MESON Chess Problem Database
Problem Display
PID: 93725 (8/B6p/1QK5/7N/2N1k1P1/r6R/1b2P1n1/8 w - - 0 1)
Bosak, Juraj
Sachove umeni (Ceskoslovensky sach), 1952
#2
8 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.Qd4#
- 1...Rd3
- 2.exd3#
- 1...Bc1
- 2.Qd4#
- 1...Bc3
- 2.Qb1#
- 1...Bd4
- 2.Qxd4#
- 1...Be5
- 2.Sd2#
- 1...Rc3
- Tries
- 1.Kd6?
- threat
- 2.Sd2#
- 2.Qc6#
- 2.Qb7#
- 1...Rd3+
- 2.exd3#
- 1...Rxa7
- 2.Sd2#
- 1...Rb3
- 2.Sd2#
- 2.Qc6#
- 1...Ra5
- 2.Sd2#
- 1...Ra6
- 2.Sd2#
- 1...Bc1
- 2.Qd4#
- 2.Qc6#
- 2.Qb7#
- 1...Bc3
- 2.Qb1#
- 2.Qc6#
- 2.Qb7#
- 1...Se3
- 2.Sd2#
- 1...Sf4
- 2.Sd2#
- 1...Be5+!
- threat
- 1.Rxa3?
- 1...Bxa3
- 2.Qd4#
- 2.Qb1#
- 1...Ba1
- 2.Qb1#
- 1...Bc1
- 2.Qd4#
- 2.Qb1#
- 1...Bc3
- 2.Qb1#
- 1...Bd4
- 2.Qxd4#
- 2.Qb1#
- 1...Be5
- 2.Sd2#
- 2.Qb1#
- 1...Bf6
- 2.Qb1#
- 1...Bg7
- 2.Qb1#
- 1...Bh8
- 2.Qb1#
- 1...Se1
- 2.Re3#
- 2.Qe3#
- 1...Se3
- 2.Rxe3#
- 2.Qxe3#
- 1...Sf4
- 2.Sg3#
- 2.Re3#
- 2.Qe3#
- 1...Sh4
- 2.Re3#
- 2.Qe3#
- 1...h6!
- 1...Bxa3
- 1.Rf3?
- threat
- 2.Sg3#
- 1...Be5
- 2.Sd2#
- 1...Rxf3!
- threat
- 1.Qf2?
- threat
- 2.Qf5#
- 1...Rxa7
- 2.Sg3#
- 1...Rf3
- 2.Qxf3#
- 1...Ra5
- 2.Sg3#
- 2.Qxg2#
- 2.Qf3#
- 1...Se3
- 2.Sg3#
- 2.Qf3#
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sh4
- 2.Qf4#
- 1...Ra6+!
- threat
- 1.Qa5?
- threat
- 2.Sd2#
- 2.Sd6#
- 2.Qd5#
- 2.Qf5#
- 1...Rc3
- 2.Qd5#
- 2.Qe5#
- 2.Qf5#
- 1...Rd3
- 2.Qf5#
- 2.exd3#
- 1...Rf3
- 2.Sd2#
- 2.Sd6#
- 2.Qd5#
- 1...Bc1
- 2.Sd6#
- 2.Qd5#
- 2.Qe5#
- 2.Qf5#
- 1...Bc3
- 2.Sd6#
- 2.Qd5#
- 2.Qf5#
- 1...Be5
- 2.Sd2#
- 2.Qd5#
- 2.Qxe5#
- 1...Se3
- 2.Sd2#
- 2.Sd6#
- 1...Sf4
- 2.Sd2#
- 2.Sd6#
- 2.Qf5#
- 1...Sh4
- 2.Sd2#
- 2.Sd6#
- 2.Qd5#
- 1...Rxa5!
- threat
- 1.Qc5?
