MESON Chess Problem Database

Problem Display
PID: 163560 (2r2n2/1b1p1R2/5Q2/3pPP1p/5k1B/2Np1P1P/3K1n2/5RN1 w - - 0 1)

di Scala, Pascal

Phenix, 1991

2r2n2/1b1p1R2/5Q2/3pPP1p/5k1B/2Np1P1P/3K1n2/5RN1

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Sxd5#
    • 1...Ba6
      • 2.Sxd5#
    • 1...Sxh3
      • 2.Sxh3#
    • 1...Se4+
      • 2.fxe4#
    • 1...Sg4
      • 2.fxg4#
    • 1...Se6
      • 2.fxe6#
    • 1...Sg6
      • 2.fxg6#
  • Tries
    • 1.Sge2+?
      • 1...Kxf3
        • 2.Rxf2#
      • 1...dxe2!
    • 1.Re7?
      • threat
        • 2.Qg5#
      • 1...Se4+
        • 2.fxe4#
      • 1...Sxh3
        • 2.Sxh3#
      • 1...Se6
        • 2.fxe6#
      • 1...Sh7!
    • 1.Rg7?
      • threat
        • 2.Bg3#
      • 1...Se4+
        • 2.fxe4#
      • 1...Sg4
        • 2.fxg4#
      • 1...Sg6
        • 2.fxg6#
      • 1...Sh1!
    • 1.Qg7?
      • threat
        • 2.Bg3#
        • 2.Qg3#
      • 1...Se4+
        • 2.fxe4#
      • 1...Sg4
        • 2.fxg4#
      • 1...Sg6
        • 2.fxg6#
      • 1...Sh1!
  • Keys
    • 1.Qd6!
      • threat
        • 2.e6#
      • 1...Se4+
        • 2.fxe4#
      • 1...Rc6
        • 2.Sxd5#
      • 1...Sg4
        • 2.fxg4#
      • 1...Se6
        • 2.fxe6#
      • 1...Sg6
        • 2.fxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(h);S_CUTB(f)::S(D),XP(d)
    • B(f);N_GUARD::S(D),XP(d)
    • S(a);XP(F)::S(B),XS(a)
    • S(a);CHECK,OGATE::R(A)+P(E),XS(a)
    • S(a);OGATE::R(A)+P(E),XS(a)
    • S(i);OGATE::QAR(J)+P(I),XS(i)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINS(a),XP(E)::R1(A),XS(a)
      • Refutation
        • P(b);XS(B)
    • Try
      • R(K);
      • Threat
        • QAB1(J)
      • Vars
        • S(a);CHECK,OGATE::R(A)+P(E),XS(a)
        • S(a);XP(F)::S(B),XS(a)
        • S(i);OGATE::QAR(J)+P(I),XS(i)
      • Refutation
        • S(i);
    • Try
      • R(K);
      • Threat
        • B(G)
      • Vars
        • S(a);CHECK,OGATE::R(A)+P(E),XS(a)
        • S(a);OGATE::R(A)+P(E),XS(a)
        • S(i);OGATE::QAR(J)+P(I),XS(i)
      • Refutation
        • S(a);
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);CHECK,OGATE::R(A)+P(E),XS(a)
        • S(a);OGATE::R(A)+P(E),XS(a)
        • S(i);OGATE::R(K)+P(I),XS(i)
      • Refutation
        • S(a);
  • Actual
    • Q(J);
    • Threat
      • QAB(J)+P(H)
    • Vars
      • S(a);CHECK,OGATE::R(A)+P(E),XS(a)
      • R(h);S_CUTB(f)::S(D),XP(d)
      • S(a);OGATE::R(A)+P(E),XS(a)
      • S(i);OGATE::R(K)+P(I),XS(i)
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).