MESON Chess Problem Database
Problem Display
PID: 246635 (1R2K3/p6p/2k3n1/1N4Rp/r2p4/B3N1p1/Bn1pQ3/2r1b2b w - - 0 1)
Ellerman, Arnoldo
El Ajedrez Espanol, 1947
#2
8 + 13
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rc5#
- 1...Rb1
- 2.Rc5#
- 1...Rd1
- 2.Rc5#
- 1...Rc5
- 2.Rxc5#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Qxf3#
- 1...Bd5
- 2.Bxd5#
- 1...Sc4
- 2.Rc5#
- 1...g2
- 2.Bd5#
- 2.Qf3#
- 1...h6
- 2.Rxg6#
- 1...Ra1
- Tries
- 1.Sc2?
- threat
- 2.Rc5#
- 2.Qe6#
- 1...Rxc2
- 2.Qe6#
- 1...Rxa3
- 2.Sb4#
- 2.Scxd4#
- 2.Qe6#
- 1...Sf4
- 2.Rc5#
- 1...Rb4
- 2.Sxb4#
- 2.Qe6#
- 1...Rc4
- 2.Qe6#
- 1...Be4
- 2.Rc5#
- 2.Qxe4#
- 1...Bd5
- 2.Bxd5#
- 1...Sd3
- 2.Qe6#
- 1...Sc4
- 2.Scxd4#
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...Se5!
- threat
- 1.Sg2?
- threat
- 2.Bd5#
- 2.Qf3#
- 2.Qe4#
- 2.Qe6#
- 1...Rxa3
- 2.Qe4#
- 2.Qe6#
- 1...Bxg2
- 2.Qxg2#
- 2.Qe6#
- 1...d1Q
- 2.Bd5#
- 2.Qe4#
- 2.Qe6#
- 1...d1B
- 2.Bd5#
- 2.Qe4#
- 2.Qe6#
- 1...Se5
- 2.Qe4#
- 1...Rc3
- 2.Bd5#
- 2.Qe4#
- 2.Qe6#
- 1...Rcc4
- 2.Qf3#
- 2.Qe4#
- 2.Qe6#
- 1...Rc5
- 2.Rxc5#
- 2.Qe6#
- 1...Rb4
- 2.Qf3#
- 2.Qe4#
- 2.Qe6#
- 1...Rac4
- 2.Qf3#
- 2.Qe4#
- 2.Qe6#
- 1...Sc4
- 2.Rc5#
- 2.Qf3#
- 2.Qe4#
- 1...Sh4
- 2.Bd5#
- 2.Qe4#
- 2.Qe6#
- 1...Se7
- 2.Qe6#
- 1...Sf8
- 2.Bd5#
- 2.Qf3#
- 2.Qe4#
- 1...d3
- 2.Bd5#
- 2.Qe6#
- 1...Sf4!
- threat
- 1.Sc4?
- threat
- 2.Rc5#
- 2.Qe6#
- 1...Rcxc4
- 2.Qe6#
- 1...Rxa3
- 2.Qe6#
- 1...Raxc4
- 2.Qe6#
- 1...Sxc4
- 2.Rc5#
- 1...Se5
- 2.Sxe5#
- 1...Sf4
- 2.Se5#
- 2.Rc5#
- 1...Rb4
- 2.Sa5#
- 2.Qe6#
- 1...Be4
- 2.Rc5#
- 2.Qxe4#
- 1...Sd3
- 2.Qe6#
- 1...Sf8
- 2.Se5#
- 2.Rc5#
- 1...Bd5!
- threat
- 1.Sd5?
- threat
- 2.Qe6#
- 1...Rxa3
- 2.Sb4#
- 1...Bxd5
- 2.Bxd5#
- 1...Rb4
- 2.Sxb4#
- 1...Sf4
- 2.Se7#
- 1...Sc4
- 2.Sxd4#
- 1...Se5
- 2.Se7#
- 1...Sf8
- 2.Se7#
- 1...Be4!
- threat
- 1.Qg4?
- threat
- 2.Qe6#
- 2.Qd7#
- 2.Qc8#
- 1...Sf4
- 2.Qd7#
- 2.Qc8#
- 1...Bd5
- 2.Bxd5#
- 2.Qd7#
- 2.Qc8#
- 1...Sc4
- 2.Rc5#
- 2.Qd7#
- 2.Qc8#
- 1...Se5
- 2.Qe6#
- 2.Qc8#
- 1...Se7
- 2.Qe6#
- 2.Qd7#
- 1...Sf8
- 2.Qc8#
- 1...hxg4!
- threat
- 1.Sc2?
- Keys
- 1.Sg4!
- threat
- 2.Qe6#
- 1...Sf4
- 2.Se5#
- 1...Be4
- 2.Qxe4#
- 1...Bd5
- 2.Bxd5#
- 1...Sc4
- 2.Rc5#
- 1...Se5
- 2.Sxe5#
- 1...Sf8
- 2.Se5#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD::R1(F)
- R(a);N_GUARD::R1(F),XR(a)
- B(c);N_GUARD::QAB(B),XB(c)
- B(c);N_GUARD::B(A),XB(c)
- S(d);S_CUTR(a)::R1(F)
- P(m);N_GUARD::R(F),XS(k)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(a);XS(D)::QAR2(B)
- S(k);::R1(F)
- R(g);::QAR2(B)
- B(c);N_GUARD::B(A),XB(c)
- S(d);::QAR2(B)
- Refutation
- S(k);
- Try
- S(D);
- Threat
- DUALS(4)
- Vars
- S(k);::QAB(B)
- S(k);::QAR2(B)
- Refutation
- S(k);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(a);XS(D)::QAR2(B)
- R(g);XB(C)::QAR2(B)
- R(g);XS(D)::QAR2(B)
- S(d);XS(D)::R1(F)
- S(k);N_GUARD::S(D),XS(k)
- S(d);::QAR2(B)
- Refutation
- B(c);
- Try
- S(D);
- Threat
- QAR2(B)
- Vars
- R(g);N_GUARD,XB(C)::S(D)
- B(c);OGATE,XS(D)::B(A),XB(c)
- R(g);N_GUARD::S(D),XR(g)
- S(k);N_GUARD::S(D)
- S(d);S_CUTR(g)::S(E),XP(h)
- Refutation
- B(c);
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(k);::QAR2(B)
- Refutation
- P(i);XQ(B)
- Try
- Actual
- S(D);
- Threat
- QAR2(B)
- Vars
- S(k);N_GUARD::S(D)
- B(c);N_GUARD::QAB(B),XB(c)
- B(c);N_GUARD::B(A),XB(c)
- S(d);S_CUTR(a)::R1(F)
- S(k);N_GUARD::S(D),XS(k)
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).