MESON Chess Problem Database
Problem Display
PID: 96664 (1R1R2nK/2k4p/5pr1/2p5/2P1B2Q/3N4/6p1/5q2 w - - 0 1)
Riczu, Lajos
Problemas, 1969
#2
7 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe2
- 2.Qf4#
- 1...Qb1
- 2.Qf4#
- 1...Qd1
- 2.Qf4#
- 1...Qe1
- 2.Qf4#
- 1...Qg1
- 2.Qf4#
- 1...Qh1
- 2.Qf4#
- 1...Qf4
- 2.Qxf4#
- 1...f5
- 2.Rb7#
- 1...Qe2
- Tries
- 1.Sf4?
- threat
- 2.Se6#
- 1...Qxf4
- 2.Qxf4#
- 1...f5
- 2.Rb7#
- 1...Qxc4!
- threat
- 1.Qg3+?
- 1...Qf4
- 2.Qxf4#
- 1...Rxg3!
- 1...Qf4
- 1.Qh2+?
- 1...Qf4
- 2.Qxf4#
- 1...Rg3!
- 1...Qf4
- 1.Qxh7+?
- 1...Se7
- 2.Qxe7#
- 1...Rg7!
- 1...Se7
- 1.Sf4?
- Keys
- 1.Sxc5!
- threat
- 2.Sa6#
- 2.Se6#
- 1...Qxc4
- 2.Qf4#
- 1...Qa1
- 2.Se6#
- 1...Qf5
- 2.Sa6#
- 1...f5
- 2.Rb7#
- threat
- 1.Sxc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD::QAB(D)
- Q(a);N_GUARD::QAB(D),XQ(a)
- P(d);::R1(E)
- Tries
- Try
- S(A);
- Threat
- S(A)
- Vars
- Q(a);OGATE,XS(A)::QAB(D),XQ(a)
- P(d);::R1(E)
- Refutation
- Q(a);XP(B)
- Try
- Q(D);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::QAB(D),XQ(a)
- Refutation
- R(e);XQ(D)
- Try
- Q(D);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::QAB(D),XQ(a)
- Refutation
- R(e);P_SPINR(e)
- Try
- Q(D);CHECK,XP(g)
- Vars
- S(h);N_GUARD,P_SPINS(h)::QAR2(D),XS(h)
- Refutation
- R(e);P_SPINR(e)
- Try
- Actual
- S(A);XP(c)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XP(B)::QAB(D)
- Q(a);::S(A)
- P(d);::R1(E)
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).