MESON Chess Problem Database
Problem Display
PID: 263096 (3n1K2/R7/4pkp1/1Q6/8/8/8/8 w - - 0 1)
Markovtsy, Vassyl Yuriovich
HM., SuperProblem, 2020
#2
3 + 4
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Sc6
- 2.Rf7#
- 1...Sf7
- 2.Rxf7#
- 1...Sc6
- Tries
- 1.Re7?
- 1...e5
- 2.Qxe5#
- 1...Sc6
- 2.Rf7#
- 1...Sb7
- 2.Rf7#
- 1...Sf7
- 2.Rxf7#
- 1...g5!
- 1...e5
- 1.Rg7?
- 1...Sc6
- 2.Rf7#
- 1...Sb7
- 2.Rf7#
- 1...Sf7
- 2.Rxf7#
- 1...g5
- 2.Qxg5#
- 1...e5!
- 1...Sc6
- 1.Rh7?
- 1...g5
- 2.Rh6#
- 1...Sc6
- 2.Rf7#
- 1...Sb7
- 2.Rf7#
- 1...Sf7
- 2.Rxf7#
- 1...e5!
- 1...g5
- 1.Re7?
- Keys
- 1.Ra5!
- threat
- 2.Qf1#
- 2.Qe5#
- 2.Qg5#
- 1...e5
- 2.Qxe5#
- 1...g5
- 2.Qxg5#
- 1...Sc6
- 2.Qf1#
- 2.Qg5#
- 1...Sf7
- 2.Qf1#
- threat
- 1.Ra5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- S(d);N_GUARD::R1(B)
- S(d);N_GUARD::R1(B),XS(d)
- Tries
- Try
- R(B);
- Vars
- P(a);::QAB1(A),XP(a)
- S(d);N_GUARD::R1(B)
- S(d);N_GUARD::R1(B),XS(d)
- Refutation
- P(c);
- Try
- R(B);
- Vars
- S(d);N_GUARD::R1(B)
- S(d);N_GUARD::R1(B),XS(d)
- P(c);::QAB1(A),XP(c)
- Refutation
- P(a);
- Try
- R(B);
- Vars
- P(c);OGATEB::R(B)
- S(d);N_GUARD::R1(B)
- S(d);N_GUARD::R1(B),XS(d)
- Refutation
- P(a);
- Try
- Actual
- R(B);
- Threat
- DUALS(3)
- Vars
- P(a);::QAB1(A),XP(a)
- P(c);::QAB1(A),XP(c)
- S(d);::QAR(A)
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).