MESON Chess Problem Database
Problem Display
PID: 90083 (1Q3K2/2rpB2R/nN4P1/R1q1kP2/4n2N/4P1p1/8/3rb2B w - - 0 1)
Schirdewan, Ulrich
Die Schwalbe, 1949
#2
11 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Sc4#
- 2.Sxd7#
- 1...Sd2
- 2.Sxd7#
- 1...Sf2
- 2.Sc4#
- 1...Sc3
- 2.Sc4#
- 1...Sg5
- 2.Sc4#
- 1...Sf6
- 2.Sc4#
- 1...d5
- 2.Sd7#
- 1...Qd5
- Tries
- 1.Rxc5+?
- 1...Rd5
- 2.Sc4#
- 2.Sxd7#
- 2.Rxd5#
- 1...Sexc5
- 2.Sc4#
- 1...d5
- 2.Sc4#
- 2.Sd7#
- 1...Saxc5!
- 1...Rd5
- 1.Rh5?
- threat
- 2.Sf3#
- 1...Sd2
- 2.Sxd7#
- 1...Sf2
- 2.Sc4#
- 1...Sc3
- 2.Sc4#
- 1...Sg5
- 2.Sc4#
- 1...Sf6
- 2.Sc4#
- 1...Sd6!
- threat
- 1.Rxc5+?
- Keys
- 1.Rf7!
- threat
- 2.Sf3#
- 1...Sd2
- 2.Sxd7#
- 1...Sf2
- 2.Sc4#
- 1...Sc3
- 2.Sc4#
- 1...Sg5
- 2.Sc4#
- 1...Sd6
- 2.Bf6#
- 1...Sf6
- 2.Sc4#
- threat
- 1.Rf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- S(d);S_CUTR(a)::S(F),XP(i)
- S(d);::S(F)
- P(i);N_SPINQ(e),SBLOCK,S_CUTR(a)::S(F)
- Tries
- Try
- R(D);CHECK,N_SPINB(H),XQ(e)
- Vars
- S(d);XR(D)::S(F)
- Refutation
- S(g);XR(D)
- Try
- R(I);
- Threat
- S(C)
- Vars
- S(d);S_CUTR(a)::S(F),XP(i)
- S(d);::S(F)
- Refutation
- S(d);N_PINB(H),N_SPINR(h)
- Try
- Actual
- R(I);
- Threat
- S(C)
- Vars
- S(d);S_CUTR(a)::S(F),XP(i)
- S(d);::S(F)
- S(d);N_PINB(H),N_SPINR(h),SBLOCK::B(H)
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).