MESON Chess Problem Database

Problem Display
PID: 105433 (2N5/2N5/2p5/p3p1R1/P2k2Kp/3PpPnp/2P1p2B/2R1Q3 w - - 0 1)

Erokhin, Vladimir Alekseevich

Revista Romana de Sah, 1981

2N5/2N5/2p5/p3p1R1/P2k2Kp/3PpPnp/2P1p2B/2R1Q3

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qc3#
    • 1...e4
      • 2.Se6#
  • Tries
    • 1.Qxa5?
      • threat
        • 2.Se6#
        • 2.Qb4#
        • 2.Qxe5#
      • 1...e1Q
        • 2.Se6#
        • 2.Qxe5#
      • 1...e1B
        • 2.Se6#
        • 2.Qxe5#
      • 1...e4
        • 2.Se6#
        • 2.Qb4#
        • 2.Qc5#
        • 2.Qe5#
      • 1...c5!
    • 1.c3+?
      • 1...Kc5
        • 2.Rxe5#
      • 1...Kxd3!
  • Keys
    • 1.Rxe5!
      • 1...Kxe5
        • 2.Qc3#
      • 1...Sf1
        • 2.Se6#
      • 1...Sh1
        • 2.Se6#
      • 1...Se4
        • 2.Se6#
      • 1...Sf5
        • 2.Se6#
      • 1...Sh5
        • 2.Se6#
      • 1...c5
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • K(e);P_SPINP(h),S_FLIGHT::QAR2(B)
    • P(h);::S(J)
  • Tries
    • Try
      • Q(B);XP(g)
      • Threat
        • DUALS(3)
      • Refutation
        • P(i);
    • Try
      • P(C);CHECK
      • Vars
        • K(e);P_SPINP(h),S_FLIGHT::R(I),XP(h)
      • Refutation
        • K(e);P-FLIGHT,XP(E)
  • Actual
    • R(I);XP(h)
    • Vars
      • K(e);P_SPINS(c),S_FLIGHT,XR(I)::QAB(B)
      • S(c);::S(J)
      • P(i);N_GUARD::R1(I)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).