MESON Chess Problem Database
Problem Display
PID: 206964 (K2B4/1R6/k1p5/7r/7p/b3n3/N1p5/6Q1 w - - 0 1)
Kaila, Osmo
Il Problema, 1934
#2
5 + 7
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Rb6#
- 1...Rb5
- 2.Ra7#
- 1...Bc1
- 2.Sb4#
- 1...Bb2
- 2.Sb4#
- 1...Bb4
- 2.Sxb4#
- 1...Sd1
- 2.Qb6#
- 2.Qa7#
- 1...Sf1
- 2.Qb6#
- 2.Qa7#
- 1...Sg2
- 2.Qb6#
- 2.Qa7#
- 1...Sc4
- 2.Qa7#
- 1...Sg4
- 2.Qb6#
- 2.Qa7#
- 1...Sd5
- 2.Qa7#
- 2.Qf1#
- 1...Sf5
- 2.Qb6#
- 2.Qa7#
- 2.Qf1#
- 1...c5
- 2.Qg6#
- 1...Ra5
- Tries
- 1.Qxe3?
- threat
- 2.Qb6#
- 2.Qa7#
- 1...Rb5
- 2.Ra7#
- 2.Qa7#
- 1...Bc5
- 2.Qe2#
- 2.Qd3#
- 1...c5
- 2.Qxa3#
- 2.Qe6#
- 1...Rc5!
- threat
- 1.Qe1?
- threat
- 2.Rb6#
- 1...Rb5
- 2.Ra7#
- 1...Bb4
- 2.Sxb4#
- 1...Bc5
- 2.Qa5#
- 1...Sd5
- 2.Qa5#
- 2.Qf1#
- 2.Qe2#
- 1...Sc4!
- threat
- 1.Qxe3?
- Keys
- 1.Qa1!
- threat
- 2.Sb4#
- 1...Ra5
- 2.Rb6#
- 1...Rb5
- 2.Ra7#
- 1...Bb4
- 2.Sxb4#
- 1...Sd5
- 2.Qf1#
- 1...c5
- 2.Qf6#
- threat
- 1.Qa1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- R(e);SBLOCK::R1(C)
- B(b);N_GUARD::S(B)
- B(b);N_GUARD::S(B),XB(b)
- S(c);OGATE::QAR1(A)
- P(g);OGATEB::QAR(A)
- Tries
- Try
- Q(A);XS(c)
- Threat
- DUALS(2)
- Refutation
- R(e);
- Try
- Q(A);
- Threat
- R1(C)
- Vars
- R(e);SBLOCK::R1(C)
- B(b);N_GUARD::S(B),XB(b)
- B(b);S_CUTR(e)::QAR1(A)
- Refutation
- S(c);
- Try
- Actual
- Q(A);
- Threat
- S(B)
- Vars
- R(e);SBLOCK::R1(C)
- B(b);::QAR(A)+S(B),DCHECK,XB(b)
- S(c);N_GUARD,S_CUTR(e)::QAB(A)
- P(g);OGATEB::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).