MESON Chess Problem Database
Problem Display
PID: 67311 (bK4n1/5p2/3Rp1RB/4pk1p/4N2p/8/6Q1/2b5 w - - 0 1)
Smits, Gerhardus Johannes Gerard
4th Prize, Probleemblad, 1980
#2
6 + 9
SOLUTION
- SOUND
- Sets
- 1...Sf6
- 2.Rxf6#
- 1...Sxh6
- 2.Rf6#
- 1...Se7
- 2.Rf6#
- 1...Sf6
- Tries
- 1.Bxc1?
- threat
- 2.Rg5#
- 1...Bxe4
- 2.Qg5#
- 1...fxg6
- 2.Qf3#
- 1...f6!
- threat
- 1.Rd4?
- threat
- 2.Sd6#
- 1...Bxe4
- 2.Qxe4#
- 1...fxg6
- 2.Qh3#
- 1...Bg5
- 2.Qxg5#
- 1...Ba3
- 2.Qg5#
- 1...exd4!
- threat
- 1.Qf3+?
- 1...Bf4
- 2.Rg5#
- 1...Kxg6!
- 1...Bf4
- 1.Qh3+?
- 1...Kxe4
- 2.Qd3#
- 1...Kxg6!
- 1...Kxe4
- 1.Bxc1?
- Keys
- 1.Rd2!
- threat
- 2.Sd6#
- 1...Bxe4
- 2.Qg5#
- 1...Sxh6
- 2.Rf6#
- 1...fxg6
- 2.Qf3#
- 1...Ba3
- 2.Rf2#
- threat
- 1.Rd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- S(i);N_GUARD::R1(D),XS(i)
- S(i);N_GUARD,XB(E)::R1(D)
- S(i);N_GUARD::R1(D)
- Tries
- Try
- B(E);XB(a)
- Threat
- R1(D)
- Vars
- B(h);SBLOCK,XS(B)::QAR1(A)
- P(g);SBLOCK,XR(D)::QAR2(A)
- Refutation
- P(g);
- Try
- R(C);
- Threat
- S(B)
- Vars
- B(h);OGATE,XS(B)::QAB1(A),XB(h)
- P(g);SBLOCK,XR(D)::QAB(A)
- B(a);N_GUARD::QAR1(A),XB(a)
- B(a);N_GUARD::QAR1(A)
- Refutation
- P(c);XR(C)
- Try
- Q(A);CHECK
- Vars
- B(a);P_SPINB(a)::R1(D)
- Refutation
- K(d);P_SPINP(f),S_FLIGHT,XR(D)
- Try
- Q(A);CHECK
- Vars
- K(d);OGATEB,S_FLIGHT,XS(B)::QAB1(A)
- Refutation
- K(d);P_SPINP(f),S_FLIGHT,XR(D)
- Try
- Actual
- R(C);
- Threat
- S(B)
- Vars
- B(h);SBLOCK,XS(B)::QAR1(A)
- S(i);N_GUARD,XB(E)::R1(D)
- P(g);SBLOCK,XR(D)::QAR2(A)
- B(a);N_GUARD::R(C)
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).