MESON Chess Problem Database
Problem Display
PID: 199407 (8/5Q1B/8/2p5/6pN/Rq2p3/b3k1p1/1nR1B1K1 w - - 0 1)
Burda, Josef
Sachova skladba, 2004
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.Bd3#
- 1...Qe6
- 2.Bd3#
- 1...Qxf7
- 2.Bd3#
- 1...Qb2
- 2.Bd3#
- 1...Qd3
- 2.Bxd3#
- 1...Qb4
- 2.Bd3#
- 1...Qb6
- 2.Bd3#
- 1...Qb7
- 2.Bd3#
- 1...Qb8
- 2.Bd3#
- 1...g3
- 2.Qh5#
- 2.Qf3#
- 1...Qa4
- Tries
- 1.Sxg2?
- threat
- 2.Qf1#
- 1...Qxf7
- 2.Rxe3#
- 1...Sd2!
- threat
- 1.Bd3+?
- 1...Kxd3
- 2.Qc4#
- 1...Qxd3!
- 1...Kxd3
- 1.Rxb3?
- threat
- 2.Bd3#
- 2.Qc4#
- 1...Sd2
- 2.Bd3#
- 1...Sa3
- 2.Bd3#
- 1...Sc3
- 2.Rb2#
- 2.Qc4#
- 1...c4
- 2.Qxc4#
- 1...Bxb3!
- threat
- 1.Qxb3?
- threat
- 2.Bd3#
- 2.Qd1#
- 2.Qd3#
- 2.Qxe3#
- 1...Sxa3
- 2.Bd3#
- 2.Qd1#
- 2.Qd3#
- 1...Sc3
- 2.Qc2#
- 2.Qb2#
- 1...c4
- 2.Qd1#
- 2.Qxe3#
- 1...Bxb3!
- threat
- 1.Qc4+?
- 1...Qd3
- 2.Bxd3#
- 2.Qxd3#
- 2.Qxg4#
- 1...Qxc4!
- 1...Qd3
- 1.Qd5?
- threat
- 2.Qxg2#
- 1...Qd1
- 2.Qxd1#
- 1...Qb7
- 2.Bd3#
- 2.Qd1#
- 2.Qd3#
- 1...Qxd5!
- threat
- 1.Qe6?
- threat
- 2.Qxg4#
- 1...Qxe6
- 2.Bd3#
- 1...Qd1
- 2.Rxe3#
- 2.Qxe3#
- 1...Qa4
- 2.Bd3#
- 2.Rxe3#
- 2.Qxe3#
- 1...Qc4
- 2.Rxe3#
- 2.Qxe3#
- 1...Qd5
- 2.Rxe3#
- 2.Qxe3#
- 1...Qb4
- 2.Bd3#
- 2.Rxe3#
- 2.Qxe3#
- 1...Qb7
- 2.Bd3#
- 2.Rxe3#
- 2.Qxe3#
- 1...g3
- 2.Qg4#
- 1...Sd2!
- threat
- 1.Qf4?
- threat
- 2.Qxg4#
- 1...Qd1
- 2.Rxe3#
- 2.Qxe3#
- 1...Qa4
- 2.Bd3#
- 2.Rxe3#
- 2.Qxe3#
- 1...Qc4
- 2.Rxe3#
- 2.Qxe3#
- 1...Qd5
- 2.Rxe3#
- 2.Qxe3#
- 1...Qe6
- 2.Bd3#
- 1...Qf7
- 2.Bd3#
- 2.Rxe3#
- 2.Qxe3#
- 1...Qg8
- 2.Bd3#
- 2.Rxe3#
- 2.Qxe3#
- 1...Qb4
- 2.Bd3#
- 2.Rxe3#
- 2.Qxe3#
- 1...Qb7
- 2.Bd3#
- 2.Rxe3#
- 2.Qxe3#
- 1...g3
- 2.Qf3#
- 2.Qg4#
- 1...Sd2!
- threat
- 1.Sxg2?
- Keys
- 1.Sf5!
- threat
- 2.Sg3#
- 1...Kd3
- 2.Qc4#
- 1...Kf3
- 2.Sd4#
- 1...Qxf7
- 2.Rxe3#
- 1...Qd1
- 2.Rxe3#
- 1...Qb8
- 2.Rxe3#
- 1...g3
- 2.Sxg3#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- Q(e);N_GUARD::B(G)
- Q(e);N_GUARD,XQ(F)::B(G)
- Q(e);N_GUARD::B(G),XQ(e)
- Tries
- Try
- S(E);XP(d)
- Threat
- QAB1(F)
- Vars
- Q(e);OGATE,XQ(F)::R1(D),XP(f)
- Refutation
- S(a);
- Try
- B(G);CHECK
- Vars
- K(c);P_SPINQ(e),S_FLIGHT,XB(G)::QAB1(F)
- Refutation
- Q(e);XB(G)
- Try
- R(D);XQ(e)
- Threat
- DUALS(2)
- Vars
- S(a);::B(G)
- P(h);::QAB(F),XP(h)
- Refutation
- B(b);XR(D)
- Try
- Q(F);XQ(e)
- Threat
- DUALS(4)
- Refutation
- B(b);XQ(F)
- Try
- Q(F);CHECK
- Refutation
- Q(e);XQ(F)
- Try
- Q(F);
- Threat
- QAR2(F),XP(d)
- Vars
- Q(e);N_GUARD,P_PINB(B)::QAB1(F),XQ(e)
- Refutation
- Q(e);XQ(F)
- Try
- Q(F);P_PINP(f)
- Threat
- QAB(F),XP(g)
- Vars
- Q(e);N_GUARD,N_SPINP(f),XQ(F)::B(G)
- P(g);::QAB(F)
- Refutation
- S(a);
- Try
- Q(F);
- Threat
- QAB(F),XP(g)
- Vars
- Q(e);N_GUARD::B(G)
- Refutation
- S(a);
- Try
- Actual
- S(E);
- Threat
- S(E)
- Vars
- K(c);P_SPINQ(e),S_FLIGHT::QAB1(F)
- K(c);S_FLIGHT::QAR(F)+S(E),DCHECK
- Q(e);OGATE,XQ(F)::R1(D),XP(f)
- Q(e);OGATE,P_PINB(B)::R1(D),XP(f)
- Q(e);OGATE::R1(D),XP(f)
- P(g);::S(E),XP(g)
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).