MESON Chess Problem Database
Problem Display
PID: 81165 (1b3r2/3r4/1Q1pN3/q1P2R1R/2P1k2K/2P5/2n1P2B/5N2 w - - 0 1)
Alaikov, Venelin
4th Prize, Le Courrier des Echecs, 1977
#2
11 + 7
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rc8
- 2.Rf4#
- 1...Rd8
- 2.Rf4#
- 1...Re8
- 2.Rf4#
- 1...Rg8
- 2.Rf4#
- 1...Rh8
- 2.Rf4#
- 1...Se3
- 2.Sd2#
- 2.Sg3#
- 1...Rc8
- Tries
- 1.Bf4?
- threat
- 2.Sd2#
- 2.Sg3#
- 1...dxc5
- 2.Sg3#
- 1...Rg7
- 2.Sd2#
- 1...Rg8
- 2.Sd2#
- 1...Qxc3!
- threat
- 1.Bxd6?
- threat
- 2.Re5#
- 2.Qc6#
- 1...Qxc3
- 2.Qc6#
- 1...Qxb6
- 2.Re5#
- 1...Qxc5
- 2.Sxc5#
- 1...Rxd6
- 2.Re5#
- 1...Bxd6
- 2.Qc6#
- 1...Qa4
- 2.Re5#
- 1...Qb5
- 2.Re5#
- 1...Qa6
- 2.Re5#
- 1...Qa8
- 2.Re5#
- 1...Rc7
- 2.Re5#
- 1...Rc8
- 2.Rf4#
- 2.Re5#
- 1...Se3
- 2.Sd2#
- 2.Sg3#
- 2.Re5#
- 1...Sb4
- 2.Re5#
- 1...Sd4
- 2.Re5#
- 1...Rxf5!
- threat
- 1.Rf3?
- threat
- 2.Sd2#
- 2.Sg3#
- 2.Sg5#
- 1...Rf4+
- 2.Rxf4#
- 1...Qxc3
- 2.Sg3#
- 1...Qxc5
- 2.Sd2#
- 2.Sg3#
- 1...dxc5
- 2.Sg5#
- 1...Rg7
- 2.Sd2#
- 1...Rf5
- 2.Sd2#
- 1...Rg8
- 2.Sd2#
- 2.Rf4#
- 1...d5
- 2.Sd2#
- 2.Sg5#
- 1...Rxf3!
- threat
- 1.Rxf8?
- threat
- 2.Sg5#
- 2.Rf4#
- 1...Qxc3
- 2.Rf4#
- 1...Qxc5
- 2.Rf4#
- 1...dxc5
- 2.Sg5#
- 1...Rg7
- 2.Rf4#
- 1...d5
- 2.Sg5#
- 1...Rf7!
- threat
- 1.Bf4?
- Keys
- 1.cxd6!
- threat
- 2.Sd2#
- 2.Sg3#
- 1...Qxc3
- 2.Qc6#
- 1...Qxb6
- 2.Re5#
- 1...Qxf5
- 2.Sd2#
- 1...Rxd6
- 2.Sg3#
- 1...Rxf5
- 2.Sd2#
- 1...Bxd6
- 2.Sd2#
- 1...Qc5
- 2.Sxc5#
- 1...Qd5
- 2.Sg3#
- 1...Qe5
- 2.Sd2#
- 2.Rxe5#
- 1...Rg7
- 2.Sd2#
- 1...Rg8
- 2.Sd2#
- 2.Rf4#
- 1...Sd4
- 2.Qxd4#
- threat
- 1.cxd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 5
- Sets
- R(g);N_GUARD::R1(H)
- R(g);N_GUARD,P_PINR(I)::R1(H)
- Tries
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- P(d);XP(G)::S(A)
- R(e);::S(A)
- R(g);::S(A)
- Refutation
- Q(c);XP(D)
- Try
- B(C);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(c);XP(D)::QAB(J)
- Q(c);XQ(J)::R1(H)
- Q(c);XP(G)::S(K),XQ(c)
- R(e);XB(C)::R1(H)
- B(f);XB(C)::QAB(J)
- Q(c);::R1(H)
- R(e);::R1(H)
- S(a);::R1(H)
- Refutation
- R(g);XR(H)
- Try
- R(H);
- Threat
- DUALS(3)
- Vars
- R(g);CHECK,N_GUARD::R1(H),XR(g)
- Q(c);XP(D)::S(A)
- P(d);XP(G)::S(K)
- R(e);::S(A)
- R(g);::S(A)
- Refutation
- R(g);XR(H)
- Try
- R(H);XR(g)
- Threat
- DUALS(2)
- Vars
- Q(c);XP(D)::R1(H)
- Q(c);XP(G)::R1(H)
- P(d);XP(G)::S(K)
- R(e);::R1(H)
- P(d);::S(K)
- Refutation
- R(e);
- Try
- Actual
- P(G);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD,XP(D)::QAB(J)
- Q(c);N_GUARD,XQ(J)::R1(H)
- Q(c);XR(H)::S(A)
- R(e);XP(G)::S(A)
- R(g);XR(H)::S(A)
- B(f);XP(G)::S(A)
- Q(c);N_GUARD::S(K),XQ(c)
- Q(c);::S(A)
- R(e);::S(A)
- S(a);N_GUARD::QAR1(J),XS(a)
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).