MESON Chess Problem Database
Problem Display
PID: 249924 (b7/3pN3/r7/1Q2p1p1/5kP1/3Ppp1P/2P4K/8 w - - 0 1)
Seitz, Karl
Deutsche Schachzeitung, 1890
#2
7 + 8
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sg6#
- 1...Ra2
- 2.Sg6#
- 1...Ra3
- 2.Sg6#
- 1...Ra4
- 2.Sg6#
- 1...Ra5
- 2.Sg6#
- 1...Rc6
- 2.Sd5#
- 1...Rg6
- 2.Sxg6#
- 1...Ra7
- 2.Sg6#
- 1...Bd5
- 2.Sxd5#
- 1...Bc6
- 2.Sg6#
- 1...e4
- 2.Qf5#
- 1...d6
- 2.Sg6#
- 1...Ra1
- Tries
- 1.Qa4+?
- 1...Rxa4
- 2.Sg6#
- 1...Be4
- 2.Sd5#
- 2.Qxe4#
- 1...e4!
- 1...Rxa4
- 1.Qc4+?
- 1...Be4
- 2.Sd5#
- 2.Qxe4#
- 1...e4!
- 1...Be4
- 1.Qb4+?
- 1...Be4
- 2.Sd5#
- 2.Qxe4#
- 1...e4!
- 1...Be4
- 1.Qa4+?
- Keys
- 1.Qc6!
- threat
- 2.Sd5#
- 2.Sg6#
- 1...Rxc6
- 2.Sd5#
- 1...Bxc6
- 2.Sg6#
- 1...dxc6
- 2.Sg6#
- 1...e2
- 2.Sd5#
- 1...e4
- 2.Sg6#
- 1...Ra5
- 2.Sg6#
- 2.Qf6#
- 1...f2
- 2.Sg6#
- 1...d5
- 2.Sxd5#
- 2.Sg6#
- threat
- 1.Qc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- R(f);N_GUARD::S(G)
- R(f);N_GUARD,P_PINP(A)::S(G)
- R(f);S_CUTB(h)::S(G)
- R(f);N_GUARD::S(G),XR(f)
- B(h);N_GUARD::S(G),XB(h)
- B(h);S_CUTR(f)::S(G)
- P(d);OGATE::QAR1(F)
- P(g);S_CUTR(f)::S(G)
- Tries
- Try
- Q(F);CHECK
- Vars
- R(f);XQ(F)::S(G)
- Refutation
- P(d);P_SPINP(d)
- Try
- Q(F);CHECK
- Refutation
- P(d);P_SPINP(d)
- Try
- Q(F);CHECK
- Refutation
- P(d);P_SPINP(d)
- Try
- Actual
- Q(F);
- Threat
- DUALS(2)
- Vars
- R(f);XQ(F)::S(G)
- B(h);XQ(F)::S(G)
- P(g);XQ(F)::S(G)
- P(a);::S(G)
- P(d);::S(G)
- P(b);::S(G)
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).