MESON Chess Problem Database
Problem Display
PID: 9589 (8/4Q3/8/3P1p2/1Bb2pp1/3P3N/3qP1P1/KR1nkB1R w - - 0 1)
van Dijk, Johannes
1st HM., Hampstead and Highgate Express, 1906
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Qc3+
- 2.Bxc3#
- 1...Qxb4
- 2.Qxb4#
- 1...Bxd3
- 2.exd3#
- 1...f3
- 2.exf3#
- 1...gxh3
- 2.Qh4#
- 1...Qc3+
- Tries
- 1.g3?
- threat
- 2.Bg2#
- 1...Qc3+
- 2.Bxc3#
- 1...Qxb4
- 2.Qxb4#
- 1...gxh3!
- threat
- 1.dxc4?
- 1...Qc3+
- 2.Bxc3#
- 1...Qxb4
- 2.Qxb4#
- 1...gxh3
- 2.Qh4#
- 1...f3
- 2.exf3#
- 1...g3!
- 1...Qc3+
- 1.g3?
- Keys
- 1.e4!
- threat
- 2.exf5#
- 1...Qc3+
- 2.Bxc3#
- 1...Qxb4
- 2.Qxb4#
- 1...Bxd3
- 2.Bxd3#
- 1...Bxd5
- 2.exd5#
- 1...gxh3
- 2.Qh4#
- 1...fxe4
- 2.Qxe4#
- 1...fxe4 ep
- 2.Qxe3#
- threat
- 1.e4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- Q(c);CHECK,OGATEB::B(I),XQ(c)
- Q(c);N_SPINQ(c),OGATE,XB(I)::QAB(K),XQ(c)
- B(d);OGATE,XP(G)::QAR(K)+P(E),XB(d)
- P(e);OGATE::QAR(K)+P(E),XP(e)
- P(f);N_GUARD,XS(H)::QAB(K)
- Tries
- Try
- P(F);
- Threat
- R(D)+B(C)
- Vars
- Q(c);CHECK,OGATEB::B(I),XQ(c)
- Q(c);N_SPINQ(c),OGATE,XB(I)::QAB(K),XQ(c)
- Refutation
- P(f);XS(H)
- Try
- P(G);XB(d)
- Vars
- Q(c);CHECK,OGATEB::B(I),XQ(c)
- Q(c);N_SPINQ(c),OGATE,XB(I)::QAB(K),XQ(c)
- P(f);N_GUARD,XS(H)::QAB(K)
- P(e);OGATE::QAR(K)+P(E),XP(e)
- Refutation
- P(f);
- Try
- Actual
- P(E);
- Threat
- QAR(K)+P(E),XP(g)
- Vars
- Q(c);CHECK,OGATEB::B(I),XQ(c)
- Q(c);N_SPINQ(c),OGATE,XB(I)::QAB(K),XQ(c)
- B(d);OGATE,XP(G)::R(D)+B(C),XB(d)
- B(d);OGATE,XP(J)::QAR(K)+P(E),XB(d)
- P(f);N_GUARD,XS(H)::QAB(K)
- P(g);OGATE,P_SPINP(g),XP(E)::QAR(K),XP(g)
- P(e);EP,OGATE,P_SPINP(e),XP(E)::QAR2(K),XP(e)
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).