MESON Chess Problem Database
Problem Display
PID: 201382 (7n/2b2p2/3P3R/r4kpp/8/4R2P/p4pN1/KbQ5 w - - 0 1)
Behting, Karl Karlovich
L'Alfiere di Re, 1922
#2
7 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Qc5#
- 1...Ra4
- 2.Qc5#
- 1...Rc5
- 2.Qxc5#
- 1...Ra6
- 2.Qc5#
- 1...Ra7
- 2.Qc5#
- 1...Ra8
- 2.Qc5#
- 1...Bc2
- 2.Qxc2#
- 1...Bb6
- 2.Qc8#
- 1...Bxd6
- 2.Qc8#
- 1...Bb8
- 2.Qc8#
- 1...Bd8
- 2.Qc8#
- 1...f1Q
- 2.Qxf1#
- 1...f1S
- 2.Qxf1#
- 1...f1B
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...Ra3
- Tries
- 1.Qb2?
- threat
- 2.Rf6#
- 2.Qf6#
- 2.Qxf2#
- 1...Bxd6
- 2.Rf6#
- 2.Qf6#
- 1...g4
- 2.Qf6#
- 1...f1Q
- 2.Rf6#
- 2.Qf6#
- 1...f1S
- 2.Rf6#
- 2.Qf6#
- 2.Qf2#
- 1...f1B
- 2.Rf6#
- 2.Qf6#
- 2.Qf2#
- 1...f1R
- 2.Rf6#
- 2.Qf6#
- 1...Ra4
- 2.Re5#
- 2.Rf6#
- 2.Qe5#
- 2.Qf6#
- 2.Qb5#
- 1...Re5
- 2.Rxe5#
- 2.Qxe5#
- 2.Qxf2#
- 1...Bc2
- 2.Rf6#
- 2.Qf6#
- 2.Qxc2#
- 1...Be4
- 2.Rf6#
- 2.Qf6#
- 1...Bd8
- 2.Qxf2#
- 1...f6
- 2.Rxf6#
- 2.Qxf6#
- 2.Qxf2#
- 1...Sg6!
- threat
- 1.Qc3?
- threat
- 2.Rf6#
- 2.Qf6#
- 1...g4
- 2.Qf6#
- 1...Re5
- 2.Rxe5#
- 2.Qxe5#
- 1...Bd8
- 2.Qc8#
- 1...f6
- 2.Rxf6#
- 2.Qxf6#
- 1...Sg6!
- threat
- 1.Qb2?
- Keys
- 1.Qc4!
- 1...Bxd6
- 2.Qc8#
- 1...Be4
- 2.Qxe4#
- 1...Sg6
- 2.Qxf7#
- 1...g4
- 2.Qf4#
- 1...f1Q
- 2.Qxf1#
- 1...f1S
- 2.Qxf1#
- 1...f1B
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...Ra3
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...Ra4
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...Rb5
- 2.Qxb5#
- 1...Rc5
- 2.Qxc5#
- 1...Rd5
- 2.Qxd5#
- 1...Re5
- 2.Rf3#
- 1...Ra6
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...Ra7
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...Ra8
- 2.Qb5#
- 2.Qd5#
- 2.Qc5#
- 1...Bc2
- 2.Qxc2#
- 1...Bd3
- 2.Qxd3#
- 1...Bb6
- 2.Qc8#
- 1...Bb8
- 2.Qc8#
- 1...Bd8
- 2.Qc8#
- 1...h4
- 2.Qg4#
- 1...f6
- 2.Qe6#
- 1...Bxd6
- 1.Qc4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 5
- Sets
- R(d);N_GUARD::QAR(B)
- R(d);N_GUARD::QAR(B),XR(d)
- B(a);N_GUARD::QAB(B),XB(a)
- B(h);OGATE::QAB(B)
- B(h);OGATE,XP(F)::QAB(B)
- P(c);OGATEB::QAR(B),XQ(c)
- P(c);OGATEB::QAR(B),XS(c)
- P(c);OGATEB::QAR(B),XB(c)
- P(c);OGATEB::QAR(B),XR(c)
- Tries
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- P(f);::QAR1(B)
- B(h);::QAR(B),XP(c)
- Refutation
- S(j);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- P(f);::QAR1(B)
- B(h);OGATE::QAB(B)
- Refutation
- S(j);
- Try
- Actual
- Q(B);
- Vars
- B(h);OGATE,XP(F)::QAB(B)
- B(a);N_GUARD::QAB1(B),XB(a)
- S(j);N_GUARD::QAR2(B),XP(i)
- P(f);N_GUARD::QAR1(B)
- P(c);OGATEB::QAR(B),XQ(c)
- P(c);OGATEB::QAR(B),XS(c)
- P(c);OGATEB::QAR(B),XB(c)
- P(c);OGATEB::QAR(B),XR(c)
- R(d);N_GUARD::QAR(B),XR(d)
- R(d);N_GUARD::QAR2(B),XR(d)
- R(d);SBLOCK::R(D)
- B(a);N_GUARD::QAB(B),XB(a)
- B(h);OGATE::QAB(B)
- P(g);N_GUARD::QAB1(B)
- P(i);N_GUARD::QAB1(B)
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).