MESON Chess Problem Database
Problem Display
PID: 158430 (B7/KN6/1R1p4/pN6/2k5/2PRpn2/r6q/B2Q4 w - - 0 1)
Apro, Laszlo
Shakhmaty v SSSR, 1934
#2
9 + 7
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.S5xd6#
- 1...Qh1
- 2.S5xd6#
- 1...Qb2
- 2.S5xd6#
- 1...Qc2
- 2.S5xd6#
- 1...Qe2
- 2.S5xd6#
- 1...Qf2
- 2.S5xd6#
- 1...Qg2
- 2.S5xd6#
- 1...Qh3
- 2.S5xd6#
- 1...Qh4
- 2.S5xd6#
- 1...Qh5
- 2.S5xd6#
- 1...Qh7
- 2.Sxd6#
- 1...Qh8
- 2.S5xd6#
- 1...Rb2
- 2.Sa3#
- 1...Rc2
- 2.Sa3#
- 1...Re2
- 2.Sa3#
- 1...Rf2
- 2.Sa3#
- 1...Rg2
- 2.Sa3#
- 1...Ra3
- 2.Sxa3#
- 1...Se1
- 2.Rd4#
- 1...Sg1
- 2.Rd4#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sh4
- 2.Rd4#
- 1...Se5
- 2.S5xd6#
- 2.Rd4#
- 1...Sg5
- 2.Rd4#
- 1...Qg1
- Tries
- 1.Sxa5+?
- 1...Kc5
- 2.Rd5#
- 1...Rxa5+!
- 1...Kc5
- 1.S7xd6+?
- 1...Kc5
- 2.Rd5#
- 2.Rc6#
- 1...Qxd6!
- 1...Kc5
- 1.Sxa5+?
- Keys
- 1.Rd5!
- threat
- 2.Rc6#
- 1...Qc2
- 2.S5xd6#
- 1...Qd2
- 2.S7xd6#
- 1...Rc2
- 2.Sa3#
- 2.Sxa5#
- 1...Rd2
- 2.Sxa5#
- 1...Sd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Se5
- 2.S5xd6#
- 2.S7xd6#
- 2.Rd4#
- threat
- 1.Rd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 21
- Sets
- Q(b);N_GUARD::S(E),XP(g)
- Q(b);N_GUARD,P_PINS(H)::S(E),XP(g)
- R(a);N_GUARD::S(E)
- R(a);N_GUARD::S(E),XR(a)
- S(d);N_GUARD::R1(D)
- S(d);N_GUARD::R1(D),XS(d)
- Tries
- Try
- S(H);CHECK,P_SPINS(H),XP(f)
- Vars
- K(e);P-FLIGHT::R1(D)
- Refutation
- R(a);CHECK,XS(H)
- Try
- S(H);CHECK,XP(g)
- Refutation
- Q(b);XS(H)
- Try
- Actual
- R(D);
- Threat
- R(F)
- Vars
- Q(b);N_GUARD::S(E),XP(g)
- Q(b);N_GUARD::S(H),XP(g)
- R(a);N_GUARD::S(H),XP(f)
- S(d);N_GUARD::R1(D)
- S(d);N_GUARD::R1(D),XS(d)
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).