MESON Chess Problem Database
Problem Display
PID: 103439 (bN1R4/nrp1kNp1/3b2P1/1P1p1PP1/1B2pP2/4Q3/2R5/2K5 w - - 0 1)
Aleksandrov, Vladimir Aleksandrovich
Shakhmatnaya kompozitsiya, 1992
#2
12 + 9
| 6490 | yacpdb | 2009 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rxb5
- 2.Rxc7#
- 1...Rb6
- 2.Rxc7#
- 1...Rxb8
- 2.Rxc7#
- 1...Bc5
- 2.Bxc5#
- 2.Qxc5#
- 1...Sxb5
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...d4
- 2.Qxe4#
- 1...c6
- 2.Bxd6#
- 1...Rxb5
- Tries
- 1.Rc5?
- 1...Rxb5
- 2.Rxc7#
- 1...Rxb8
- 2.Rxc7#
- 1...Bxf4
- 2.Rxc7#
- 1...Bxc5
- 2.Bxc5#
- 2.Qxc5#
- 1...Sxb5
- 2.Sc6#
- 1...Rb6
- 2.Rxc7#
- 1...Be5
- 2.Rxc7#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...d4
- 2.Re5#
- 1...c6!
- 1...Rxb5
- 1.Qd4?
- threat
- 2.Qe5#
- 1...Sc6
- 2.Sxc6#
- 1...c5!
- threat
- 1.Qb6?
- 1...Rxb6
- 2.Rxc7#
- 1...Rxb8
- 2.Rxc7#
- 2.Qxc7#
- 1...Bxb4
- 2.Qe6#
- 1...Sxb5
- 2.Sc6#
- 1...cxb6
- 2.Bxd6#
- 1...c5
- 2.Qxd6#
- 1...Bc5
- 2.Bxc5#
- 2.Qxc5#
- 2.Qe6#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...e3
- 2.Qxe3#
- 1...c6
- 2.Bxd6#
- 1...d4!
- 1...Rxb6
- 1.Qxa7?
- threat
- 2.Sc6#
- 1...Rxb5
- 2.Bxd6#
- 2.Rxc7#
- 2.Qxc7#
- 1...Rxb8
- 2.Bxd6#
- 2.Rxc7#
- 2.Qxc7#
- 1...Rb6
- 2.Rxc7#
- 2.Qxc7#
- 1...c6
- 2.Sxc6#
- 2.Bxd6#
- 1...Rxa7!
- threat
- 1.f6+?
- 1...Ke6
- 2.Qh3#
- 1...gxf6!
- 1...Ke6
- 1.Rc5?
- Keys
- 1.Qc5!
- 1...Rxb5
- 2.Qxc7#
- 1...Rxb8
- 2.Qxc7#
- 1...Bxc5
- 2.Bxc5#
- 1...Sxb5
- 2.Sc6#
- 1...Rb6
- 2.Qxc7#
- 1...Sc6
- 2.Sxc6#
- 1...Sc8
- 2.Sc6#
- 1...e3
- 2.Qxe3#
- 1...d4
- 2.Qe5#
- 1...c6
- 2.Qxd6#
- 1...Rxb5
- 1.Qc5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD,XP(F)::R(B),XP(f)
- R(e);N_GUARD::R(B),XP(f)
- R(e);N_GUARD,XS(K)::R(B),XP(f)
- S(d);N_GUARD,XP(F)::S(K)
- S(d);N_GUARD::S(K),XS(d)
- S(d);N_GUARD::S(K)
- P(b);N_GUARD::QAR(C),XP(a)
- P(f);N_GUARD::B(D),XB(c)
- Tries
- Try
- R(B);N_PINB(c)
- Vars
- R(e);N_GUARD,XP(F)::R(B),XP(f)
- R(e);N_GUARD,XS(K)::R(B),XP(f)
- B(c);P_PINQ(C),XP(E)::B(D)+R(B),DCHECK,XP(f)
- S(d);N_GUARD,XP(F)::S(K)
- R(e);N_GUARD::R(B),XP(f)
- B(c);N_SPINP(a)::B(D)+R(B),DCHECK,XP(f)
- S(d);N_GUARD::S(K),XS(d)
- S(d);N_GUARD::S(K)
- P(b);OGATE::R(B)
- Refutation
- P(f);
- Try
- Q(C);N_PINP(a)
- Threat
- QAR2(C)
- Vars
- S(d);N_GUARD::S(K),XS(d)
- Refutation
- P(f);N_SPINB(c)
- Try
- Q(C);N_PINP(a)
- Vars
- R(e);N_GUARD,XQ(C)::R(B),XP(f)
- B(c);N_SPINB(c),OGATE,XB(D)::QAR1(C)
- S(d);N_GUARD,XP(F)::S(K)
- P(f);N_GUARD,XQ(C)::B(D),XB(c)
- P(f);N_GUARD,N_SPINB(c)::QAB1(C),XB(c)
- S(d);N_GUARD::S(K),XS(d)
- S(d);N_GUARD::S(K)
- P(a);OGATEB::QAR(C),XP(a)
- P(f);N_GUARD::B(D),XB(c)
- Refutation
- P(b);
- Try
- Q(C);N_PINP(a),XS(d)
- Threat
- S(K)
- Refutation
- R(e);XQ(C)
- Try
- P(G);CHECK
- Vars
- K(g);N_SPINB(c),P-FLIGHT::QAB(C)
- Refutation
- P(h);XP(G)
- Try
- Actual
- Q(C);N_PINP(a)
- Vars
- R(e);N_GUARD,XP(F)::QAR2(C),XP(f)
- R(e);N_GUARD,XS(K)::QAR2(C),XP(f)
- B(c);OGATE,XQ(C)::B(D),XB(c)
- S(d);N_GUARD,XP(F)::S(K)
- R(e);N_GUARD::QAR2(C),XP(f)
- S(d);N_GUARD::S(K),XS(d)
- S(d);N_GUARD::S(K)
- P(a);OGATEB::QAR(C),XP(a)
- P(b);OGATE::QAR2(C)
- P(f);N_GUARD::QAB1(C),XB(c)
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).