MESON Chess Problem Database
Problem Display
PID: 207233 (8/4R3/p2r1rqB/pbR5/n2k1N2/3p1P2/3P4/K1Q5 w - - 0 1)
Sprega, Luigi
La Strategie, 1869
#2
8 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Rxe4#
- 1...Qf5
- 2.Qg1#
- 1...Qh5
- 2.Re4#
- 2.Qg1#
- 1...Qf7
- 2.Re4#
- 2.Qg1#
- 1...Qh7
- 2.Qg1#
- 1...Qe8
- 2.Qg1#
- 1...Qg1
- 2.Re4#
- 2.Qxg1#
- 1...Qg2
- 2.Re4#
- 1...Qg3
- 2.Re4#
- 1...Qg4
- 2.Re4#
- 1...Qg5
- 2.Re4#
- 1...Qxh6
- 2.Re4#
- 2.Qg1#
- 1...Qg7
- 2.Re4#
- 1...Qg8
- 2.Re4#
- 1...Rd5
- 2.Rxd5#
- 1...Rb6
- 2.Rd5#
- 1...Rc6
- 2.Rd5#
- 1...Rde6
- 2.Rd5#
- 1...Rf5
- 2.Re4#
- 1...Bc4
- 2.Rxc4#
- 2.Qxc4#
- 1...Bc6
- 2.Rc4#
- 2.Qc4#
- 1...Bd7
- 2.Rc4#
- 2.Qc4#
- 1...Be8
- 2.Rc4#
- 2.Qc4#
- 1...Sb2
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sxc5
- 2.Qc3#
- 1...Sb6
- 2.Qc3#
- 1...Qe4
- Tries
- 1.Bg5?
- threat
- 2.Qg1#
- 1...Qxg5
- 2.Re4#
- 1...Sxc5
- 2.Qc3#
- 1...Qe4
- 2.Rxe4#
- 1...Rde6
- 2.Rd5#
- 1...Rfe6!
- threat
- 1.Bg5?
- Keys
- 1.Bg7!
- 1...Qxg7
- 2.Re4#
- 1...Sxc5
- 2.Qc3#
- 1...Bc4
- 2.Rxc4#
- 2.Qxc4#
- 1...Sc3
- 2.Qxc3#
- 1...Qe4
- 2.Rxe4#
- 1...Qf5
- 2.Qg1#
- 1...Qh5
- 2.Re4#
- 2.Qg1#
- 1...Qf7
- 2.Re4#
- 2.Qg1#
- 1...Qh7
- 2.Qg1#
- 1...Qe8
- 2.Qg1#
- 1...Qg1
- 2.Re4#
- 2.Qxg1#
- 1...Qg2
- 2.Re4#
- 1...Qg3
- 2.Re4#
- 1...Qg4
- 2.Re4#
- 1...Qg5
- 2.Re4#
- 1...Qh6
- 2.Re4#
- 2.Qg1#
- 1...Rd5
- 2.Rxd5#
- 1...Rb6
- 2.Rd5#
- 1...Rc6
- 2.Rd5#
- 1...Re6
- 2.Sxe6#
- 2.Rd5#
- 1...Rd7
- 2.Se6#
- 1...Rd8
- 2.Se6#
- 1...Bc6
- 2.Rc4#
- 2.Qc4#
- 1...Bd7
- 2.Rc4#
- 2.Qc4#
- 1...Be8
- 2.Rc4#
- 2.Qc4#
- 1...Sb2
- 2.Qc3#
- 1...Sb6
- 2.Qc3#
- 1...Qxg7
- 1.Bg7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(i);N_GUARD::R1(H),XQ(i)
- Q(i);N_GUARD::QAB(B)
- Q(i);N_GUARD::R1(H)
- R(g);N_GUARD::R1(F),XR(g)
- R(g);N_GUARD::R1(F)
- R(h);S_CUTQ(i)::R1(H)
- S(b);N_GUARD::QAB1(B)
- S(b);N_GUARD::QAB1(B),XS(b)
- S(b);N_GUARD,XR(F)::QAB1(B)
- Tries
- Try
- B(G);
- Threat
- QAB(B)
- Vars
- Q(i);N_GUARD,XB(G)::R1(H)
- S(b);N_GUARD,XR(F)::QAB1(B)
- Q(i);N_GUARD::R1(H),XQ(i)
- R(g);N_GUARD::R1(F)
- Refutation
- R(h);
- Try
- Actual
- B(G);P_PINR(h)
- Vars
- Q(i);N_GUARD,N_SPINR(h),XB(G)::R1(H)
- S(b);N_GUARD,XR(F)::QAB1(B)
- S(b);N_GUARD::QAB1(B),XS(b)
- Q(i);N_GUARD::R1(H),XQ(i)
- Q(i);N_GUARD::QAB(B)
- Q(i);N_GUARD::R1(H)
- R(g);N_GUARD::R1(F),XR(g)
- R(g);N_GUARD::R1(F)
- R(g);N_GUARD::S(E)
- S(b);N_GUARD::QAB1(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).