MESON Chess Problem Database
Problem Display
PID: 60455 (N1r2q2/2BPn3/pP1p1R1b/1PkB2r1/Qp1p4/3P4/R2N2b1/2K5 w - - 0 1)
Alaikov, Venelin
1st Prize, Shakhmatna misl, 2001
#2
12 + 11
| 102 | Probleemblad | 2005 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rxd5
- 2.Rc2#
- 1...Bxd5
- 2.Bxd6#
- 1...Sxd5
- 2.Sb3#
- 1...b3
- 2.Qc4#
- 1...Rxd5
- Tries
- 1.Bxg2?
- threat
- 2.Sb3#
- 2.Bxd6#
- 2.Rc2#
- 1...Qxf6
- 2.Sb3#
- 2.Rc2#
- 1...Rxc7
- 2.Sb3#
- 2.Rc2#
- 1...Rxa8
- 2.Sb3#
- 2.Rc2#
- 1...Qf7
- 2.Bxd6#
- 1...Qg8
- 2.Bxd6#
- 1...Rg3
- 2.Bxd6#
- 2.Rc2#
- 1...Rg4
- 2.Bxd6#
- 2.Rc2#
- 1...Rd5
- 2.Rc2#
- 1...Re5
- 2.Bxd6#
- 2.Rc2#
- 1...Rf5
- 2.Bxd6#
- 2.Rc2#
- 1...Rh5
- 2.Bxd6#
- 2.Rc2#
- 1...Rg6
- 2.Bxd6#
- 2.Rc2#
- 1...Rg7
- 2.Bxd6#
- 2.Rc2#
- 1...Rg8
- 2.Bxd6#
- 2.Rc2#
- 1...Sd5
- 2.Sb3#
- 2.Se4#
- 1...Sf5
- 2.Sb3#
- 2.Rc2#
- 1...Sc6
- 2.Sb3#
- 2.Rc2#
- 1...Sg6
- 2.Sb3#
- 2.Rc2#
- 1...Sg8
- 2.Sb3#
- 2.Rc2#
- 1...b3
- 2.Sxb3#
- 2.Bxd6#
- 2.Qc4#
- 1...d5
- 2.Sb3#
- 2.Bd6#
- 2.Rc2#
- 1...Rxg2!
- threat
- 1.Bb3?
- threat
- 2.Bxd6#
- 2.Rc2#
- 1...Qxf6
- 2.Rc2#
- 1...Rxc7
- 2.Rc2#
- 1...Rxa8
- 2.Rc2#
- 1...Bxa8
- 2.Rc2#
- 1...axb5
- 2.Rc2#
- 1...Qf7
- 2.Bxd6#
- 1...Qg8
- 2.Bxd6#
- 1...Rd5
- 2.Rc2#
- 1...Bd5
- 2.Bxd6#
- 1...Sf5
- 2.Rc2#
- 1...Sc6
- 2.Rc2#
- 1...Sg6
- 2.Rc2#
- 1...Sg8
- 2.Rc2#
- 1...d5
- 2.Bd6#
- 2.Rc2#
- 1...Sd5!
- threat
- 1.Bf3?
- threat
- 2.Sb3#
- 2.Bxd6#
- 2.Rc2#
- 1...Qxf6
- 2.Sb3#
- 2.Rc2#
- 1...Rxc7
- 2.Sb3#
- 2.Rc2#
- 1...Rxa8
- 2.Sb3#
- 2.Rc2#
- 1...Qf7
- 2.Bxd6#
- 1...Qg8
- 2.Bxd6#
- 1...Rg3
- 2.Bxd6#
- 2.Rc2#
- 1...Rg4
- 2.Bxd6#
- 2.Rc2#
- 1...Rd5
- 2.Rc2#
- 1...Re5
- 2.Bxd6#
- 2.Rc2#
- 1...Rf5
- 2.Bxd6#
- 2.Rc2#
- 1...Rh5
- 2.Bxd6#
- 2.Rc2#
- 1...Rg6
- 2.Bxd6#
- 2.Rc2#
- 1...Rg7
- 2.Bxd6#
- 2.Rc2#
- 1...Rg8
- 2.Bxd6#
- 2.Rc2#
- 1...Sd5
- 2.Sb3#
- 2.Se4#
- 1...Sf5
- 2.Sb3#
- 2.Rc2#
- 1...Sc6
- 2.Sb3#
- 2.Rc2#
- 1...Sg6
- 2.Sb3#
- 2.Rc2#
- 1...Sg8
- 2.Sb3#
- 2.Rc2#
- 1...b3
- 2.Sxb3#
- 2.Bxd6#
- 2.Qc4#
- 1...d5
- 2.Sb3#
- 2.Bd6#
- 2.Rc2#
- 1...Bxf3!
