MESON Chess Problem Database
Problem Display
PID: 266208 (2q4N/b2r3p/6Pk/5P1N/7P/rn2R2K/Q3B3/2B5 w - - 0 1)
Hartong, Jan
Schakend Nederland, 1978
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Sf7#
- 1...Rd2
- 2.Sf7#
- 1...Rd3
- 2.Sf7#
- 1...Rd4
- 2.Sf7#
- 1...Rd5
- 2.Sf7#
- 1...Rd6
- 2.Sf7#
- 1...Rf7
- 2.Sxf7#
- 1...Rd8
- 2.Sf7#
- 1...Bxe3
- 2.Bxe3#
- 1...Sd4
- 2.Rc3#
- 1...Sc5
- 2.Rd3#
- 1...Rd1
- Tries
- 1.Rxb3+?
- 1...Rd2
- 2.Sf7#
- 1...Be3
- 2.Bxe3#
- 1...Qxc1!
- 1...Rd2
- 1.Rxb3+?
- Keys
- 1.g7!
- threat
- 2.Re6#
- 1...Bxe3
- 2.Bxe3#
- 1...Sxc1
- 2.Qe6#
- 1...Qc3
- 2.g8S#
- 1...Rd2
- 2.Sf7#
- 1...Rd3
- 2.Sf7#
- 1...Sa1
- 2.Qe6#
- 1...Sd2
- 2.Qe6#
- 1...Sd4
- 2.Rc3#
- 1...Sa5
- 2.Qe6#
- 1...Sc5
- 2.Rd3#
- threat
- 1.g7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 6
- Sets
- R(e);N_GUARD,P_PINP(G)::S(J)
- R(e);N_GUARD,P_PINP(G),P_PINR(D)::S(J)
- R(e);N_GUARD,P_PINP(G)::S(J),XR(e)
- B(d);OGATE,P_SPINB(d),XR(D)::B(A),XB(d)
- S(b);N_GUARD,P_PINR(D),S_CUTB(d),S_CUTR(e)::B(A)+R(D)
- S(b);N_GUARD,P_PINR(D),S_CUTB(d),S_CUTQ(g)::B(A)+R(D)
- Tries
- Try
- R(D);CHECK,P_SPINR(D),XS(b)
- Vars
- R(e);P_PINP(G),P_SPINR(e)::S(J)
- B(d);N_GUARD,N_PINR(D),P_SPINB(d)::B(A),XB(d)
- Refutation
- Q(g);XB(A)
- Try
- Actual
- P(I);
- Threat
- B(A)+R(D),DCHECK
- Vars
- B(d);OGATE,P_SPINB(d),XR(D)::B(A),XB(d)
- S(b);OGATE,P_PINR(D),XB(A)::QAR(B)
- Q(g);N_GUARD,P_PINR(D)::P=S
- R(e);N_GUARD,P_PINP(G)::S(J)
- R(e);N_GUARD,P_PINP(G),P_PINR(D)::S(J)
- S(b);OGATE,P_PINR(D)::QAR(B)
- S(b);N_GUARD,P_PINR(D),S_CUTB(d),S_CUTR(e)::B(A)+R(D)
- S(b);N_GUARD,P_PINR(D),S_CUTB(d),S_CUTQ(g)::B(A)+R(D)
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).