MESON Chess Problem Database
Problem Display
PID: 243537 (5QK1/1pR1N3/1p1NP1P1/4RP2/1k1B3n/p7/2Bb4/5q2 w - - 0 1)
Burda, Josef
Sachove umeni (Ceskoslovensky sach), 2005
#2
11 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Rb5#
- 2.Rc4#
- 1...Qh3
- 2.Rb5#
- 2.Rc4#
- 1...Qc4
- 2.Rxc4#
- 1...Qb5
- 2.Rxb5#
- 1...Qa1
- 2.Rb5#
- 2.Rc4#
- 1...Qb1
- 2.Rb5#
- 2.Rc4#
- 1...Qc1
- 2.Rb5#
- 2.Rc4#
- 1...Qd1
- 2.Rb5#
- 2.Rc4#
- 1...Qe1
- 2.Rb5#
- 2.Rc4#
- 1...Qg1
- 2.Rb5#
- 2.Rc4#
- 1...Qh1
- 2.Rb5#
- 2.Rc4#
- 1...Qf2
- 2.Rb5#
- 2.Rc4#
- 1...Qf3
- 2.Rb5#
- 2.Rc4#
- 1...Qf4
- 2.Rb5#
- 2.Rc4#
- 1...Qxf5
- 2.Rc4#
- 1...Bc1
- 2.Bc3#
- 1...Bc3
- 2.Bxc3#
- 1...Be3
- 2.Bc3#
- 1...Bf4
- 2.Bc3#
- 1...Bg5
- 2.Bc3#
- 1...Bh6
- 2.Bc3#
- 1...Qg2
- Tries
- 1.Sec8?
- threat
- 2.Sc4#
- 2.Se4#
- 2.Sxb7#
- 2.Sf7#
- 2.Se8#
- 1...Qxf5
- 2.Sxf5#
- 2.Sf7#
- 2.Rc4#
- 1...Sxf5
- 2.Sxf5#
- 1...Qb5
- 2.Rxb5#
- 1...b5
- 2.Sc4#
- 2.Sxb7#
- 1...Qc4
- 2.Sxc4#
- 2.Rxc4#
- 1...Bg5
- 2.Bc3#
- 1...Bh6
- 2.Bc3#
- 1...Sxg6!
- threat
- 1.Bxb6?
- threat
- 2.Sd5#
- 2.Ba5#
- 1...Qc4
- 2.Ba5#
- 2.Rxc4#
- 1...Qg2
- 2.Ba5#
- 2.Rb5#
- 2.Rc4#
- 1...Qd3
- 2.Ba5#
- 1...Qb5
- 2.Rxb5#
- 1...Qa6
- 2.Sd5#
- 1...Qh1
- 2.Ba5#
- 2.Rb5#
- 2.Rc4#
- 1...Qf3
- 2.Ba5#
- 2.Rb5#
- 2.Rc4#
- 1...a2!
- threat
- 1.Qa8?
- threat
- 2.Sd5#
- 2.Qa4#
- 1...Qg2
- 2.Rb5#
- 2.Rc4#
- 2.Qa4#
- 1...Qc4
- 2.Rxc4#
- 2.Qa4#
- 1...Qb5
- 2.Rxb5#
- 1...Qh1
- 2.Rb5#
- 2.Rc4#
- 2.Qa4#
- 1...Qf3
- 2.Rb5#
- 2.Rc4#
- 2.Qa4#
- 1...b5
- 2.Sd5#
- 1...Qa6!
- threat
- 1.Sec8?
- Keys
- 1.Sxb7!
- threat
- 2.Sc8#
- 1...Qxf5
- 2.Sxf5#
- 1...Sxf5
- 2.Sxf5#
- 1...Sxg6
- 2.Sxg6#
- 1...Qc4
- 2.Sc6#
- 1...Qb5
- 2.Sd5#
- 1...Bg5
- 2.Bc3#
- 1...Bh6
- 2.Bc3#
- threat
- 1.Sxb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(a);N_GUARD,P_PINP(F)::R1(H),XQ(a)
- Q(a);N_GUARD::R1(C),XQ(a)
- Q(a);N_GUARD,XP(D)::R1(H)
- B(b);N_GUARD::B(B)
- B(b);N_GUARD::B(B),XB(b)
- Tries
- Try
- S(I);
- Threat
- DUALS(5)
- Vars
- S(e);XP(D)::QAB(J)+S(E),XS(e)
- Q(a);N_GUARD::R1(C),XQ(a)
- B(b);N_GUARD::B(B)
- Refutation
- S(e);XP(G)
- Try
- B(B);XP(f)
- Threat
- DUALS(2)
- Vars
- Q(a);::B(B)
- Q(a);N_GUARD::R1(C),XQ(a)
- Q(a);::S(I)
- Refutation
- P(c);
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD::R1(C),XQ(a)
- P(f);::S(I)
- Refutation
- Q(a);
- Try
- Actual
- S(E);XP(g)
- Threat
- QAB(J)+S(I)
- Vars
- Q(a);XP(D)::QAB(J)+S(I),XQ(a)
- S(e);XP(D)::QAB(J)+S(I),XS(e)
- S(e);XP(G)::QAB(J)+S(I),XS(e)
- Q(a);P_PINP(F),SBLOCK::QAB(J)+S(I),DCHECK
- Q(a);SBLOCK::QAB(J)+S(I),DCHECK
- B(b);N_GUARD::B(B)
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).