- threat
- 1.Bc4?
- threat
- 2.Sb3#
- 2.Bxd6#
- 1...Qxf6
- 2.Sb3#
- 1...Rxc7
- 2.Sb3#
- 1...Rxa8
- 2.Sb3#
- 1...Bxa8
- 2.Sb3#
- 1...axb5
- 2.Qxb5#
- 1...Rg3
- 2.Bxd6#
- 1...Rg4
- 2.Bxd6#
- 1...Re5
- 2.Bxd6#
- 1...Rf5
- 2.Bxd6#
- 1...Rh5
- 2.Bxd6#
- 1...Rg6
- 2.Bxd6#
- 1...Rg7
- 2.Bxd6#
- 1...Rg8
- 2.Bxd6#
- 1...Sd5
- 2.Sb3#
- 1...Sf5
- 2.Sb3#
- 1...Sc6
- 2.Sb3#
- 1...Sg6
- 2.Sb3#
- 1...Sg8
- 2.Sb3#
- 1...b3
- 2.Sxb3#
- 2.Bxd6#
- 2.Qa3#
- 1...d5
- 2.Sb3#
- 2.Bd6#
- 1...Rd5!
- threat
- 1.Be4?
- threat
- 2.Sb3#
- 2.Bxd6#
- 2.Rc2#
- 1...Qxf6
- 2.Sb3#
- 2.Rc2#
- 1...Rxc7
- 2.Sb3#
- 2.Rc2#
- 1...Rxa8
- 2.Sb3#
- 2.Rc2#
- 1...Qf7
- 2.Bxd6#
- 1...Qg8
- 2.Bxd6#
- 1...Rg3
- 2.Bxd6#
- 2.Rc2#
- 1...Rg4
- 2.Bxd6#
- 2.Rc2#
- 1...Rd5
- 2.Rc2#
- 1...Re5
- 2.Bxd6#
- 2.Rc2#
- 1...Rf5
- 2.Bxd6#
- 2.Rc2#
- 1...Rh5
- 2.Bxd6#
- 2.Rc2#
- 1...Rg6
- 2.Bxd6#
- 2.Rc2#
- 1...Rg7
- 2.Bxd6#
- 2.Rc2#
- 1...Rg8
- 2.Bxd6#
- 2.Rc2#
- 1...Sd5
- 2.Sb3#
- 1...Sf5
- 2.Sb3#
- 2.Rc2#
- 1...Sc6
- 2.Sb3#
- 2.Rc2#
- 1...Sg6
- 2.Sb3#
- 2.Rc2#
- 1...Sg8
- 2.Sb3#
- 2.Rc2#
- 1...b3
- 2.Sxb3#
- 2.Bxd6#
- 2.Qc4#
- 1...d5
- 2.Sb3#
- 2.Bd6#
- 2.Rc2#
- 1...Bxe4!
- threat
- 1.Be6?
- threat
- 2.Sb3#
- 2.Rc2#
- 1...axb5
- 2.Rc2#
- 2.Qc2#
- 1...Rg3
- 2.Rc2#
- 1...Rg4
- 2.Rc2#
- 1...Rd5
- 2.Rc2#
- 1...Re5
- 2.Rc2#
- 1...Rf5
- 2.Rc2#
- 1...Rh5
- 2.Rc2#
- 1...Rg6
- 2.Rc2#
- 1...Rg7
- 2.Rc2#
- 1...Rg8
- 2.Rc2#
- 1...Sd5
- 2.Sb3#
- 1...b3
- 2.Sxb3#
- 2.Qc4#
- 1...Bd5!
- threat
- 1.Bf7?
- threat
- 2.Sb3#
- 2.Bxd6#
- 2.Rc2#
- 1...Rxc7
- 2.Sb3#
- 2.Rc2#
- 1...Rxa8
- 2.Sb3#
- 2.Rc2#
- 1...Bxa8
- 2.Sb3#
- 2.Rc2#
- 1...axb5
- 2.Rc2#
- 2.Qc2#
- 1...Rg3
- 2.Bxd6#
- 2.Rc2#
- 1...Rg4
- 2.Bxd6#
- 2.Rc2#
- 1...Rd5
- 2.Rc2#
- 1...Re5
- 2.Bxd6#
- 2.Rc2#
- 1...Rf5
- 2.Bxd6#
- 2.Rc2#
- 1...Rh5
- 2.Bxd6#
- 2.Rc2#
- 1...Rg6
- 2.Bxd6#
- 2.Rc2#
- 1...Rg7
- 2.Bxd6#
- 2.Rc2#
- 1...Rg8
- 2.Bxd6#
- 2.Rc2#
- 1...Bd5
- 2.Bxd6#
- 1...Sd5
- 2.Sb3#
- 1...Sf5
- 2.Sb3#
- 2.Rc2#
- 1...Sc6
- 2.Sb3#
- 2.Rc2#
- 1...Sg6
- 2.Sb3#
- 2.Rc2#
- 1...Sg8
- 2.Sb3#
- 2.Rc2#
- 1...b3
- 2.Sxb3#
- 2.Bxd6#
- 2.Qc4#
- 1...d5
- 2.Sb3#
- 2.Bd6#
- 2.Rc2#
- 1...Qxf7!
