MESON Chess Problem Database
Problem Display
PID: 204508 (4rrQ1/3Bpq1N/3p4/3k4/1P5R/1K6/8/B1b2N2 w - - 0 1)
Nikonov, L
64 Shakhmatnoe obozrenie, 1925
#2
8 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Qxe6#
- 1...Ba3
- 2.Se3#
- 1...Be3
- 2.Sxe3#
- 1...Bf4
- 2.Qg2#
- 1...e5
- 2.Sf6#
- 1...Qe6
- Tries
- 1.Bg7?
- threat
- 2.Rd4#
- 1...Bb2
- 2.Se3#
- 1...Be3
- 2.Sxe3#
- 1...e5
- 2.Sf6#
- 1...Bf4!
- threat
- 1.Qxf7+?
- 1...e6
- 2.Sf6#
- 1...Rxf7!
- 1...e6
- 1.Qg4?
- threat
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Qxf1
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 1...Qxh7
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 1...Qf4
- 2.Qe6#
- 1...Bb2
- 2.Qe4#
- 1...Bf4
- 2.Qf3#
- 2.Qg2#
- 1...Qe6
- 2.Qxe6#
- 2.Qc4#
- 2.Qd4#
- 1...Qg6
- 2.Qc4#
- 2.Qd4#
- 1...Qf2
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...Qf5
- 2.Qc4#
- 2.Qd4#
- 1...Qf6
- 2.Qc4#
- 2.Qe4#
- 1...Qg7
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...Rc8
- 2.Qd4#
- 2.Qe4#
- 1...Be3
- 2.Sxe3#
- 2.Qc4#
- 2.Qe4#
- 1...e5
- 2.Qc4#
- 2.Qe4#
- 1...Qf3+!
- threat
- 1.Bg7?
- Keys
- 1.Bh8!
- threat
- 2.Rd4#
- 1...Bf4
- 2.Qg2#
- 1...Bb2
- 2.Se3#
- 1...Be3
- 2.Sxe3#
- 1...e5
- 2.Sf6#
- threat
- 1.Bh8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(e);OGATE::QAB1(H),XQ(e)
- B(a);N_GUARD::S(B)
- B(a);N_GUARD::S(B),XB(a)
- B(a);::QAB(H)
- P(d);N_GUARD::S(G)
- Tries
- Try
- B(A);
- Threat
- R1(E)
- Vars
- B(a);N_GUARD::S(B)
- B(a);N_GUARD::S(B),XB(a)
- P(d);N_GUARD,SBLOCK::S(G)
- Refutation
- B(a);
- Try
- Q(H);CHECK,XQ(e)
- Vars
- P(d);P_SPINP(d)::S(G)
- Refutation
- R(g);XQ(H)
- Try
- Q(H);N_PINQ(e)
- Threat
- DUALS(3)
- Vars
- Q(e);N_GUARD::QAB1(H)
- B(a);::QAB1(H)
- Refutation
- Q(e);CHECK
- Try
- Actual
- B(A);
- Threat
- R1(E)
- Vars
- B(a);::QAB(H)
- B(a);N_GUARD::S(B)
- B(a);N_GUARD::S(B),XB(a)
- P(d);N_GUARD,SBLOCK::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).