MESON Chess Problem Database
Problem Display
PID: 231366 (b7/4R1p1/1b1k4/3N2p1/1P2BP2/K1Q5/P7/3r4 w - - 0 1)
van Onzen, BC
Utrecht Dagblad, 1927
#2
8 + 6
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bg1
- 2.Qc7#
- 1...Bf2
- 2.Qc7#
- 1...Be3
- 2.Qc7#
- 1...Bd4
- 2.Qc7#
- 1...Ba5
- 2.Qc5#
- 1...Bc5
- 2.Qxc5#
- 1...Ba7
- 2.Qc7#
- 1...Bc7
- 2.Qc5#
- 2.Qxc7#
- 1...Bd8
- 2.Qc5#
- 1...Bc6
- 2.Qe5#
- 1...g6
- 2.Qf6#
- 1...Bg1
- Tries
- 1.Sxb6?
- threat
- 2.Sc8#
- 2.Qe5#
- 2.Qc5#
- 2.Qc7#
- 1...Bxe4
- 2.Qc5#
- 2.Qc7#
- 1...Rc1
- 2.Sc8#
- 2.Qe5#
- 1...Rd3
- 2.Sc8#
- 1...Rd4
- 2.Sc8#
- 2.Qc5#
- 2.Qc7#
- 1...Rd5
- 2.Sc8#
- 2.Qc7#
- 1...Bd5
- 2.Sc8#
- 2.Qc5#
- 2.Qc7#
- 1...Bc6
- 2.Sc8#
- 2.Qe5#
- 2.Qc5#
- 1...Bb7
- 2.Qe5#
- 2.Qc5#
- 2.Qc7#
- 1...Kxe7!
- threat
- 1.Qc8?
- threat
- 2.Re6#
- 2.Qe6#
- 2.Qd7#
- 1...Bxd5
- 2.Qd7#
- 1...Bc6
- 2.Re6#
- 2.Qe6#
- 1...Rd3+!
- threat
- 1.Sxb6?
- Keys
- 1.Bf5!
- threat
- 2.Rd7#
- 1...Kxd5
- 2.Rd7#
- 1...Bc5
- 2.Qxc5#
- 1...Bc6
- 2.Qe5#
- threat
- 1.Bf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- B(c);N_GUARD::QAB1(C)
- B(c);N_GUARD,P_PINP(D)::QAB1(C),XB(c)
- B(f);SBLOCK::QAB1(C)
- P(e);N_GUARD::QAR2(C)
- Tries
- Try
- S(G);XB(c)
- Threat
- DUALS(4)
- Vars
- R(a);P_PINQ(C)::S(G)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- B(f);XS(G)::QAR1(C)
- Refutation
- R(a);CHECK
- Try
- Actual
- B(E);
- Threat
- R1(H)
- Vars
- K(d);P-FLIGHT,XS(G)::R(H)
- B(c);N_GUARD,P_PINP(D)::QAB1(C),XB(c)
- B(f);SBLOCK::QAB1(C)
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).