MESON Chess Problem Database
Problem Display
PID: 262346 (K1R5/3k4/1P3r2/8/2Q5/B7/8/8 w - - 0 1)
Novis Filho, Mario
Europe Echecs, 1959
#2
5 + 2
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Qc6#
- 1...Rf2
- 2.Qc6#
- 1...Rf3
- 2.Qc6#
- 1...Rf4
- 2.Qc6#
- 1...Rf5
- 2.Qc6#
- 1...Rc6
- 2.Qxc6#
- 1...Re6
- 2.Qc7#
- 1...Rf7
- 2.Qc6#
- 1...Rf8
- 2.Qc6#
- 1...Rf1
- Tries
- 1.Kb7?
- 1...Rd6
- 2.Qf7#
- 1...Rf1
- 2.Qd5#
- 2.Qc6#
- 1...Rf2
- 2.Qd5#
- 2.Qc6#
- 1...Rf3
- 2.Qd5#
- 2.Qc6#
- 1...Rf4
- 2.Qd5#
- 2.Qc6#
- 1...Rf5
- 2.Qc6#
- 1...Rc6
- 2.Qf7#
- 2.Qxc6#
- 1...Re6
- 2.Qc7#
- 1...Rg6
- 2.Qf7#
- 1...Rh6
- 2.Qf7#
- 1...Rf7
- 2.Qd5#
- 2.Qxf7#
- 2.Qc6#
- 1...Rf8
- 2.Qd5#
- 2.Qc6#
- 1...Rxb6+!
- 1...Rd6
- 1.Kb8?
- 1...Rd6
- 2.Qf7#
- 1...Rf1
- 2.Qd5#
- 2.Qc6#
- 1...Rf2
- 2.Qd5#
- 2.Qc6#
- 1...Rf3
- 2.Qd5#
- 2.Qc6#
- 1...Rf4
- 2.Qd5#
- 2.Qc6#
- 1...Rf5
- 2.Qc6#
- 1...Rc6
- 2.Qf7#
- 2.Qxc6#
- 1...Re6
- 2.Qc7#
- 1...Rg6
- 2.Qf7#
- 1...Rh6
- 2.Qf7#
- 1...Rf7
- 2.Qd5#
- 2.Qxf7#
- 2.Qc6#
- 1...Rf8
- 2.Qd5#
- 2.Qc6#
- 1...Rxb6+!
- 1...Rd6
- 1.Rb8?
- threat
- 2.Qc8#
- 1...Rc6
- 2.Qf7#
- 1...Rf8
- 2.Qd5#
- 1...Rd6!
- threat
- 1.Re8?
- threat
- 2.Qc8#
- 1...Rc6
- 2.Qf7#
- 1...Kxe8!
- threat
- 1.Qb5+?
- 1...Kxc8
- 2.Qe8#
- 1...Rc6
- 2.Qxc6#
- 1...Ke6!
- 1...Kxc8
- 1.Qf7+?
- 1...Kxc8
- 2.Qe8#
- 2.Qc7#
- 1...Rxf7!
- 1...Kxc8
- 1.Qg8?
- threat
- 2.Rc7#
- 2.Qe8#
- 1...Rxb6
- 2.Qe8#
- 1...Rf7
- 2.Qe8#
- 1...Rc6
- 2.Rd8#
- 2.Qe8#
- 1...Re6
- 2.Rc7#
- 2.Qd8#
- 1...Rf8!
- threat
- 1.Qa4+?
- 1...Kxc8
- 2.Qe8#
- 1...Rc6
- 2.Qxc6#
- 1...Ke6!
- 1...Kxc8
- 1.Qg4+?
- 1...Rf5
- 2.Qxf5#
- 1...Re6!
- 1...Rf5
- 1.b7?
- threat
- 2.b8S#
- 1...Rd6
- 2.Qf7#
- 1...Rb6
- 2.Qf7#
- 1...Rc6
- 2.Qf7#
- 2.Qxc6#
- 1...Ra6+!
- threat
- 1.Kb7?
- Keys
- 1.Qe4!
- threat
- 2.Qe8#
- 1...Kxc8
- 2.Qe8#
- 1...Re6
- 2.Qb7#
- 1...Rf8
- 2.Qc6#
- threat
- 1.Qe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD::QAB1(B)
- R(a);N_GUARD::QAB1(B),XR(a)
- R(a);SBLOCK::QAR1(B)
- R(a);N_GUARD,P_PINR(E)::QAB1(B)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- R(a);N_GUARD::QAR2(B)
- R(a);N_GUARD::QAB1(B)
- R(a);SBLOCK::QAR1(B)
- Refutation
- R(a);CHECK,XP(C)
- Try
- K(D);P-FLIGHT
- Vars
- R(a);N_GUARD::QAR2(B)
- R(a);N_GUARD::QAB1(B)
- R(a);SBLOCK::QAR1(B)
- Refutation
- R(a);CHECK,XP(C)
- Try
- R(E);
- Threat
- QAB1(B)
- Vars
- R(a);N_GUARD,SBLOCK::QAR2(B)
- R(a);N_GUARD,P_PINR(E)::QAR2(B)
- Refutation
- R(a);
- Try
- R(E);
- Threat
- QAB1(B)
- Vars
- R(a);N_GUARD,SBLOCK::QAR2(B)
- Refutation
- K(b);S_FLIGHT,XR(E)
- Try
- Q(B);CHECK
- Vars
- K(b);OGATE,S_FLIGHT,XR(E)::QAR2(B)
- R(a);N_GUARD,P_SPINR(a)::QAB1(B),XR(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(B);CHECK
- Refutation
- R(a);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(a);XP(C)::QAB1(B)
- R(a);::QAB1(B)
- Refutation
- R(a);P_PINR(E)
- Try
- Q(B);CHECK
- Vars
- K(b);OGATE,S_FLIGHT,XR(E)::QAR2(B)
- R(a);N_GUARD,P_SPINR(a)::QAB1(B),XR(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(B);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAB(B),XR(a)
- Refutation
- R(a);P_SPINR(a)
- Try
- P(C);
- Threat
- P=S
- Vars
- R(a);N_GUARD::QAR2(B)
- Refutation
- R(a);CHECK
- Try
- Actual
- Q(B);
- Threat
- QAB1(B)
- Vars
- K(b);S_FLIGHT,XR(E)::QAR2(B)
- R(a);SBLOCK::QAR2(B)
- R(a);N_GUARD,P_PINR(E)::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).