MESON Chess Problem Database
Problem Display
PID: 65044 (6Q1/4p3/1p2KB1b/5R1r/3Pk1P1/1Npn1p1R/r3bPN1/1B6 w - - 0 1)
Alaikov, Venelin
1st Prize, Problemas, 1986
#2
11 + 10
| 5159 | FIDE Album (1986-1988) (Annexe) | 1996 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rb2
- 2.Qa8#
- 1...Rc2
- 2.Qa8#
- 1...Rd2
- 2.Qa8#
- 1...Ra8
- 2.Qxa8#
- 1...Rxh3
- 2.Re5#
- 1...Rh4
- 2.Re5#
- 1...Rg5
- 2.Rf4#
- 1...Bf4
- 2.Rxf4#
- 1...Bg5
- 2.Re5#
- 1...Bg7
- 2.Rf4#
- 1...Bf8
- 2.Rf4#
- 1...b5
- 2.Sc5#
- 1...Rb2
- Tries
- 1.Bg5?
- threat
- 2.Rf4#
- 2.Re5#
- 1...Rxg5
- 2.Rf4#
- 1...Bxg5
- 2.Re5#
- 1...Rc2
- 2.Qa8#
- 1...Ra5
- 2.Rf4#
- 1...Bg7
- 2.Rf4#
- 1...c2!
- threat
- 1.Qh7?
- threat
- 2.Rf4#
- 2.Re5#
- 2.Rg5#
- 2.Rfxh5#
- 1...Rxh3
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.Rg5#
- 2.Rh5#
- 1...Rxf5
- 2.Qxf5#
- 1...exf6
- 2.Rf4#
- 2.Re5#
- 2.Qb7#
- 1...Ra5
- 2.Rf4#
- 2.Re5#
- 1...Rh4
- 2.Rfxf3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.Rg5#
- 2.Rh5#
- 1...Rg5
- 2.Rf4#
- 2.Re5#
- 2.Rxg5#
- 1...Bc1
- 2.Rf4#
- 2.Re5#
- 2.Rfxh5#
- 1...Bd2
- 2.Rf4#
- 2.Re5#
- 2.Rfxh5#
- 1...Be3
- 2.Rf4#
- 2.Re5#
- 2.Rfxh5#
- 1...Bf4
- 2.Rxf4#
- 2.Re5#
- 2.Rfxh5#
- 1...Bg5
- 2.Rf4#
- 2.Re5#
- 1...Bg7
- 2.Rf4#
- 2.Re5#
- 2.Rfxh5#
- 1...Bf8
- 2.Rf4#
- 2.Re5#
- 2.Rfxh5#
- 1...fxg2!
- threat
- 1.Qg5?
- threat
- 2.Rf4#
- 2.Re5#
- 1...Rxg5
- 2.Rf4#
- 1...Bxg5
- 2.Re5#
- 1...exf6
- 2.Rf4#
- 1...Ra5
- 2.Rf4#
- 1...c2
- 2.Sd2#
- 1...Rc2!
- threat
- 1.Qg6?
- threat
- 2.Rf4#
- 2.Re5#
- 2.Rg5#
- 2.Rfxh5#
- 1...Rxh3
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.Rg5#
- 2.Rh5#
- 1...Rxf5
- 2.Qxf5#
- 1...exf6
- 2.Rf4#
- 2.Re5#
- 1...Ra5
- 2.Rf4#
- 2.Re5#
- 1...Rh4
- 2.Rfxf3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.Rg5#
- 2.Rh5#
- 1...Rg5
- 2.Rf4#
- 2.Re5#
- 2.Rxg5#
- 1...Bf4
- 2.Rxf4#
- 2.Re5#
- 2.Rg5#
- 2.Rfxh5#
- 1...Bg5
- 2.Rfxf3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.Rxg5#
- 1...fxg2!
- threat
- 1.Bg5?
- Keys
- 1.g5!
- threat
- 2.Rf4#
- 2.Re5#
- 1...Rxg5
- 2.Rf4#
- 1...Bxg5
- 2.Re5#
- 1...fxg2
- 2.Re3#
- 1...exf6
- 2.Rf4#
- 1...Ra5
- 2.Rf4#
- 1...Rc2
- 2.Qa8#
- 1...Rh4
- 2.Rxh4#
- 2.Re5#
- 1...c2
- 2.Sd2#
- threat
- 1.g5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 9
- Sets
- R(a);N_GUARD::QAB(K)
- R(a);N_GUARD,N_SPINS(d)::QAB(K)
- R(a);N_GUARD::QAB(K),XR(a)
- R(g);N_GUARD,XR(E)::R1(H)
- R(g);N_GUARD::R1(H)
- R(g);S_CUTB(i)::R1(H)
- B(i);N_GUARD::R1(H),XB(i)
- B(i);S_CUTR(g)::R1(H)
- B(i);N_GUARD::R1(H)
- P(h);N_GUARD::S(D)
- Tries
- Try
- B(J);
- Threat
- DUALS(2)
- Vars
- R(g);XB(J)::R1(H)
- B(i);XB(J)::R1(H)
- R(a);N_GUARD,N_SPINS(d)::QAB(K)
- R(a);::R1(H)
- B(i);::R1(H)
- Refutation
- P(c);N_SPINS(d)
- Try
- Q(K);
- Threat
- DUALS(4)
- Vars
- R(g);OGATE,P_SPINR(g),XR(H)::QAB1(K),XR(g)
- Refutation
- P(e);XS(C)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- R(g);XQ(K)::R1(H)
- B(i);XQ(K)::R1(H)
- P(j);XB(J)::R1(H)
- R(a);::R1(H)
- P(c);N_GUARD,N_SPINS(d),S_CUTR(a)::S(D)
- Refutation
- R(a);N_SPINS(d)
- Try
- Q(K);
- Threat
- DUALS(4)
- Vars
- R(g);OGATE,P_SPINR(g),XR(H)::QAB1(K),XR(g)
- Refutation
- P(e);XS(C)
- Try
- Actual
- P(G);
- Threat
- DUALS(2)
- Vars
- R(g);XP(G)::R1(H)
- B(i);XP(G)::R1(H)
- P(e);OGATE,XS(C)::R1(E)
- P(j);XB(J)::R1(H)
- R(a);::R1(H)
- R(a);N_GUARD,N_SPINS(d)::QAB(K)
- P(c);N_GUARD,N_SPINS(d),S_CUTR(a)::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).