MESON Chess Problem Database

Problem Display
PID: 278236 (6n1/1p1K4/8/r2kppp1/1R3PN1/1Pp1B3/NbPPP3/1Q6 w - - 0 1)

Vasilenko, Anatoly Grigorovich

1st Comm., Pat a Mat, 2017

6n1/1p1K4/8/r2kppp1/1R3PN1/1Pp1B3/NbPPP3/1Q6

#2

11 + 9

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Sxc3#
    • 1...Ba3
      • 2.Sxc3#
    • 1...Sf6+
      • 2.Sxf6#
    • 1...Sh6
      • 2.Sf6#
    • 1...Se7
      • 2.Sf6#
    • 1...cxd2
      • 2.c4#
  • Tries
    • 1.Bb6?
      • threat
        • 2.Se3#
      • 1...Sf6+
        • 2.Sxf6#
      • 1...exf4
        • 2.Rd4#
      • 1...fxg4
        • 2.e4#
      • 1...gxf4!
    • 1.Rb5+?
      • 1...Ke4
        • 2.Sf2#
        • 2.Qh1#
        • 2.d3#
      • 1...Rxb5!
    • 1.Qd1?
      • threat
        • 2.dxc3#
      • 1...Sf6+
        • 2.Sxf6#
      • 1...Bc1
        • 2.Sxc3#
      • 1...cxd2!
    • 1.dxc3?
      • threat
        • 2.Qd1#
      • 1...Sf6+
        • 2.Sxf6#
      • 1...Bxc3
        • 2.Sxc3#
      • 1...Bc1!
  • Keys
    • 1.Re4!
      • threat
        • 2.Rxe5#
      • 1...Sf6+
        • 2.Sxf6#
      • 1...Kxe4
        • 2.Qh1#
      • 1...cxd2
        • 2.c4#
      • 1...exf4
        • 2.Re5#
      • 1...fxe4
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::S(B),XP(b)
    • S(i);CHECK,N_GUARD::S(J),XS(i)
    • S(i);N_GUARD::S(J)
    • P(b);OGATE,XP(D)::P(C)
  • Tries
    • Try
      • B(G);
      • Threat
        • S(J)
      • Vars
        • S(i);CHECK,N_GUARD::S(J),XS(i)
        • P(e);N_GUARD,XP(I)::R1(H)
        • P(f);N_GUARD,XS(J)::P(E)
      • Refutation
        • P(g);XP(I)
    • Try
      • R(H);CHECK
      • Refutation
        • R(c);XR(H)
    • Try
      • Q(A);
      • Threat
        • QAR(A)+P(D),XP(b)
      • Vars
        • S(i);CHECK,N_GUARD::S(J),XS(i)
        • B(a);N_GUARD::S(B),XP(b)
      • Refutation
        • P(b);P_SPINP(b),XP(D)
    • Try
      • P(D);XP(b)
      • Threat
        • QAR(A)
      • Vars
        • S(i);CHECK,N_GUARD::S(J),XS(i)
        • B(a);XP(D)::S(B),XB(a)
      • Refutation
        • B(a);
  • Actual
    • R(H);
    • Threat
      • R1(H),XP(e)
    • Vars
      • S(i);CHECK,N_GUARD::S(J),XS(i)
      • K(d);OGATEB,S_FLIGHT,XR(H)::QAB(A)
      • P(b);OGATE,XP(D)::P(C)
      • P(e);XP(I)::R1(H)
      • P(f);SBLOCK,XR(H)::S(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).