MESON Chess Problem Database
Problem Display
PID: 105431 (6Q1/p6p/3p1P1K/3NB1RR/1q2k1N1/3nPp2/r7/b4B2 w - - 0 1)
Erokhin, Vladimir Alekseevich
Sachove umeni (Ceskoslovensky sach), 1984
#2
10 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sb2
- 2.Sf2#
- 1...f2
- 2.Bg2#
- 1...Sb2
- Tries
- 1.Sf4?
- threat
- 2.Bxd3#
- 2.Qd5#
- 2.Qxh7#
- 1...Sxe5
- 2.Qd5#
- 1...f2
- 2.Bg2#
- 2.Qd5#
- 1...Qd2
- 2.Qd5#
- 2.Qxh7#
- 1...Qa3
- 2.Qd5#
- 2.Qxh7#
- 1...Qc3
- 2.Qd5#
- 2.Qxh7#
- 1...Qa5
- 2.Bxd3#
- 2.Qxh7#
- 1...Qc5
- 2.Bxd3#
- 2.Qxh7#
- 1...Qb1
- 2.Qd5#
- 2.Qxh7#
- 1...Qb3
- 2.Qxh7#
- 1...Qc4
- 2.Qxh7#
- 1...Qd4
- 2.Qxh7#
- 1...Qb5
- 2.Qxh7#
- 1...Qb7
- 2.Bxd3#
- 1...Rd2
- 2.Qd5#
- 2.Qxh7#
- 1...Re2
- 2.Qd5#
- 2.Qxh7#
- 1...Ra3
- 2.Qd5#
- 2.Qxh7#
- 1...Ra5
- 2.Bxd3#
- 2.Qxh7#
- 1...Sc1
- 2.Qd5#
- 2.Qxh7#
- 1...Se1
- 2.Qd5#
- 2.Qxh7#
- 1...Sb2
- 2.Qd5#
- 2.Qxh7#
- 1...Sf2
- 2.Qd5#
- 2.Qxh7#
- 1...Sc5
- 2.Qd5#
- 2.Qxh7#
- 1...d5
- 2.Bxd3#
- 2.Qxd5#
- 2.Qxh7#
- 1...Sxf4!
- threat
- 1.Sc7?
- threat
- 2.Qd5#
- 2.Qxh7#
- 1...Sxe5
- 2.Qd5#
- 1...f2
- 2.Bg2#
- 2.Qd5#
- 1...Qa5
- 2.Qxh7#
- 1...Qc5
- 2.Qxh7#
- 1...Qb3
- 2.Qxh7#
- 1...Qc4
- 2.Qxh7#
- 1...Qd4
- 2.Qxh7#
- 1...Qb5
- 2.Qxh7#
- 1...Qb7
- 2.Qxh7#
- 1...Ra5
- 2.Qxh7#
- 1...d5
- 2.Qxd5#
- 2.Qxh7#
- 1...Sf4!
- threat
- 1.Se7?
- threat
- 2.Qd5#
- 2.Qxh7#
- 1...Sxe5
- 2.Qd5#
- 1...f2
- 2.Bg2#
- 2.Qd5#
- 1...Qa5
- 2.Qxh7#
- 1...Qc5
- 2.Qxh7#
- 1...Qb3
- 2.Qxh7#
- 1...Qc4
- 2.Qxh7#
- 1...Qd4
- 2.Qxh7#
- 1...Qb5
- 2.Qxh7#
- 1...Qb7
- 2.Qxh7#
- 1...Ra5
- 2.Qxh7#
- 1...d5
- 2.Qxd5#
- 2.Qxh7#
- 1...Sf4!
- threat
- 1.Rh4?
- threat
- 2.Sf2#
- 1...f2
- 2.Bg2#
- 1...Rf2
- 2.Sxf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sf4!
- threat
- 1.Qa8?
- threat
- 2.Sc3#
- 1...Qc3
- 2.Sxc3#
- 1...Bc3
- 2.Sxc3#
- 1...Qb7!
- threat
- 1.Sf4?
- Keys
- 1.Bb2!
- threat
- 2.Qxh7#
- 1...f2
- 2.Bg2#
- 1...Sf4
- 2.Sf2#
- 1...Qb7
- 2.Sc3#
- 1...Se5
- 2.Sf2#
- threat
- 1.Bb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- S(c);N_GUARD,S_CUTR(b)::S(C)
- P(d);OGATEB::B(A)
- Tries
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- S(c);XB(E)::QAB1(J)
- Q(e);::QAB(J),XP(i)
- Q(e);::B(A),XS(c)
- Refutation
- S(c);XS(D)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(c);XB(E)::QAB1(J)
- Q(e);::QAB(J),XP(i)
- R(b);::QAB(J),XP(i)
- Refutation
- S(c);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(c);XB(E)::QAB1(J)
- Q(e);::QAB(J),XP(i)
- R(b);::QAB(J),XP(i)
- Refutation
- S(c);
- Try
- R(G);
- Threat
- R(G)+S(C),DCHECK
- Vars
- P(d);OGATEB::B(A)
- R(b);::R(G)+S(C),DCHECK,XR(b)
- S(c);::R(G)+S(C),DCHECK,XS(c)
- Refutation
- S(c);
- Try
- Q(J);
- Threat
- QAB(J)+S(D),DCHECK
- Vars
- Q(e);::QAB(J)+S(D),DCHECK,XQ(e)
- B(a);::QAB(J)+S(D),DCHECK,XB(a)
- Refutation
- Q(e);
- Try
- Actual
- B(E);
- Threat
- QAB(J),XP(i)
- Vars
- P(d);OGATEB::B(A)
- S(c);N_GUARD::S(C)
- Q(e);N_GUARD::S(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).