MESON Chess Problem Database

Problem Display
PID: 72772 (1r1r4/4q3/6b1/Q1N2pP1/N2kPR2/Kp6/n2B4/3R1Bb1 w - - 0 1)

Fuhrer, Viktor

Erfurter Tribune, 1932

1r1r4/4q3/6b1/Q1N2pP1/N2kPR2/Kp6/n2B4/3R1Bb1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5+
      • 2.Qxc5#
    • 1...Qxg5
      • 2.Se6#
    • 1...Qxe4
      • 2.Se6#
    • 1...Qe5
      • 2.Bc1#
    • 1...Qe6
      • 2.Sxe6#
    • 1...Qa7
      • 2.Se6#
    • 1...Qb7
      • 2.Se6#
    • 1...Qc7
      • 2.Se6#
    • 1...Qg7
      • 2.Se6#
    • 1...Qh7
      • 2.Se6#
    • 1...Be3
      • 2.Bc3#
    • 1...Sc1
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sb4
      • 2.Sxb3#
  • Tries
    • 1.Rf3?
      • threat
        • 2.Bc3#
        • 2.Bf4#
      • 1...Ke5
        • 2.Bf4#
      • 1...Qxe4
        • 2.Bc3#
      • 1...Be3
        • 2.Bc3#
      • 1...Sc1
        • 2.Bc3#
        • 2.Qc3#
      • 1...Sc3
        • 2.Bxc3#
        • 2.Qxc3#
      • 1...Sb4
        • 2.Bc3#
      • 1...f4
        • 2.Bc3#
        • 2.Bxf4#
      • 1...Qxc5+!
    • 1.Rh4?
      • threat
        • 2.Bf4#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...Ke5
        • 2.Bf4#
      • 1...Qxe4
        • 2.Se6#
      • 1...Be3
        • 2.Bc3#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb4
        • 2.Sxb3#
      • 1...f4
        • 2.Bxf4#
      • 1...Bh5!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Bf4#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...Ke5
        • 2.Bf4#
      • 1...Qxe4
        • 2.Se6#
      • 1...Be3
        • 2.Bc3#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb4
        • 2.Sxb3#
      • 1...f4
        • 2.Bxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(g);CHECK,OGATE,XS(I)::QAB1(H),XQ(g)
    • Q(g);N_PINS(I),XP(J)::S(I)
    • Q(g);N_PINS(I),P_SPINQ(g),XP(F)::S(I)
    • Q(g);N_PINS(I),SBLOCK::R(A)+B(C)
    • Q(g);N_PINS(I)::S(I),XQ(g)
    • Q(g);N_PINS(I)::S(I)
    • B(a);SBLOCK::R(A)+B(C),DCHECK
    • S(b);N_GUARD::QAB1(H)
    • S(b);N_GUARD::QAB1(H),XS(b)
    • S(b);N_PINS(I)::S(I),XP(c)
  • Tries
    • Try
      • R(G);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT::B(C)
        • Q(g);N_PINS(I),XP(F)::R(A)+B(C),DCHECK
        • B(a);::R(A)+B(C),DCHECK
        • S(b);N_PINS(I)::R(A)+B(C),DCHECK
      • Refutation
        • Q(g);CHECK,XS(I)
    • Try
      • R(G);
      • Threat
        • R(A)+B(C)
      • Vars
        • Q(g);CHECK,OGATE,XS(I)::QAB1(H),XQ(g)
        • K(d);S_FLIGHT::B(C)
        • Q(g);N_PINS(I),P_SPINQ(g),XP(F)::S(I)
        • B(a);SBLOCK::R(A)+B(C),DCHECK
        • S(b);N_GUARD::QAB1(H)
        • S(b);N_GUARD::QAB1(H),XS(b)
        • S(b);N_PINS(I)::S(I),XP(c)
        • P(e);::R(A)+B(C),XP(e)
      • Refutation
        • B(f);
  • Actual
    • R(G);
    • Threat
      • R(A)+B(C)
    • Vars
      • Q(g);CHECK,OGATE,XS(I)::QAB1(H),XQ(g)
      • K(d);S_FLIGHT::B(C)
      • Q(g);N_PINS(I),P_SPINQ(g),XP(F)::S(I)
      • B(a);SBLOCK::R(A)+B(C),DCHECK
      • S(b);N_GUARD::QAB1(H)
      • S(b);N_GUARD::QAB1(H),XS(b)
      • S(b);N_PINS(I)::S(I),XP(c)
      • P(e);::R(A)+B(C),XP(e)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).