MESON Chess Problem Database
Problem Display
PID: 80572 (2r5/5B1p/8/Q4p2/R1b3pk/K6N/4pRPP/8 w - - 0 1)
Guida, Marco
1st Prize, L'Italia Scacchistica, 2002
#2
8 + 7
| 23 | Die Schwalbe | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Rc5
- 2.Qd8#
- 1...Rd8
- 2.Qxd8#
- 1...g3
- 2.Rf4#
- 1...f4
- 2.Qg5#
- 2.Qh5#
- 1...Rc5
- Tries
- 1.Rf4?
- threat
- 2.Qe1#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Bxf7!
- threat
- 1.Qe1?
- threat
- 2.Rf4#
- 1...Bxf7
- 2.Rxf5#
- 1...f4
- 2.Rxf4#
- 1...gxh3!
- threat
- 1.Qd2?
- threat
- 2.Qg5#
- 2.Qh6#
- 1...Bxf7
- 2.Qg5#
- 1...gxh3
- 2.Qf4#
- 1...g3
- 2.Rf4#
- 2.Qf4#
- 2.Qg5#
- 1...Rc6
- 2.Qg5#
- 1...Rg8
- 2.Qh6#
- 1...h5
- 2.Qg5#
- 1...h6
- 2.Qxh6#
- 1...f4!
- threat
- 1.Qc3?
- threat
- 2.Qf6#
- 2.Qg3#
- 1...gxh3
- 2.Qg3#
- 1...g3
- 2.Rf4#
- 2.Qxg3#
- 1...Rc6
- 2.Qg3#
- 1...Rg8
- 2.Qg3#
- 1...Bd3
- 2.Qf6#
- 1...f4
- 2.Qf6#
- 1...Bxf7!
- threat
- 1.Qe5?
- threat
- 2.Qg3#
- 2.Qf6#
- 2.Qe7#
- 1...gxh3
- 2.Qg3#
- 2.Qf4#
- 1...g3
- 2.Rf4#
- 2.Qxg3#
- 2.Qf4#
- 1...e1Q
- 2.Qg3#
- 2.Qf6#
- 1...e1R
- 2.Qg3#
- 2.Qf6#
- 1...Rc6
- 2.Qg3#
- 1...Rc7
- 2.Qg3#
- 2.Qf6#
- 1...Re8
- 2.Qg3#
- 2.Qf6#
- 1...Rg8
- 2.Qg3#
- 1...Be6
- 2.Qg3#
- 2.Qf6#
- 1...f4
- 2.Qf6#
- 2.Qg5#
- 2.Qh5#
- 2.Qe7#
- 1...Bxf7!
- threat
- 1.Qxf5?
- threat
- 2.Qxh7#
- 2.Qg5#
- 2.Qh5#
- 2.Qf6#
- 1...Bxf7
- 2.Rxg4#
- 2.Qxg4#
- 2.Qg5#
- 1...gxh3
- 2.Rf4#
- 2.Qf4#
- 2.Qh5#
- 2.g3#
- 1...Rc6
- 2.Qg5#
- 2.Qh5#
- 1...Rg8
- 2.Qxh7#
- 2.Qh5#
- 1...Rh8
- 2.Qg5#
- 2.Qh5#
- 2.Qf6#
- 1...Bd3
- 2.Rxg4#
- 2.Qxg4#
- 2.Qg5#
- 2.Qh5#
- 2.Qf6#
- 1...g3
- 2.Rf4#
- 2.Qe4#
- 2.Qf4#
- 2.Qg5#
- 2.Qh5#
- 1...h5
- 2.Qg5#
- 2.Qxh5#
- 2.Qf6#
- 1...h6
- 2.Qh5#
- 2.Qf6#
- 1...Rc5!
- threat
- 1.Rf4?
- Keys
- 1.Rxf5!
- threat
- 2.Rh5#
- 1...Bxf7
- 2.Qe1#
- 1...gxh3
- 2.Rf4#
- 1...g3
- 2.Rf4#
- 1...Rc5
- 2.Qd8#
- 1...h5
- 2.Rxh5#
- threat
- 1.Rxf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(g);N_GUARD::QAB(G)
- R(g);N_GUARD::QAB(G),XR(g)
- P(c);OGATEB,P_SPINB(b)::R(A)
- Tries
- Try
- R(A);P_PINP(c)
- Threat
- QAB(G)
- Vars
- P(a);::QAB(G),XQ(a)
- P(a);::QAB(G),XS(a)
- P(a);::QAB(G),XB(a)
- P(a);::QAB(G),XR(a)
- Refutation
- B(b);XB(H)
- Try
- Q(G);
- Threat
- QAB(G)+R(A)
- Vars
- B(b);P_SPINP(c),XB(H)::QAB(G)+R(A),XP(e)
- P(e);::QAB(G)+R(A),XP(e)
- Refutation
- P(c);P_SPINB(b),XS(E)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- B(b);P_SPINP(c),XB(H)::QAB1(G)
- P(c);OGATEB,P_SPINB(b),XS(E)::QAR2(G)
- R(g);::QAB1(G)
- R(g);::QAR2(G)
- P(f);::QAB1(G)
- P(f);::QAR2(G),XP(f)
- Refutation
- P(e);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- P(c);P_SPINB(b),XS(E)::QAB1(G)
- R(g);::QAB1(G)
- B(b);P_SPINP(c)::QAB(G)
- P(e);::QAB(G)
- Refutation
- B(b);P_SPINP(c),XB(H)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- R(g);::QAB1(G)
- Refutation
- B(b);P_SPINP(c),XB(H)
- Try
- Q(G);XP(e)
- Threat
- DUALS(4)
- Refutation
- R(g);
- Try
- Actual
- R(A);XP(e)
- Threat
- R1(A)
- Vars
- B(b);P_SPINP(c),XB(H)::QAB(G)
- P(c);OGATEB,P_SPINB(b),XS(E)::R(A)
- P(c);OGATEB,P_SPINB(b)::R(A)
- R(g);N_GUARD::QAB(G)
- P(f);::R1(A),XP(f)
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).