MESON Chess Problem Database

Problem Display
PID: 168991 (8/p2K1B2/5b1Q/Rnp1kN2/2P1P1r1/3b1pP1/3P1Nn1/3q2B1 w - - 0 1)

Agapov, Igor Alexeyevich

SuperProblem, 2017

8/p2K1B2/5b1Q/Rnp1kN2/2P1P1r1/3b1pP1/3P1Nn1/3q2B1

#2

11 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bh4
      • 2.Qe6#
    • 1...Bg5
      • 2.Qe6#
    • 1...Be7
      • 2.Qe6#
    • 1...Bg7
      • 2.Qe6#
    • 1...Bd8
      • 2.Qe6#
    • 1...Bh8
      • 2.Qe6#
    • 1...Sa3
      • 2.Rxc5#
    • 1...Sd4
      • 2.Rxc5#
    • 1...Sd6
      • 2.Rxc5#
  • Tries
    • 1.Se7?
      • threat
        • 2.Sc6#
      • 1...Kd4
        • 2.Sc6#
        • 2.Qxf6#
      • 1...Rxe4
        • 2.Sxd3#
      • 1...Bxe4
        • 2.Sxg4#
      • 1...Sd4
        • 2.Rxc5#
      • 1...Bxe7!
    • 1.Ra6?
      • threat
        • 2.Re6#
        • 2.Qxf6#
      • 1...Rxg3
        • 2.Re6#
      • 1...Rxe4
        • 2.Qxf6#
      • 1...Bxc4
        • 2.Qxf6#
      • 1...Bxe4
        • 2.Qxf6#
      • 1...Rg6
        • 2.Re6#
      • 1...Bh4
        • 2.Re6#
        • 2.Qe6#
      • 1...Bg5
        • 2.Re6#
        • 2.Qe6#
      • 1...Be7
        • 2.Re6#
        • 2.Qe6#
      • 1...Bg7
        • 2.Re6#
        • 2.Qe6#
      • 1...Bd8
        • 2.Re6#
        • 2.Qe6#
      • 1...Bh8
        • 2.Re6#
        • 2.Qe6#
      • 1...Sf4
        • 2.Qxf6#
      • 1...Sd4
        • 2.Qxf6#
      • 1...Sc7
        • 2.Qxf6#
      • 1...Sd6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sc6#
      • 1...Kxd4
        • 2.Qxf6#
      • 1...Rxe4
        • 2.Sxd3#
      • 1...Bxe4
        • 2.Sxg4#
      • 1...Sxd4
        • 2.Rxc5#
      • 1...cxd4
        • 2.Rxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • B(i);OGATE::QAR1(I)
    • S(f);OGATE,P_SPINP(g)::R(G),XP(g)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • R(e);SBLOCK,XP(F)::S(C),XB(c)
        • B(c);P_PINP(B),SBLOCK,XP(F)::S(C),XR(e)
        • S(f);OGATE,P_SPINP(g),SBLOCK::R(G),XP(g)
      • Refutation
        • B(i);XS(H)
    • Try
      • R(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);XP(D)::R1(G)
        • R(e);XP(F)::QAB1(I),XB(i)
        • B(c);P_PINP(B),XP(E)::QAB1(I),XB(i)
        • B(c);P_PINP(B),XP(F)::QAB1(I),XB(i)
        • R(e);::R1(G)
        • S(b);::QAB1(I),XB(i)
        • S(f);::QAB1(I),XB(i)
      • Refutation
        • S(f);
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(h);S_FLIGHT,XS(H)::QAB(I),XB(i)
      • R(e);SBLOCK,XP(F)::S(C),XB(c)
      • B(c);SBLOCK,XP(F)::S(C),XR(e)
      • S(f);OGATE,P_SPINP(g),SBLOCK,XS(H)::R(G),XP(g)
      • P(g);OGATEB,P_SPINS(f),SBLOCK,XS(H)::R(G),XS(f)
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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).