MESON Chess Problem Database
Problem Display
PID: 246349 (4N3/B1n2Qb1/4P3/K2pk2r/R3Pp1p/NB4pp/2bR1n2/2r5 w - - 0 1)
Ellerman, Arnoldo
Europe Echecs, 1961
#2
10 + 12
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rf5
- 2.Qxf5#
- 1...Rh6
- 2.Qf5#
- 1...Rh7
- 2.Qf5#
- 1...Rh8
- 2.Qf5#
- 1...Bxe4
- 2.Bd4#
- 1...Bf6
- 2.Qxf6#
- 1...Bh6
- 2.Qf6#
- 1...Bf8
- 2.Qf6#
- 1...Sxe4
- 2.Bd4#
- 1...Sb5
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sxe6
- 2.Rxd5#
- 1...Sa8
- 2.Rxd5#
- 1...Sxe8
- 2.Rxd5#
- 1...dxe4
- 2.Sc4#
- 2.Bd4#
- 2.Qxh5#
- 1...Rf5
- Tries
- 1.Bxd5?
- threat
- 2.Sc4#
- 2.Bd4#
- 2.Qxh5#
- 2.Qxc7#
- 2.Qxg7#
- 1...Bxa4
- 2.Bd4#
- 2.Qxh5#
- 2.Qxg7#
- 1...Sxe4
- 2.Sc4#
- 1...Sxd5
- 2.Rxd5#
- 1...Sxe6
- 2.Sc4#
- 2.Qxe6#
- 1...Sxe8
- 2.Sc4#
- 1...Rf5
- 2.Sc4#
- 2.Bd4#
- 2.Qxf5#
- 2.Qxc7#
- 1...Rg5
- 2.Sc4#
- 2.Bd4#
- 2.Qxc7#
- 1...Rh6
- 2.Sc4#
- 2.Bd4#
- 2.Qf5#
- 2.Qxc7#
- 1...Rh7
- 2.Sc4#
- 2.Bd4#
- 2.Qf5#
- 2.Qxc7#
- 1...Rh8
- 2.Sc4#
- 2.Bd4#
- 2.Qf5#
- 2.Qxc7#
- 2.Qxg7#
- 1...Bb1
- 2.Bd4#
- 2.Qxh5#
- 2.Qxg7#
- 1...Bd1
- 2.Bd4#
- 2.Qxg7#
- 1...Bb3
- 2.Bd4#
- 2.Qxh5#
- 2.Qxg7#
- 1...Bd3
- 2.Bd4#
- 2.Qxh5#
- 2.Qxg7#
- 1...Bf6
- 2.Sc4#
- 2.Bd4#
- 2.Qxf6#
- 2.Qxc7#
- 1...Bh6
- 2.Sc4#
- 2.Bd4#
- 2.Qf6#
- 2.Qxc7#
- 1...Bf8
- 2.Sc4#
- 2.Bd4#
- 2.Qxh5#
- 2.Qf6#
- 1...Bh8
- 2.Sc4#
- 2.Bd4#
- 2.Qxh5#
- 2.Qxc7#
- 1...Sg4
- 2.Sc4#
- 2.Bd4#
- 2.Qxh5#
- 2.Qxc7#
- 1...Sb5
- 2.Sc4#
- 2.Qxh5#
- 2.Qxg7#
- 1...Sa6
- 2.Sc4#
- 2.Bd4#
- 2.Qxh5#
- 2.Qxg7#
- 1...Sa8
- 2.Sc4#
- 2.Bd4#
- 2.Qxh5#
- 2.Qxg7#
- 1...f3
- 2.Sc4#
- 2.Bd4#
- 2.Qxc7#
- 1...Bxe4!
- threat
- 1.Bc5?
- threat
- 2.Bd6#
- 1...Sxe4
- 2.Bd4#
- 1...Sxe8
- 2.Rxd5#
- 1...Bf8
- 2.Qf6#
- 1...Sb5
- 2.Rxd5#
- 1...d4!
- threat
- 1.Qg6?
- threat
- 2.Bd4#
- 1...Sxe6
- 2.Rxd5#
- 1...Sxe8
- 2.Rxd5#
- 1...Bf6
- 2.Qxf6#
- 1...Rf5
- 2.Qxf5#
- 1...Sb5
- 2.Rxd5#
- 1...d4
- 2.Sc4#
- 2.Bxd4#
- 1...f3!
- threat
- 1.Bxd5?
- Keys
- 1.exd5!
- threat
- 2.Qxf4#
- 1...Sxd5
- 2.Rxd5#
- 1...Sxe6
- 2.Qxe6#
- 1...Bf6
- 2.Qxf6#
- 1...Sd3
- 2.Re2#
- 2.Qxh5#
- 1...Rf5
- 2.Qxc7#
- 1...Be4
- 2.Bd4#
- 1...Bf5
- 2.Qxg7#
- 1...Bh6
- 2.Qf6#
- 1...Se4
- 2.Sc4#
- 2.Bd4#
- 1...f3
- 2.Qf4#
- threat
- 1.exd5!
This is a version of 83673
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- R(j);N_GUARD::QAR1(I),XR(j)
- R(j);N_GUARD::QAR1(I)
- B(b);SBLOCK,XP(E)::B(H)
- B(l);N_GUARD::QAB1(I),XB(l)
- B(l);N_GUARD::QAB1(I)
- S(c);SBLOCK,XP(E)::B(H)
- S(k);N_GUARD::R1(A),XP(h)
- S(k);N_GUARD,XP(G)::R1(A),XP(h)
- S(k);N_GUARD,XS(J)::R1(A),XP(h)
- Tries
- Try
- B(C);XP(h)
- Threat
- DUALS(5)
- Vars
- S(c);XP(E)::S(B)
- S(k);OGATE,XB(C)::R1(A),XS(k)
- S(k);XS(J)::S(B)
- Refutation
- B(b);XP(E)
- Try
- B(H);
- Threat
- B(H)
- Vars
- S(c);SBLOCK,XP(E)::B(H)
- S(k);N_GUARD,XS(J)::R1(A),XP(h)
- B(l);N_GUARD::QAB1(I)
- S(k);N_GUARD::R1(A),XP(h)
- Refutation
- P(h);
- Try
- Q(I);
- Threat
- B(H)
- Vars
- S(k);N_GUARD,XP(G)::R1(A),XP(h)
- S(k);N_GUARD,XS(J)::R1(A),XP(h)
- B(l);N_GUARD::QAB1(I),XB(l)
- R(j);N_GUARD::QAR1(I),XR(j)
- S(k);N_GUARD::R1(A),XP(h)
- Refutation
- P(f);
- Try
- Actual
- P(E);XP(h)
- Threat
- QAB1(I),XP(f)
- Vars
- S(k);OGATE,XP(E)::R1(A),XS(k)
- S(k);OGATE,XP(G)::QAR1(I),XS(k)
- B(l);N_GUARD::QAB1(I),XB(l)
- R(j);SBLOCK::QAB(I),XS(k)
- B(b);SBLOCK::B(H)
- B(b);SBLOCK::QAB(I),XB(l)
- B(l);N_GUARD::QAB1(I)
- P(f);::QAB1(I)
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).