MESON Chess Problem Database
Problem Display
PID: 267496 (N2r4/pRPp4/k2p1p2/rn1Q1K2/3b1p2/p2n4/2NqB3/1b6 w - - 0 1)
Ceriani, Luigi
Die Schwalbe, 1929
#2
7 + 14
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Ra4
- 2.Qxb5#
- 1...Rb8
- 2.cxb8S#
- 1...Sc3
- 2.Sb4#
- 1...Sxc7
- 2.Sxc7#
- 1...Ra4
- Tries
- 1.c8Q?
- threat
- 2.Rb6#
- 1...Ra4
- 2.Qxb5#
- 1...Bb6
- 2.Rxb6#
- 1...Rxc8!
- threat
- 1.c8B?
- threat
- 2.Rb6#
- 1...Ra4
- 2.Qxb5#
- 1...Bb6
- 2.Rxb6#
- 1...Rxc8!
- threat
- 1.c8Q?
- Keys
- 1.Rb8!
- threat
- 2.Qb7#
- 1...Rxb8
- 2.cxb8S#
- 1...Sxc7
- 2.Sxc7#
- 1...Ra4
- 2.Qxb5#
- 1...Sc5
- 2.Qxd6#
- 1...Sc3
- 2.Sb4#
- threat
- 1.Rb8!
This is after
After KS Howard.
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(g);N_GUARD::QAB1(C),XS(h)
- R(n);OGATE::PXR(n)=S
- S(h);P_PINQ(C),P_SPINS(d),S_CUTQ(b)::S(A)
- S(h);P_PINQ(C),P_SPINS(d),XP(F)::S(G),XS(h)
- Tries
- Try
- P(F);
- Threat
- QAB(F)+R(E),DCHECK
- Vars
- R(g);N_GUARD::QAB1(C),XS(h)
- B(e);::QAB(F)+R(E),DCHECK,XB(e)
- Refutation
- R(n);XQ(F)
- Try
- P(F);
- Threat
- B(F)+R(E),DCHECK
- Vars
- R(g);N_GUARD::QAB1(C),XS(h)
- B(e);::B(F)+R(E),DCHECK,XB(e)
- Refutation
- R(n);XB(F)
- Try
- Actual
- R(E);
- Threat
- QAB1(C)
- Vars
- R(n);OGATE,XR(E)::PXR(n)=S
- S(h);P_PINQ(C),P_SPINS(d),XP(F)::S(G),XS(h)
- R(g);N_GUARD::QAB1(C),XS(h)
- S(d);P_PINS(A),P_SPINS(h),S_CUTB(e)::QAR(C),XP(j)
- S(h);P_PINQ(C),P_SPINS(d),S_CUTQ(b)::S(A)
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).