MESON Chess Problem Database
Problem Display
PID: 242215 (q7/bp6/2Q5/r7/4Nn1p/7k/7P/3B3K w - - 0 1)
Kisis, Imants J
1st Prize, Mathieson MT, 1969-1970
#2
5 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sg5#
- 1...Ra2
- 2.Sg5#
- 1...Ra3
- 2.Sg5#
- 1...Ra4
- 2.Sg5#
- 1...Rc5
- 2.Sf2#
- 1...Rg5
- 2.Sxg5#
- 1...Ra6
- 2.Sg5#
- 1...Bf2
- 2.Sxf2#
- 1...Bc5
- 2.Sg5#
- 1...Bb8
- 2.Sf2#
- 1...Sd5
- 2.Sg5#
- 2.Qd7#
- 2.Qe6#
- 1...b5
- 2.Sg5#
- 1...b6
- 2.Sf2#
- 1...Ra1
- Tries
- 1.Qd7+?
- 1...Rf5
- 2.Sg5#
- 2.Qxf5#
- 1...Se6!
- 1...Rf5
- 1.Qc3+?
- 1...Be3
- 2.Sf2#
- 2.Qxe3#
- 1...Sd3!
- 1...Be3
- 1.Qe6+?
- 1...Rf5
- 2.Sg5#
- 2.Qxf5#
- 1...Sxe6!
- 1...Rf5
- 1.Qd7+?
- Keys
- 1.Qc5!
- threat
- 2.Sf2#
- 2.Sg5#
- 1...Rxc5
- 2.Sf2#
- 1...Bxc5
- 2.Sg5#
- 1...Se2
- 2.Sf2#
- 1...Qg8
- 2.Sf2#
- 1...Qd8
- 2.Sf2#
- 1...Ra2
- 2.Sg5#
- 2.Qf5#
- 1...Sd3
- 2.Sg5#
- 1...Se6
- 2.Sf2#
- 1...b5
- 2.Qf5#
- 1...b6
- 2.Qe3#
- threat
- 1.Qc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 8
- Sets
- R(d);N_GUARD,P_PINB(A)::S(D)
- R(d);N_GUARD::S(D)
- R(d);N_GUARD,SBLOCK::S(D)
- R(d);S_CUTB(e)::S(D)
- R(d);N_GUARD::S(D),XR(d)
- B(e);N_GUARD::S(D),XB(e)
- B(e);S_CUTR(d)::S(D)
- B(e);N_GUARD::S(D)
- P(f);S_CUTR(d)::S(D)
- P(f);S_CUTB(e)::S(D)
- Tries
- Try
- Q(E);CHECK
- Refutation
- S(b);P_SPINS(b)
- Try
- Q(E);CHECK
- Refutation
- S(b);P_SPINS(b)
- Try
- Q(E);CHECK
- Refutation
- S(b);XQ(E)
- Try
- Actual
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(d);XQ(E)::S(D)
- B(e);XQ(E)::S(D)
- S(b);::S(D)
- Q(g);::S(D)
- P(f);P_PINS(D),S_CUTR(d)::QAB(E)
- P(f);P_PINS(D),S_CUTB(e)::QAR(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).