MESON Chess Problem Database

Problem Display
PID: 166164 (2K5/b2N4/1pk1Pp2/6nR/P3R3/2P1pNB1/1r6/7B w - - 0 1)

Guida, Marco

1st Prize, StrateGems, 2016

2K5/b2N4/1pk1Pp2/6nR/P3R3/2P1pNB1/1r6/7B

#2

10 + 7

145 StrateGems 2017
4901 Best Problems 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf3
      • 2.Rc4#
    • 1...Sh3
      • 2.Sd4#
      • 2.Rc4#
    • 1...Sxe4
      • 2.Sd4#
    • 1...Sxe6
      • 2.Rxe6#
    • 1...Sf7
      • 2.Sd4#
      • 2.Rc4#
    • 1...Sh7
      • 2.Sd4#
      • 2.Rc4#
  • Tries
    • 1.Sxg5?
      • threat
        • 2.Rc4#
      • 1...Kd5
        • 2.Rd4#
      • 1...Rg2!
    • 1.Rxe3?
      • threat
        • 2.Sd4#
      • 1...Kd5
        • 2.Sd2#
      • 1...Sxf3
        • 2.Bxf3#
      • 1...Rg2!
    • 1.Rd4?
      • threat
        • 2.Sfe5#
        • 2.Rd6#
      • 1...Sxf3
        • 2.Bxf3#
        • 2.Rc4#
        • 2.Rd6#
      • 1...Rg2
        • 2.Rd6#
      • 1...Rd2
        • 2.Sfe5#
      • 1...Bb8
        • 2.Sfe5#
      • 1...Sf7
        • 2.Sd2#
        • 2.Sfe5#
        • 2.Rc4#
      • 1...Se4!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Rc4#
      • 1...Kd5
        • 2.Rxe3#
      • 1...Sxe4
        • 2.Bxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(c);XS(C)::R(F)
    • S(c);XR(F)::S(C)
    • S(c);OGATE,XP(H)::R(F),XS(c)
  • Tries
    • Try
      • S(C);XS(c)
      • Threat
        • B(A)+R(F),DCHECK
      • Vars
        • K(e);S_FLIGHT::B(A)+R(F),DCHECK
      • Refutation
        • R(a);
    • Try
      • R(F);XP(b)
      • Threat
        • B(A)+S(C),DCHECK
      • Vars
        • K(e);P_SPINS(c),S_FLIGHT::B(A)+S(C)
        • S(c);OGATE,P_SPINS(c),XS(C)::B(A),XS(c)
      • Refutation
        • R(a);
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::R1(F)
        • R(a);::B(A)+S(C),DCHECK
        • B(g);::B(A)+S(C),DCHECK
      • Refutation
        • S(c);
  • Actual
    • S(C);
    • Threat
      • B(A)+R(F),DCHECK
    • Vars
      • K(e);P_SPINS(c),S_FLIGHT::B(A)+R(F),XP(b)
      • S(c);OGATE,P_SPINS(c),XR(F)::B(A),XS(c)
HTML5 logo

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).