MESON Chess Problem Database
Problem Display
PID: 233561 (2R4n/3Np2K/2Bkp2R/5p1Q/1r3p2/b3N2p/2b5/2r5 w - - 0 1)
Viksna, Kristaps
Freie Presse, 1991
#2
7 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Sc4#
- 1...Rb2
- 2.Sc4#
- 1...Rb3
- 2.Sc4#
- 1...Rc4
- 2.Sxc4#
- 1...Re4
- 2.Sxf5#
- 1...Rb5
- 2.Sc4#
- 1...Rb6
- 2.Sc4#
- 1...Rb7
- 2.Sc4#
- 1...Rb8
- 2.Sc4#
- 1...Bd1
- 2.Sxf5#
- 1...Bb3
- 2.Sxf5#
- 1...Ba4
- 2.Sxf5#
- 1...Rb1
- Tries
- 1.Qd1+?
- 1...Rd4
- 2.Sc4#
- 2.Qxd4#
- 1...Bxd1
- 2.Sxf5#
- 1...Bd3
- 2.Sxf5#
- 1...Rxd1!
- 1...Rd4
- 1.Qg6?
- threat
- 2.Qxe6#
- 1...Re4
- 2.Sxf5#
- 1...Bb3
- 2.Sxf5#
- 1...Sxg6!
- threat
- 1.Qd1+?
- Keys
- 1.Qxf5!
- threat
- 2.Rxe6#
- 1...Bxf5+
- 2.Sxf5#
- 1...Re4
- 2.Qd5#
- 1...Bb3
- 2.Qe5#
- 1...Sg6
- 2.Qc5#
- threat
- 1.Qxf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- R(e);N_GUARD::S(A)
- R(e);N_GUARD::S(A),XR(e)
- R(e);S_CUTB(b)::S(A),XP(g)
- B(b);N_GUARD::S(A),XP(g)
- Tries
- Try
- Q(B);CHECK
- Vars
- B(b);XQ(B)::S(A),XP(g)
- B(b);P_SPINB(b)::S(A),XP(g)
- Refutation
- R(a);XQ(B)
- Try
- Q(B);
- Threat
- QAR1(B),XP(i)
- Vars
- R(e);S_CUTB(b)::S(A),XP(g)
- B(b);N_GUARD::S(A),XP(g)
- Refutation
- S(k);N_SPINP(i),XQ(B)
- Try
- Actual
- Q(B);P_SPINQ(B),XP(g)
- Threat
- R1(D),XP(i)
- Vars
- B(b);CHECK,XQ(B)::S(A),XB(b)
- R(e);N_PINQ(B)::QAR1(B)
- B(b);N_PINQ(B)::QAB1(B)
- S(k);N_PINQ(B),N_SPINP(i)::QAB1(B)
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).