MESON Chess Problem Database
Problem Display
PID: 154258 (2R4q/1p1N1b2/kP2n3/1n5r/1PQ4p/8/7b/3BR1BK w - - 0 1)
Gavrilov, Constantin Grigorievich
Tidskrift for Schack, 1909
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Ra8#
- 1...Qb2
- 2.Ra8#
- 1...Qc3
- 2.Ra8#
- 1...Qd4
- 2.Ra8#
- 1...Qe5
- 2.Ra8#
- 1...Qf6
- 2.Ra8#
- 1...Qg7
- 2.Ra8#
- 1...Qh6
- 2.Ra8#
- 1...Qh7
- 2.Ra8#
- 1...Re5
- 2.Sb8#
- 1...Bb8
- 2.Sxb8#
- 1...Be8
- 2.Ra8#
- 1...Bg8
- 2.Ra8#
- 1...Sf4
- 2.Sb8#
- 1...Sc7
- 2.Sb8#
- 1...Sd8
- 2.Ra8#
- 1...Sf8
- 2.Ra8#
- 1...Qa1
- Tries
- 1.Re2?
- threat
- 2.Ra2#
- 1...Qa1
- 2.Ra8#
- 1...Qb2
- 2.Ra8#
- 1...Qc3
- 2.Ra8#
- 1...Sc5!
- threat
- 1.Re3?
- threat
- 2.Ra3#
- 1...Qa1
- 2.Ra8#
- 1...Qb2
- 2.Ra8#
- 1...Qc3
- 2.Ra8#
- 1...Sc5!
- threat
- 1.Re2?
- Keys
- 1.Be2!
- threat
- 2.Qa2#
- 1...Qa1
- 2.Rxa1#
- 2.Ra8#
- 1...Qb2
- 2.Ra8#
- 1...Qc3
- 2.Ra8#
- 1...Sd4
- 2.Ra1#
- 1...Sf4
- 2.Sb8#
- 1...Sc5
- 2.Qxb5#
- 1...Sg5
- 2.Qxb5#
- 1...Sc7
- 2.Sb8#
- 1...Sg7
- 2.Ra1#
- 1...Sd8
- 2.Ra8#
- 1...Sf8
- 2.Ra8#
- threat
- 1.Be2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 11
- Sets
- Q(i);N_GUARD::R(I)
- Q(i);N_GUARD,SBLOCK::R(I)
- R(d);S_CUTB(a)::S(H)
- B(a);N_GUARD::S(H),XB(a)
- B(h);S_CUTQ(i)::R(I)
- S(f);S_CUTB(a)::S(H)
- S(f);S_CUTQ(i)::R(I)
- Tries
- Try
- R(B);
- Threat
- R(B)
- Vars
- Q(i);N_GUARD::R(I)
- Refutation
- S(f);
- Try
- R(B);
- Threat
- R(B)
- Vars
- Q(i);N_GUARD::R(I)
- Refutation
- S(f);
- Try
- Actual
- B(A);
- Threat
- QAR(F)
- Vars
- Q(i);N_GUARD::R(I)
- S(f);S_CUTQ(i)::R(B)
- S(f);S_CUTB(a)::S(H)
- S(f);S_CUTR(d)::QAB1(F),XS(c)
- S(f);S_CUTQ(i)::R(I)
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).