MESON Chess Problem Database
Problem Display
PID: 233867 (Kn1r4/3nQ3/pbp1pp1q/p5r1/PPk5/1N1R3p/3BP1N1/7b w - - 0 1)
Ellerman, Arnoldo
Skakbladet, 1947
#2
9 + 14
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxg2
- 2.Qxe6#
- 1...Rg3
- 2.Qxe6#
- 1...Rg4
- 2.Qxe6#
- 1...Rd5
- 2.Rc3#
- 1...Rg6
- 2.Qxe6#
- 1...Rg7
- 2.Qxe6#
- 1...Rgg8
- 2.Qxe6#
- 1...Be3
- 2.Sxe3#
- 1...Bc5
- 2.Sxa5#
- 1...Bc7
- 2.Se3#
- 1...Sc5
- 2.Se3#
- 1...axb4
- 2.Qxb4#
- 1...e5
- 2.Qe6#
- 2.Qf7#
- 1...Rxg2
- Tries
- 1.Sxa5+?
- 1...Bxa5
- 2.Se3#
- 1...Rxa5!
- 1...Bxa5
- 1.Qc5+?
- 1...Bxc5
- 2.Sxa5#
- 1...Sxc5
- 2.Se3#
- 1...Rxc5!
- 1...Bxc5
- 1.Sxa5+?
- Keys
- 1.Qd6!
- threat
- 2.Rc3#
- 1...axb4
- 2.Qxb4#
- 1...Rg3
- 2.Qxe6#
- 1...Rc5
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Bc5
- 2.Sxa5#
- 1...Sc5
- 2.Se3#
- 1...c5
- 2.Qf4#
- threat
- 1.Qd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- R(e);N_GUARD,XS(C)::QAB(H),XP(i)
- R(e);N_GUARD::QAB(H),XP(i)
- R(e);SBLOCK::R1(E)
- B(g);N_GUARD::S(C),XB(g)
- B(g);N_GUARD,S_CUTR(e)::S(D),XP(d)
- B(g);N_GUARD::S(C)
- S(l);S_CUTB(g)::S(C)
- P(d);OGATE,XP(G)::QAR1(H),XP(d)
- Tries
- Try
- S(D);CHECK,XP(d)
- Vars
- B(g);XS(D)::S(C)
- Refutation
- R(e);XS(D)
- Try
- Q(H);CHECK
- Vars
- B(g);XQ(H)::S(D),XP(d)
- S(l);XQ(H)::S(C)
- Refutation
- R(e);XQ(H)
- Try
- Actual
- Q(H);
- Threat
- R1(E)
- Vars
- P(d);OGATE,XP(G)::QAR1(H),XP(d)
- R(e);N_GUARD::QAB(H),XP(i)
- R(e);S_CUTB(g)::QAR1(H)
- B(g);N_GUARD::QAR1(H),XB(g)
- B(g);N_GUARD,S_CUTR(e)::S(D),XP(d)
- S(l);S_CUTB(g)::S(C)
- P(h);P_PINS(C),S_CUTB(g)::QAR(H)
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).