MESON Chess Problem Database
Problem Display
PID: 150942 (B2rr3/b1N2p2/1p1npK2/1Pk5/R3p1Qp/3Rp3/1P3Bn1/8 w - - 0 1)
Lacny, Ludovit
3rd Prize, Pat a Mat, 2008
#2
9 + 12
| 23 | Die Schwalbe | 2013 |
| 56 | The Problemist | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Se1
- 2.Bxe3#
- 1...Sf4
- 2.Bxe3#
- 1...Sc4
- 2.b4#
- 1...Sxb5
- 2.Sa6#
- 1...exd3
- 2.Qb4#
- 2.Qd4#
- 2.b4#
- 1...e5
- 2.Rd5#
- 1...Se1
- Tries
- 1.Rxe4?
- threat
- 2.Re5#
- 2.b4#
- 1...Sxb5
- 2.Sa6#
- 2.Rc4#
- 2.b4#
- 1...Sc4
- 2.Rxc4#
- 1...Sf4
- 2.Bxe3#
- 2.b4#
- 1...Sf5
- 2.Rc4#
- 2.b4#
- 1...Sb7
- 2.Rc4#
- 2.b4#
- 1...Sc8
- 2.Rc4#
- 2.b4#
- 1...e5
- 2.Rd5#
- 2.b4#
- 1...Sxe4+!
- threat
- 1.Qf5+?
- 1...exf5
- 2.Rd5#
- 1...e5
- 2.Rd5#
- 1...Sxf5!
- 1...exf5
- 1.Qh5+?
- 1...e5
- 2.Rd5#
- 1...Sf5!
- 1...e5
- 1.Qg3?
- threat
- 2.Qe5#
- 1...Sxb5
- 2.Sa6#
- 1...Sf4
- 2.Bxe3#
- 2.Qxe3#
- 1...Sc4
- 2.b4#
- 1...Sf5
- 2.Rc3#
- 1...Sb7
- 2.Rc3#
- 1...Sc8
- 2.Rc3#
- 1...e5
- 2.Rd5#
- 1...hxg3!
- threat
- 1.Qxe4?
- threat
- 2.Qc6#
- 2.Qb4#
- 2.Qd4#
- 2.Qe5#
- 2.b4#
- 1...Sxb5
- 2.Sa6#
- 2.Rc4#
- 2.Qc6#
- 2.Qb4#
- 2.Qc4#
- 2.b4#
- 1...Sf4
- 2.Bxe3#
- 2.Qc6#
- 2.Qxe3#
- 2.Qb4#
- 2.Qd4#
- 2.b4#
- 1...Sc4
- 2.Rxc4#
- 2.Qc6#
- 2.Qxc4#
- 2.b4#
- 1...Sf5
- 2.Rc4#
- 2.Qc6#
- 2.Qb4#
- 2.Qc4#
- 2.b4#
- 1...Sb7
- 2.Rc4#
- 2.Qc6#
- 2.Qb4#
- 2.Qc4#
- 2.b4#
- 1...Sc8
- 2.Rc4#
- 2.Qc6#
- 2.Qb4#
- 2.Qc4#
- 2.b4#
- 1...e5
- 2.Rd5#
- 2.Qd5#
- 2.Qc6#
- 2.Qb4#
- 2.b4#
- 1...Sxe4+!
- threat
- 1.Qg5+?
- 1...e5
- 2.Rd5#
- 1...Sf5!
- 1...e5
- 1.Rxe4?
- Keys
- 1.Qf4!
- threat
- 2.Qe5#
- 1...Sxf4
- 2.Bxe3#
- 1...Sxb5
- 2.Sa6#
- 1...Sc4
- 2.b4#
- 1...Sf5
- 2.Rc3#
- 1...Sb7
- 2.Rc3#
- 1...Sc8
- 2.Rc3#
- 1...e5
- 2.Rd5#
- threat
- 1.Qf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD::B(B),XP(b)
- S(g);SBLOCK::P(A)
- S(g);SBLOCK,XP(F)::S(H)
- P(h);N_GUARD::R1(C)
- Tries
- Try
- R(D);XP(c)
- Threat
- DUALS(2)
- Vars
- S(g);N_GUARD::R1(D),XS(g)
- Refutation
- S(g);CHECK,XR(D)
- Try
- Q(E);CHECK
- Vars
- P(h);N_GUARD,XQ(E)::R1(C)
- P(h);N_GUARD::R1(C)
- Refutation
- S(g);XQ(E)
- Try
- Q(E);CHECK
- Vars
- P(h);N_GUARD::R1(C)
- Refutation
- S(g);P_SPINS(g)
- Try
- Q(E);
- Threat
- QAR2(E)
- Vars
- S(g);SBLOCK,XP(F)::S(H)
- S(g);SBLOCK::P(A)
- S(g);N_GUARD::R(C)
- P(h);N_GUARD::R1(C)
- Refutation
- P(d);XQ(E)
- Try
- Q(E);XP(c)
- Threat
- DUALS(5)
- Refutation
- S(g);CHECK,XQ(E)
- Try
- Q(E);CHECK
- Vars
- P(h);N_GUARD::R1(C)
- Refutation
- S(g);P_SPINS(g)
- Try
- Actual
- Q(E);
- Threat
- QAR2(E)
- Vars
- S(a);N_GUARD,XQ(E)::B(B),XP(b)
- S(g);SBLOCK,XP(F)::S(H)
- S(g);SBLOCK::P(A)
- S(g);N_GUARD::R(C)
- P(h);N_GUARD::R1(C)
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).