p2b1/2bp4/8/1nR5 w - - 0 1)

Alekseev, Yuri Mikhailovich

Olympic Ty., 2016

2NN3K/PBkP3R/pp6/1p4Bn/Q2p2b1/2bp4/8/1nR5

#2

10 + 10

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Qc6#
  • Tries
    • 1.Se6+?
      • 1...Bxe6
        • 2.d8Q#
        • 2.d8B#
      • 1...Kxb7!
    • 1.Qxb5?
      • threat
        • 2.Qc4#
        • 2.Qc6#
        • 2.Qe5#
        • 2.Qxb6#
      • 1...Sf6
        • 2.Qxb6#
      • 1...Bf3
        • 2.Qe5#
        • 2.Qxb6#
      • 1...Be6
        • 2.Qc6#
        • 2.Qe5#
        • 2.Qxb6#
      • 1...Sd2
        • 2.Qc6#
        • 2.Qe5#
        • 2.Qxb6#
      • 1...Sa3
        • 2.Qc6#
        • 2.Qe5#
        • 2.Qxb6#
      • 1...Sg7
        • 2.Qc6#
      • 1...axb5!
  • Keys
    • 1.Qxd4!
      • threat
        • 2.Qe5#
      • 1...Sf6
        • 2.Qxb6#
      • 1...Sg7
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(f);OGATE::QAR1(B)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • B(e);XS(I)::P=Q
      • Refutation
        • K(j);N_SPINB(b),P-FLIGHT,XB(E)
    • Try
      • Q(B);XP(f)
      • Threat
        • DUALS(4)
      • Vars
        • S(g);::QAB1(B),XP(i)
        • S(g);::QAR1(B)
      • Refutation
        • P(h);XQ(B)
  • Actual
    • Q(B);P_SPINQ(B),XP(d)
    • Threat
      • QAB(B)
    • Vars
      • S(g);N_PINQ(B)::QAB1(B),XP(i)
      • S(g);N_PINQ(B)::QAB1(B)
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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).