- threat
- 2.Sd2#
- 2.Sd6#
- 2.Qd5#
- 2.Qf5#
- 1...Rxa7
- 2.Sd2#
- 2.Sd6#
- 2.Qd5#
- 1...Rd3
- 2.Qf5#
- 2.exd3#
- 1...Rf3
- 2.Sd2#
- 2.Sd6#
- 2.Qd5#
- 1...Ra5
- 2.Sd2#
- 2.Sd6#
- 1...Bc1
- 2.Sd6#
- 2.Qd4#
- 2.Qe7#
- 2.Qd5#
- 2.Qe5#
- 2.Qf5#
- 1...Bc3
- 2.Sd6#
- 2.Qd5#
- 2.Qf5#
- 1...Be5
- 2.Sd2#
- 2.Qd5#
- 2.Qxe5#
- 1...Se3
- 2.Sd2#
- 2.Sd6#
- 1...Sf4
- 2.Sd2#
- 2.Sd6#
- 2.Qf5#
- 1...Sh4
- 2.Sd2#
- 2.Sd6#
- 2.Qd5#
- 1...Ra6+!
- threat
- 1.Qb5?
- threat
- 2.Sd2#
- 2.Sd6#
- 2.Qd5#
- 2.Qf5#
- 1...Rxa7
- 2.Qd5#
- 1...Rc3
- 2.Qd5#
- 2.Qe5#
- 2.Qf5#
- 1...Rd3
- 2.Qf5#
- 2.exd3#
- 1...Rf3
- 2.Sd2#
- 2.Sd6#
- 2.Qd5#
- 1...Ra5
- 2.Sd2#
- 2.Sd6#
- 1...Bc1
- 2.Sd6#
- 2.Qd5#
- 2.Qe5#
- 2.Qf5#
- 1...Bc3
- 2.Sd6#
- 2.Qb1#
- 2.Qd5#
- 2.Qf5#
- 1...Be5
- 2.Sd2#
- 2.Qd5#
- 2.Qxe5#
- 1...Se3
- 2.Sd2#
- 2.Sd6#
- 1...Sf4
- 2.Sd2#
- 2.Sd6#
- 2.Qf5#
- 1...Sh4
- 2.Sd2#
- 2.Sd6#
- 2.Qd5#
- 1...Ra6+!
- threat
- 1.Kd6?
- Keys
- 1.Bb8!
- threat
- 2.Sd2#
- 1...Rc3
- 2.Sf6#
- 1...Rd3
- 2.exd3#
- 1...Bc1
- 2.Sf6#
- 1...Bc3
- 2.Sg3#
- threat
- 1.Bb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- R(c);P_PINS(C),S_CUTB(a)::QAR1(F)
- R(c);OGATE::P(A),XR(c)
- B(a);N_GUARD::QAR1(F)
- B(a);OGATE::QAB(F)
- B(a);N_GUARD::QAR1(F),XB(a)
- B(a);SBLOCK::S(C)
- Tries
- Try
- K(G);P-FLIGHT
- Threat
- DUALS(3)
- Vars
- R(c);CHECK,OGATE::P(A),XR(c)
- R(c);XB(H)::S(C)
- R(c);::S(C)
- R(c);P_PINQ(F)::S(C)
- S(b);::S(C)
- Refutation
- B(a);CHECK
- Try
- R(B);XR(c)
- Vars
- B(a);OGATE::QAB(F)
- Refutation
- P(e);
- Try
- R(B);
- Threat
- S(E)
- Vars
- B(a);SBLOCK::S(C)
- Refutation
- R(c);XR(B)
- Try
- Q(F);
- Threat
- QAB1(F)
- Vars
- R(c);N_GUARD,XB(H)::S(E)
- R(c);N_GUARD::QAB1(F),XR(c)
- S(b);N_GUARD::QAR1(F),XS(b)
- S(b);N_GUARD::QAR1(F)
- Refutation
- R(c);CHECK
- Try
- Q(F);
- Threat
- DUALS(4)
- Refutation
- R(c);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(4)
- Refutation
- R(c);CHECK
- Try
- Q(F);
- Threat
- DUALS(4)
- Vars
- R(c);XB(H)::QAB1(F)
- Refutation
- R(c);CHECK
- Try
- Actual
- B(H);
- Threat
- S(C)
- Vars
- R(c);P_PINS(C),S_CUTB(a)::S(E)
- R(c);OGATE::P(A),XR(c)
- B(a);N_GUARD::S(E)
- B(a);S_CUTR(c)::S(E)
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).