MESON Chess Problem Database
Problem Display
PID: 206493 (8/N7/8/2Q5/kr6/1p6/1K6/8 w - - 0 1)
Lazard, Frederic
L'Eclaireur du Soir, 1925
#2
3 + 3
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.Qa3#
- 2.Qb5#
- 1...Rd4
- 2.Qa3#
- 2.Qb5#
- 1...Re4
- 2.Qa3#
- 2.Qb5#
- 1...Rf4
- 2.Qa3#
- 2.Qb5#
- 1...Rg4
- 2.Qa3#
- 2.Qb5#
- 1...Rh4
- 2.Qa3#
- 2.Qb5#
- 1...Rb5
- 2.Qa3#
- 2.Qxb5#
- 1...Rb6
- 2.Qa3#
- 1...Rb7
- 2.Qa3#
- 1...Rb8
- 2.Qa3#
- 1...Rc4
- Tries
- 1.Qb6?
- threat
- 2.Qa6#
- 1...Rb5
- 2.Qxb5#
- 1...Rc4
- 2.Qb5#
- 1...Rd4
- 2.Qb5#
- 1...Re4
- 2.Qb5#
- 1...Rf4
- 2.Qb5#
- 1...Rg4
- 2.Qb5#
- 1...Rh4
- 2.Qb5#
- 1...Rxb6!
- threat
- 1.Qd6?
- threat
- 2.Qa6#
- 1...Rc4
- 2.Qa3#
- 1...Rd4
- 2.Qa3#
- 1...Re4
- 2.Qa3#
- 1...Rf4
- 2.Qa3#
- 1...Rg4
- 2.Qa3#
- 1...Rh4
- 2.Qa3#
- 1...Rb5
- 2.Qa3#
- 1...Rb6
- 2.Qa3#
- 1...Rb7
- 2.Qa3#
- 1...Rb8
- 2.Qa3#
- 1...Ka5!
- threat
- 1.Qe7?
- 1...Rc4
- 2.Qa3#
- 1...Rd4
- 2.Qa3#
- 1...Re4
- 2.Qa3#
- 1...Rf4
- 2.Qa3#
- 1...Rg4
- 2.Qa3#
- 1...Rh4
- 2.Qa3#
- 1...Rb5
- 2.Qa3#
- 1...Rb6
- 2.Qa3#
- 1...Rb7
- 2.Qa3#
- 1...Rb8
- 2.Qa3#
- 1...Ka5!
- 1...Rc4
- 1.Qf8?
- 1...Rc4
- 2.Qa3#
- 1...Rd4
- 2.Qa3#
- 1...Re4
- 2.Qa3#
- 1...Rf4
- 2.Qa3#
- 1...Rg4
- 2.Qa3#
- 1...Rh4
- 2.Qa3#
- 1...Rb5
- 2.Qa3#
- 1...Rb6
- 2.Qa3#
- 1...Rb7
- 2.Qa3#
- 1...Rb8
- 2.Qa3#
- 1...Ka5!
- 1...Rc4
- 1.Qc6+?
- 1...Rb5
- 2.Qxb5#
- 1...Ka5!
- 1...Rb5
- 1.Qb6?
- Keys
- 1.Sc6!
- threat
- 2.Qxb4#
- 2.Qa5#
- 1...Rc4
- 2.Qxc4#
- 2.Qa5#
- 1...Rd4
- 2.Qa5#
- 1...Re4
- 2.Qa5#
- 1...Rf4
- 2.Qa5#
- 1...Rg4
- 2.Qa5#
- 1...Rh4
- 2.Qa5#
- 1...Rb5
- 2.Qa3#
- 1...Rb6
- 2.Qa5#
- 1...Rb7
- 2.Qa5#
- 1...Rb8
- 2.Qa5#
- threat
- 1.Sc6!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 3
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- R(c);OGATE::QAR1(B)
- Tries
- Try
- Q(B);
- Threat
- QAR2(B)
- Vars
- R(c);N_GUARD::QAB1(B),XR(c)
- R(c);N_GUARD::QAB1(B)
- R(c);N_GUARD,SBLOCK::QAB1(B)
- Refutation
- R(c);XQ(B)
- Try
- Q(B);
- Threat
- QAR2(B)
- Vars
- R(c);OGATE::QAR1(B)
- R(c);OGATE,SBLOCK::QAR1(B)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(B);
- Vars
- R(c);OGATE::QAR1(B)
- R(c);OGATE,SBLOCK::QAR1(B)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(B);
- Vars
- R(c);OGATE::QAR1(B)
- R(c);OGATE,SBLOCK::QAR1(B)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(B);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::QAB1(B),XR(c)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- S(C);
- Threat
- DUALS(2)
- Vars
- R(c);::QAR1(B)
- R(c);SBLOCK::QAR1(B)
- R(c);OGATE,SBLOCK::QAR1(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).