MESON Chess Problem Database
Problem Display
PID: 150824 (8/P2Rr3/p4Rq1/pBBP4/3NQ3/K1k5/8/3b1Nb1 w - - 0 1)
Alaikov, Venelin
1st Prize, Shakhmatna misl, 2000
#2
10 + 7
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qh5
- 2.Qd3#
- 1...Qf7
- 2.Qd3#
- 1...Qe8
- 2.Qd3#
- 1...Qg2
- 2.Qd3#
- 1...Qg4
- 2.Qd3#
- 1...Qg5
- 2.Qd3#
- 1...Qxf6
- 2.Qd3#
- 1...Qh6
- 2.Qd3#
- 1...Qg7
- 2.Qd3#
- 1...Qg8
- 2.Qd3#
- 1...Rxd7
- 2.Qe1#
- 1...Rf7
- 2.Qe1#
- 1...Rg7
- 2.Qe1#
- 1...Rh7
- 2.Qe1#
- 1...Bc2
- 2.Se2#
- 1...Be2
- 2.Sxe2#
- 1...Bb3
- 2.Se2#
- 1...Ba4
- 2.Se2#
- 1...Bxd4
- 2.Bxd4#
- 1...a4
- 2.Bb4#
- 1...axb5
- 2.Sxb5#
- 1...Qh5
- Tries
- 1.Rf3+?
- 1...Be3
- 2.Rxe3#
- 1...Bxf3!
- 1...Be3
- 1.Rc6?
- threat
- 2.Bb4#
- 2.Bd6#
- 1...Qxe4
- 2.Bb6#
- 1...Qxc6
- 2.Qd3#
- 1...Bxd4
- 2.Bb4#
- 2.Bxd4#
- 1...Qd6
- 2.Bb4#
- 2.Bxd6#
- 2.Qd3#
- 1...Be2
- 2.Sxe2#
- 2.Bb4#
- 1...Bb3
- 2.Se2#
- 2.Bb4#
- 1...Rxe4!
- threat
- 1.Rxg6?
- threat
- 2.Qd3#
- 1...axb5
- 2.Sxb5#
- 1...Bc2
- 2.Se2#
- 2.Qxc2#
- 1...Be2
- 2.Sxe2#
- 2.Qc2#
- 1...Rxe4!
- threat
- 1.Rc7?
- threat
- 2.Bb4#
- 2.Bxe7#
- 1...Qxf6
- 2.Bb4#
- 2.Qd3#
- 1...Rxe4
- 2.Bb6#
- 1...Rxc7
- 2.Qe1#
- 1...Bxd4
- 2.Bb4#
- 2.Bxd4#
- 1...Qe8
- 2.Bb4#
- 2.Qd3#
- 1...Qg3
- 2.Bb4#
- 1...Re5
- 2.Bb4#
- 2.Bb6#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...Re6
- 2.Bb4#
- 2.Bd6#
- 1...Rd7
- 2.Bb4#
- 2.Qe1#
- 1...Rf7
- 2.Bb4#
- 2.Be7#
- 2.Qe1#
- 1...Rg7
- 2.Bb4#
- 2.Be7#
- 2.Qe1#
- 1...Rh7
- 2.Bb4#
- 2.Be7#
- 2.Qe1#
- 1...Re8
- 2.Bb4#
- 2.Bb6#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...Be2
- 2.Sxe2#
- 2.Bb4#
- 1...Bb3
- 2.Se2#
- 2.Bb4#
- 1...Bh2
- 2.Bb4#
- 1...Qxe4!
- threat
- 1.Rf3+?
- Keys
- 1.Bb6!
- threat
- 2.Bxa5#
- 1...Qxe4
- 2.Rc6#
- 1...Rxe4
- 2.Rc7#
- 1...axb5
- 2.Sxb5#
- 1...a4
- 2.Ba5#
- threat
- 1.Bb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 19
- Sets
- Q(f);N_GUARD::QAR1(D)
- Q(f);N_GUARD,XR(H)::QAR1(D)
- R(g);N_GUARD,XR(J)::QAB(D)
- R(g);N_GUARD::QAB(D)
- B(a);N_GUARD::S(C)
- B(a);N_GUARD::S(C),XB(a)
- B(b);OGATE,XS(C)::B(F),XB(b)
- P(d);N_GUARD::B(F)
- P(e);XB(E)::S(C),XP(e)
- Tries
- Try
- R(H);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::R(H),XB(b)
- Refutation
- B(a);XR(H)
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- Q(f);N_GUARD,XQ(D)::R(H)+B(F)
- Q(f);N_GUARD,XR(H)::QAR1(D)
- Refutation
- R(g);XQ(D)
- Try
- R(H);XQ(f)
- Threat
- QAR1(D)
- Vars
- P(e);XB(E)::S(C),XP(e)
- Refutation
- R(g);XQ(D)
- Try
- R(J);
- Threat
- DUALS(2)
- Vars
- R(g);N_GUARD,XQ(D)::R(J)+B(F)
- R(g);N_GUARD,XR(J)::QAB(D)
- Q(f);::R(J)+B(F),DCHECK
- B(b);::R(J)+B(F),DCHECK
- Refutation
- Q(f);XQ(D)
- Try
- Actual
- B(F);
- Threat
- B(F),XP(d)
- Vars
- Q(f);N_GUARD,XQ(D)::R(H)
- R(g);N_GUARD,XQ(D)::R(J)
- P(e);XB(E)::S(C),XP(e)
- P(d);::B(F)
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).