MESON Chess Problem Database

Problem Display
PID: 85416 (3KR1b1/3B4/Np1k4/p2P1r2/n1p1P1n1/6N1/1Q3q2/3Rr3 w - - 0 1)

Dittrich, Stefan

Muller, Dieter

Problemas, 1977

3KR1b1/3B4/Np1k4/p2P1r2/n1p1P1n1/6N1/1Q3q2/3Rr3

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sxf5#
    • 1...Qe3
      • 2.Sxf5#
    • 1...Qd4
      • 2.Sxf5#
    • 1...Qc5
      • 2.Sxf5#
    • 1...Qxb2
      • 2.Sxf5#
    • 1...Qc2
      • 2.Sxf5#
    • 1...Qd2
      • 2.Sxf5#
    • 1...Qe2
      • 2.Sxf5#
    • 1...Qg2
      • 2.Sxf5#
    • 1...Qh2
      • 2.Sxf5#
    • 1...Rxe4
      • 2.Sxe4#
    • 1...Rf7
      • 2.Re6#
    • 1...Bxd5
      • 2.Re6#
    • 1...Be6
      • 2.Rxe6#
    • 1...Bh7
      • 2.Re6#
    • 1...Sc5
      • 2.Qxb6#
  • Tries
    • 1.Qa3+?
      • 1...Qc5
        • 2.Sxf5#
      • 1...Sc5!
    • 1.Qg7?
      • threat
        • 2.Qe7#
      • 1...Rxe4
        • 2.Sxe4#
      • 1...Rf7
        • 2.Re6#
      • 1...Be6
        • 2.Rxe6#
      • 1...Bf7
        • 2.Qf8#
      • 1...Re5!
    • 1.Qb4+?
      • 1...Qc5
        • 2.Sxf5#
      • 1...Sc5
        • 2.Qxb6#
      • 1...axb4!
    • 1.Qb5?
      • threat
        • 2.Qc6#
      • 1...Be6
        • 2.Rxe6#
      • 1...Qc5
        • 2.Sxf5#
      • 1...Se5!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sb7#
      • 1...Kxc5
        • 2.Qa3#
      • 1...Qxc5
        • 2.Sxf5#
      • 1...Sxc5
        • 2.Qxb6#
      • 1...bxc5
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 14
  • Sets
    • Q(b);N_GUARD::S(C),XR(g)
    • Q(b);N_GUARD,XQ(B)::S(C),XR(g)
    • R(a);XP(D)::S(C),XR(a)
    • R(g);S_CUTB(j)::R1(I)
    • B(j);N_GUARD,P_SPINB(j),XP(E)::R1(I)
    • B(j);N_GUARD::R1(I),XB(j)
    • B(j);N_GUARD::R1(I)
    • S(c);N_GUARD,S_CUTQ(b)::QAR2(B),XP(h)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • Q(b);P_SPINQ(b)::S(C),XR(g)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • R(a);XP(D)::S(C),XR(a)
        • R(g);S_CUTB(j)::R1(I)
        • B(j);N_GUARD::R1(I),XB(j)
        • B(j);S_CUTR(g)::QAB(B)
      • Refutation
        • R(g);
    • Try
      • Q(B);CHECK
      • Vars
        • Q(b);P_SPINQ(b)::S(C),XR(g)
        • S(c);N_GUARD,P_SPINS(c),S_CUTQ(b)::QAR2(B),XP(h)
      • Refutation
        • P(f);XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • B(j);N_GUARD::R1(I),XB(j)
        • Q(b);N_GUARD::S(C),XR(g)
      • Refutation
        • S(e);
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(i);OGATEB,S_FLIGHT,XS(F)::QAB(B)
      • Q(b);N_GUARD,SBLOCK,XS(F)::S(C),XR(g)
      • S(c);N_GUARD,XS(F)::QAR2(B),XP(h)
      • P(h);OGATE,SBLOCK,XS(F)::QAB(B)
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).