MESON Chess Problem Database
Problem Display
PID: 246711 (8/7q/1pR2B2/p2k4/2RNp3/2p5/3b4/K5Q1 w - - 0 1)
Shanshin, Valery Yurevich
Moscow Ty., 2014
#2
6 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qg8
- 2.Qxg8#
- 1...Qh2
- 2.Qg8#
- 1...Qh4
- 2.Qg8#
- 1...Qh6
- 2.Qg8#
- 1...b5
- 2.R4c5#
- 1...Qg8
- Tries
- 1.Se2?
- threat
- 2.Qd4#
- 1...Be3
- 2.Sxc3#
- 1...e3
- 2.Sf4#
- 1...Qh1!
- threat
- 1.Sb5?
- threat
- 2.Qd4#
- 1...Qh1
- 2.Sc7#
- 1...Be3
- 2.Sxc3#
- 1...e3!
- threat
- 1.Se6?
- threat
- 2.Qd4#
- 1...Qh1
- 2.Sc7#
- 1...e3
- 2.Sf4#
- 1...Be3!
- threat
- 1.Qg5+?
- 1...Qf5
- 2.Qxf5#
- 1...Bxg5!
- 1...Qf5
- 1.Qg8+?
- 1...Qf7
- 2.Qxf7#
- 1...Qxg8!
- 1...Qf7
- 1.Se2?
- Keys
- 1.Sf5!
- threat
- 2.Qd4#
- 1...Qh1
- 2.Se7#
- 1...Be3
- 2.Sxe3#
- 1...e3
- 2.Qg2#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- Q(g);N_GUARD::QAB(B),XQ(g)
- Q(g);N_GUARD::QAB(B)
- P(f);N_GUARD::R1(C)
- Tries
- Try
- S(D);
- Threat
- QAR1(B)
- Vars
- B(a);N_GUARD::S(D),XP(b)
- P(c);S_CUTB(a)::S(D)
- Refutation
- Q(g);P_PINQ(B)
- Try
- S(D);
- Threat
- QAR1(B)
- Vars
- Q(g);N_GUARD,P_PINQ(B)::S(D)
- B(a);N_GUARD::S(D),XP(b)
- Refutation
- P(c);
- Try
- S(D);
- Threat
- QAR1(B)
- Vars
- Q(g);N_GUARD,P_PINQ(B)::S(D)
- P(c);S_CUTB(a)::S(D)
- Refutation
- B(a);
- Try
- Q(B);CHECK
- Vars
- Q(g);N_GUARD,P_SPINQ(g)::QAR2(B),XQ(g)
- Refutation
- B(a);XQ(B)
- Try
- Q(B);CHECK
- Vars
- Q(g);N_GUARD,P_SPINQ(g)::QAB(B),XQ(g)
- Refutation
- Q(g);XQ(B)
- Try
- Actual
- S(D);
- Threat
- QAR1(B)
- Vars
- Q(g);N_GUARD,P_PINQ(B)::S(D)
- B(a);N_GUARD::S(D),XB(a)
- P(c);OGATEB::QAB(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).