MESON Chess Problem Database
Problem Display
PID: 101345 (3k1K2/R1pPpPP1/N2p3N/3q4/QP3B2/7B/8/8 w - - 0 1)
Hartong, Jan
Good Companions, 1919
#2
11 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Ra8#
- 1...Qb3
- 2.Ra8#
- 1...Qc4
- 2.Ra8#
- 1...Qe6
- 2.Ra8#
- 1...Qxf7+
- 2.Sxf7#
- 1...Qa8
- 2.Rxa8#
- 1...Qd1
- 2.Ra8#
- 1...Qd2
- 2.Ra8#
- 1...Qd3
- 2.Ra8#
- 1...Qd4
- 2.Ra8#
- 1...Qa5
- 2.Ra8#
- 1...Qc5
- 2.Ra8#
- 1...Qe5
- 2.Ra8#
- 1...Qf5
- 2.Ra8#
- 1...Qg5
- 2.Ra8#
- 1...Qh5
- 2.Ra8#
- 1...c5
- 2.Qa5#
- 1...c6
- 2.Ra8#
- 1...e5
- 2.Bg5#
- 1...Qa2
- Tries
- 1.Bg5?
- threat
- 2.Bxe7#
- 1...Qxf7+
- 2.Sxf7#
- 1...Qxg5
- 2.Ra8#
- 1...Qe6
- 2.Ra8#
- 1...Qe5
- 2.Ra8#
- 1...Qe4!
- threat
- 1.Qc6?
- threat
- 2.Ra8#
- 2.Qxc7#
- 1...Qxf7+
- 2.Sxf7#
- 1...Qc4
- 2.Ra8#
- 2.Qa8#
- 1...Qa5
- 2.Ra8#
- 2.Qa8#
- 1...Qb5
- 2.Qxc7#
- 1...Qc5
- 2.Ra8#
- 2.Qa8#
- 1...Qxc6!
- threat
- 1.Bg5?
- Keys
- 1.Kg8!
- 1...Qxf7+
- 2.Sxf7#
- 1...e5
- 2.Bg5#
- 1...e6
- 2.f8Q#
- 1...Qh1
- 2.f8Q#
- 2.f8R#
- 1...Qa2
- 2.Ra8#
- 1...Qg2
- 2.f8Q#
- 2.f8R#
- 1...Qb3
- 2.Ra8#
- 1...Qf3
- 2.f8Q#
- 2.f8R#
- 1...Qc4
- 2.Ra8#
- 1...Qe4
- 2.f8Q#
- 2.f8R#
- 1...Qc6
- 2.f8Q#
- 2.f8R#
- 1...Qe6
- 2.Ra8#
- 1...Qb7
- 2.f8Q#
- 2.f8R#
- 1...Qa8
- 2.Rxa8#
- 2.f8Q#
- 2.f8R#
- 1...Qd1
- 2.Ra8#
- 2.f8Q#
- 2.f8R#
- 1...Qd2
- 2.Ra8#
- 2.f8Q#
- 2.f8R#
- 1...Qd3
- 2.Ra8#
- 2.f8Q#
- 2.f8R#
- 1...Qd4
- 2.Ra8#
- 2.f8Q#
- 2.f8R#
- 1...Qa5
- 2.Ra8#
- 2.f8Q#
- 2.f8R#
- 1...Qb5
- 2.f8Q#
- 2.f8R#
- 1...Qc5
- 2.Ra8#
- 2.f8Q#
- 2.f8R#
- 1...Qe5
- 2.Ra8#
- 2.f8Q#
- 2.f8R#
- 1...Qf5
- 2.Ra8#
- 1...Qg5
- 2.Ra8#
- 2.f8Q#
- 2.f8R#
- 1...Qh5
- 2.Ra8#
- 1...c5
- 2.Qa5#
- 1...c6
- 2.Ra8#
- 1...Qxf7+
- 1.Kg8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- Q(a);N_GUARD::R(G)
- Q(a);CHECK,XP(I)::S(F),XQ(a)
- Q(a);N_GUARD::R(G),XQ(a)
- Q(a);N_GUARD,P_PINP(I)::R(G)
- P(c);OGATEB::QAB(B)
- P(c);S_CUTQ(a)::R(G)
- P(d);OGATEB::B(D)
- Tries
- Try
- B(D);P_PINP(d)
- Threat
- B(D),XP(d)
- Vars
- Q(a);CHECK,XP(I)::S(F),XQ(a)
- Q(a);N_GUARD,N_SPINP(d),XB(D)::R(G)
- Q(a);N_GUARD::R(G)
- Refutation
- Q(a);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,XP(I)::S(F),XQ(a)
- Q(a);::QAB1(B),XP(c)
- Refutation
- Q(a);XQ(B)
- Try
- Actual
- K(K);P-FLIGHT,P_SPINP(I)
- Vars
- Q(a);CHECK,XP(I)::S(F),XQ(a)
- P(d);OGATEB::B(D)
- P(d);N_PINP(I)::P=Q
- Q(a);N_PINP(I)::P=Q
- Q(a);N_GUARD::R(G)
- Q(a);N_PINP(I),P_PINP(J)::P=Q
- Q(a);N_GUARD,N_PINP(I)::R(G)
- P(c);OGATEB::QAB(B)
- P(c);S_CUTQ(a)::R(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).