- threat
- 1.Qc2+?
- 1...Kxb5
- 2.Qc4#
- 1...Kxd5!
- 1...Kxb5
- 1.Qb3?
- threat
- 2.Qc4#
- 1...Kxb5
- 2.Qc4#
- 1...axb5
- 2.Bxd6#
- 2.Rc2#
- 1...Bxd5!
- threat
- 1.Qxb4+?
- 1...Kxd5
- 2.Qxd6#
- 1...Kxb4!
- 1...Kxd5
- 1.Bxg2?
- Keys
- 1.bxa6!
- threat
- 2.Qa5#
- 1...Kxd5
- 2.Qb5#
- 1...Rxd5
- 2.Rc2#
- 1...Bxd5
- 2.Bxd6#
- 1...Sxd5
- 2.Sb3#
- 1...Sc6
- 2.Qxc6#
- threat
- 1.bxa6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(e);P_PINS(C),SBLOCK,XB(G)::R(B)
- B(a);SBLOCK,XB(G)::B(J),XP(g)
- S(i);SBLOCK,XB(G)::S(C)
- P(b);OGATE::QAR1(E)
- Tries
- Try
- B(G);XB(a)
- Threat
- DUALS(3)
- Vars
- Q(k);::B(J),XP(g)
- R(e);P_PINS(C)::R(B)
- Refutation
- R(e);P_PINS(C),XB(G)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(k);XR(I)::R(B)
- R(j);XB(J)::R(B)
- R(j);XS(L)::R(B)
- B(a);XS(L)::R(B)
- P(f);XP(F)::R(B)
- Q(k);::B(J),XP(g)
- R(e);P_PINS(C)::R(B)
- B(a);::B(J),XP(g)
- S(i);::R(B)
- Refutation
- S(i);
- Try
- B(G);
- Threat
- DUALS(3)
- Vars
- Q(k);::B(J),XP(g)
- R(e);P_PINS(C)::R(B)
- Refutation
- B(a);XB(G)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(k);XR(I)::S(C)
- R(j);XB(J)::S(C)
- R(j);XS(L)::S(C)
- B(a);XS(L)::S(C)
- P(f);OGATE,XP(F)::QAR1(E),XP(f)
- R(e);P_PINS(C)::B(J),XP(g)
- S(i);::S(C)
- Refutation
- R(e);P_PINS(C)
- Try
- B(G);
- Threat
- DUALS(3)
- Vars
- Q(k);::B(J),XP(g)
- R(e);P_PINS(C)::R(B)
- S(i);::S(C)
- Refutation
- B(a);XB(G)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(e);P_PINS(C)::R(B)
- S(i);::S(C)
- Refutation
- B(a);
- Try
- B(G);
- Threat
- DUALS(3)
- Vars
- R(e);P_PINS(C)::R(B)
- B(a);::B(J),XP(g)
- S(i);::S(C)
- Refutation
- Q(k);XB(G)
- Try
- Q(E);CHECK
- Vars
- K(d);P-FLIGHT,XP(F)::QAB1(E)
- Refutation
- K(d);P-FLIGHT,XB(G)
- Try
- Q(E);
- Threat
- QAR1(E)
- Vars
- K(d);P-FLIGHT,P_PINB(J),P_SPINP(b),XP(F)::QAB1(E)
- Refutation
- B(a);XB(G)
- Try
- Q(E);CHECK,XP(b)
- Vars
- K(d);OGATE,P-FLIGHT,P_PINB(J),XB(G)::QAR1(E),XP(g)
- Refutation
- K(d);P_PINB(J),S_FLIGHT,XQ(E)
- Try
- Actual
- P(F);XP(f)
- Threat
- QAR2(E)
- Vars
- K(d);P-FLIGHT,P_PINB(J),XB(G)::QAR2(E)
- R(e);P_PINS(C),SBLOCK,XB(G)::R(B)
- B(a);SBLOCK,XB(G)::B(J),XP(g)
- S(i);SBLOCK,XB(G)::S(C)
- S(i);N_GUARD::QAR1(E),XS(i)
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).