MESON Chess Problem Database
Problem Display
PID: 176622 (2K5/2p5/6N1/1Q2N1p1/3k4/2r5/3P4/1B6 w - - 0 1)
Ahlheim, Karl-Heinz
Schach-Echo, 1961
#2
6 + 4
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Sf3#
- 1...Ra3
- 2.Sc6#
- 2.Qc4#
- 1...Rb3
- 2.Sc6#
- 2.Qc4#
- 1...Rd3
- 2.Qc4#
- 1...Re3
- 2.Sc6#
- 2.Qc4#
- 1...Rf3
- 2.Sxf3#
- 2.Sc6#
- 2.Qc4#
- 1...Rg3
- 2.Sc6#
- 2.Qc4#
- 1...Rh3
- 2.Sc6#
- 2.Qc4#
- 1...Rc4
- 2.Sf3#
- 2.Qxc4#
- 1...Rc5
- 2.Qd3#
- 1...Rc6
- 2.Sf3#
- 2.Sxc6#
- 1...c5
- 2.Qd7#
- 1...Rc1
- Tries
- 1.Sf4?
- threat
- 2.Se2#
- 2.Se6#
- 2.Qd5#
- 1...Rc2
- 2.Qd5#
- 1...Rd3
- 2.Qd5#
- 1...Rc5
- 2.Sf3#
- 1...c5
- 2.Sc6#
- 1...Re3
- 2.Se6#
- 2.Sc6#
- 2.Qd5#
- 1...Rc6
- 2.Se2#
- 2.Sf3#
- 2.Sxc6#
- 2.Qd5#
- 1...c6
- 2.Se2#
- 2.Se6#
- 1...gxf4!
- threat
- 1.Qb4+?
- 1...Rc4
- 2.Qxc4#
- 1...Kd5!
- 1...Rc4
- 1.Sf4?
- Keys
- 1.Se7!
- threat
- 2.Sf5#
- 2.Qd5#
- 1...Rc2
- 2.Qd5#
- 1...Rd3
- 2.Qd5#
- 1...Rc5
- 2.Sf3#
- 1...c5
- 2.S5c6#
- 1...Rf3
- 2.Sxf3#
- 2.S5c6#
- 2.S7c6#
- 2.Qd5#
- 1...c6
- 2.Sf5#
- threat
- 1.Se7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(a);N_GUARD::S(D)
- R(a);N_GUARD::QAR1(C)
- R(a);N_GUARD,SBLOCK::QAR1(C)
- P(d);SBLOCK::QAR(C)
- Tries
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- R(a);::QAR1(C)
- R(a);N_GUARD::S(D)
- P(d);S_CUTR(a)::S(D)
- Refutation
- P(c);XS(E)
- Try
- Q(C);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAR1(C),XR(a)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- S(E);
- Threat
- DUALS(2)
- Vars
- R(a);::QAR1(C)
- R(a);N_GUARD::S(D)
- P(d);S_CUTR(a)::S(D)
- P(d);::S(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).