MESON Chess Problem Database
Problem Display
PID: 215975 (3kn1Q1/Np1p3R/1r3p2/N3B3/8/8/4R2K/3n4 w - - 0 1)
Ellerman, Arnoldo
Suomen Shakki, 1951
#2
7 + 7
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ra6
- 2.Sxb7#
- 1...Rc6
- 2.Sxb7#
- 1...Re6
- 2.Sxb7#
- 1...d5
- 2.Bc7#
- 1...d6
- 2.Bxf6#
- 1...Ra6
- Tries
- 1.Bb8?
- threat
- 2.Rxe8#
- 2.Qxe8#
- 1...Rb2
- 2.Qxe8#
- 1...Re6
- 2.Sxb7#
- 1...Se3!
- threat
- 1.Rc2?
- threat
- 2.Bc7#
- 2.Rc8#
- 1...fxe5
- 2.Rc8#
- 1...Rb2
- 2.Bxf6#
- 2.Bc7#
- 1...Rc6
- 2.Sxb7#
- 1...Rd6
- 2.Sxb7#
- 2.Rc8#
- 1...d6
- 2.Bxf6#
- 2.Rc8#
- 1...Sc3!
- threat
- 1.Rd2?
- threat
- 2.Rdxd7#
- 2.Rhxd7#
- 1...Rb2
- 2.Rxd7#
- 1...d5
- 2.Bc7#
- 1...d6
- 2.Bxf6#
- 1...Rd6!
- threat
- 1.Bb8?
- Keys
- 1.Qc4!
- threat
- 2.Qc8#
- 1...Sd6
- 2.Bxf6#
- 1...Sc7
- 2.Bxc7#
- 1...Sg7
- 2.Bc7#
- 1...Rc6
- 2.Sxb7#
- threat
- 1.Qc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- R(b);N_GUARD::S(C),XP(d)
- P(e);::B(D)
- P(e);S_CUTR(b)::B(D),XP(c)
- Tries
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(b);P_PINR(A)::QAR1(G),XS(g)
- R(b);N_GUARD::S(C),XP(d)
- Refutation
- S(a);
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- P(c);XB(D)::R1(A)
- R(b);N_GUARD::S(C),XP(d)
- Refutation
- S(a);
- Try
- R(A);P_PINP(e)
- Threat
- DUALS(2)
- Vars
- R(b);P_PINR(A)::R1(F),XP(e)
- P(e);::B(D)
- P(e);S_CUTR(b)::B(D),XP(c)
- Refutation
- R(b);N_SPINP(e)
- Try
- Actual
- Q(G);N_PINS(g)
- Threat
- QAR1(G)
- Vars
- S(g);N_GUARD,S_CUTR(b)::B(D),XP(c)
- S(g);N_GUARD::B(D),XS(g)
- S(g);N_GUARD::B(D)
- R(b);N_GUARD::S(C),XP(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).