MESON Chess Problem Database

Problem Display
PID: 269100 (7B/8/4P1K1/1RpNPP2/PNPkP2Q/1r3p2/B2P1P2/2R5 w - - 0 1)

Surkov, Ruslan Albertovich

2nd Prize, 64 Shakhmatnoe obozrenie, 2006

7B/8/4P1K1/1RpNPP2/PNPkP2Q/1r3p2/B2P1P2/2R5

#2

16 + 4

6490 yacpdb 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.dxc3#
    • 1...Rd3
      • 2.Sc2#
      • 2.Sc6#
    • 1...Re3
      • 2.dxe3#
      • 2.fxe3#
  • Tries
    • 1.Sc3?
      • 1...Kxc4
        • 2.Se2#
      • 1...Rxc3
        • 2.dxc3#
      • 1...Rxb4
        • 2.Qd8#
      • 1...Rb1
        • 2.Qd8#
      • 1...Rb2
        • 2.Qd8#
      • 1...Ra3
        • 2.Qd8#
      • 1...cxb4!
    • 1.Se7?
      • threat
        • 2.Sec6#
      • 1...cxb4
        • 2.Rd5#
      • 1...Rxb4!
  • Keys
    • 1.Qd8!
      • 1...Kxe4
        • 2.Qh4#
      • 1...Rxb4
        • 2.Sc3#
      • 1...cxb4
        • 2.Sf6#
      • 1...Rb1
        • 2.Sc3#
      • 1...Rb2
        • 2.Sc3#
      • 1...Ra3
        • 2.Sc3#
      • 1...Rc3
        • 2.Sxc3#
      • 1...Rd3
        • 2.Sc3#
      • 1...Re3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE::P(C),XR(a)
  • Tries
    • Try
      • S(K);
      • Vars
        • K(c);P-FLIGHT,P_SPINR(a),S_CUTP(b),XP(G)::R(A)+S(K)
        • R(a);OGATE,XS(K)::P(C),XR(a)
        • R(a);XS(F)::QAR(I)
        • R(a);::QAR(I)
      • Refutation
        • P(d);XS(F)
    • Try
      • S(K);
      • Threat
        • S(K)
      • Vars
        • P(d);OGATE,XS(F)::R1(J)
      • Refutation
        • R(a);XS(F)
  • Actual
    • Q(I);
    • Vars
      • K(c);OGATEB,P-FLIGHT,XP(H)::QAR(I)
      • R(a);XS(F)::QAR(I)+S(K)
      • P(d);XS(F)::QAR(I)+S(K)
      • R(a);::QAR(I)+S(K)
      • R(a);::QAR(I)+S(K),XR(a)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).