MESON Chess Problem Database

Problem Display
PID: 173505 (K7/8/pR1P2p1/3Q3B/4Pk1P/n5p1/r2P2RP/1bNNq1rn w - - 0 1)

Lind, Ingemar

Uppstrom, Rolf

10. WCCT, 2016-2017

K7/8/pR1P2p1/3Q3B/4Pk1P/n5p1/r2P2RP/1bNNq1rn

#2

12 + 10

114 Springaren 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Sxe2#
    • 1...Qe3
      • 2.dxe3#
    • 1...Rc2
      • 2.Sd3#
    • 1...Bd3
      • 2.Sxd3#
    • 1...Sf2
      • 2.hxg3#
    • 1...Sc2
      • 2.Sd3#
    • 1...gxh5
      • 2.Qf5#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Re2?
      • threat
        • 2.Qg5#
      • 1...Qxe2
        • 2.Sxe2#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...gxh5
        • 2.Qf5#
      • 1...g5
        • 2.Qf5#
        • 2.Qxg5#
      • 1...gxh2!
    • 1.Rb4?
      • threat
        • 2.Qg5#
      • 1...Qxe4
        • 2.Se2#
      • 1...Bxe4
        • 2.Sd3#
      • 1...gxh5
        • 2.Qf5#
      • 1...g5
        • 2.Qf5#
        • 2.Qxg5#
      • 1...Sc4!
    • 1.d3?
      • threat
        • 2.Qg5#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Bxd3
        • 2.Sxd3#
      • 1...gxh5
        • 2.Qf5#
      • 1...g5
        • 2.Qf5#
        • 2.Qxg5#
      • 1...Qa5!
    • 1.hxg3+?
      • 1...Qxg3
        • 2.Se2#
      • 1...Sxg3!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Rf7#
      • 1...Qxe4
        • 2.Qg5#
      • 1...Bxe4
        • 2.Qg5#
      • 1...gxh5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::S(A),XQ(b)
    • Q(b);OGATE::P(C),XQ(b)
    • R(e);S_CUTB(a)::S(A)
    • B(a);N_GUARD::S(A),XB(a)
    • S(d);N_GUARD,S_CUTQ(b)::P(E),XP(g)
    • S(f);S_CUTB(a)::S(A)
    • P(j);N_GUARD,XB(I)::QAR1(H)
    • P(j);N_GUARD::QAR1(H)
  • Tries
    • Try
      • R(D);
      • Threat
        • QAB1(H)
      • Vars
        • Q(b);XR(D)::S(A),XQ(b)
        • B(a);OGATE,P_PINQ(H),XP(F)::QAR1(H),XB(a)
        • P(j);N_GUARD,XB(I)::QAR1(H)
      • Refutation
        • P(g);XP(E)
    • Try
      • R(J);
      • Threat
        • QAB1(H)
      • Vars
        • Q(b);N_GUARD,P_PINQ(H),P_SPINQ(b),XP(F)::S(A)
        • B(a);N_GUARD,P_PINQ(H),P_SPINB(a),XP(F)::S(A)
        • P(j);N_GUARD,XB(I)::QAR1(H)
      • Refutation
        • S(f);
    • Try
      • P(C);
      • Threat
        • QAB1(H)
      • Vars
        • Q(b);OGATE,P_PINQ(H),XP(F)::QAR1(H),XQ(b)
        • B(a);XP(C)::S(A),XB(a)
        • P(j);N_GUARD,XB(I)::QAR1(H)
      • Refutation
        • Q(b);
    • Try
      • P(E);CHECK,XP(g)
      • Vars
        • Q(b);XP(E)::S(A)
      • Refutation
        • S(d);XP(E)
  • Actual
    • R(J);
    • Threat
      • R(J)
    • Vars
      • Q(b);SBLOCK,XP(F)::QAB1(H)
      • B(a);SBLOCK,XP(F)::QAB1(H)
      • P(j);N_GUARD,XB(I)::QAR1(H)
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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).