MESON Chess Problem Database
Problem Display
PID: 150813 (Kn1Q4/p4N2/1Bk1B3/8/Pn1p4/bR1p4/p1p4q/5b2 w - - 0 1)
Akobiya, Yuri
Source?, 1999
#2
7 + 11
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Se5#
- 2.Qc7#
- 2.Qd6#
- 1...Qe5
- 2.Sxe5#
- 1...Qd6
- 2.Qxd6#
- 1...Qc7
- 2.Qxc7#
- 1...Qh1
- 2.Se5#
- 2.Qc7#
- 2.Qd6#
- 1...Qd2
- 2.Se5#
- 2.Qc7#
- 2.Qd6#
- 1...Qe2
- 2.Qc7#
- 2.Qd6#
- 1...Qf2
- 2.Se5#
- 2.Qc7#
- 2.Qd6#
- 1...Qg2
- 2.Se5#
- 2.Qc7#
- 2.Qd6#
- 1...Qh3
- 2.Se5#
- 2.Qc7#
- 2.Qd6#
- 1...Qh4
- 2.Se5#
- 2.Qc7#
- 2.Qd6#
- 1...Qh5
- 2.Qc7#
- 2.Qd6#
- 1...Qh6
- 2.Se5#
- 2.Qc7#
- 2.Qd6#
- 1...Qh7
- 2.Se5#
- 2.Qc7#
- 2.Qd6#
- 1...Qh8
- 2.Qc7#
- 2.Qd6#
- 1...Sd5
- 2.Bxd5#
- 2.Qxd5#
- 1...S4a6
- 2.Bd5#
- 2.Qd5#
- 1...Qg1
- Tries
- 1.Bxa7?
- threat
- 2.Qb6#
- 1...Sd5
- 2.Bxd5#
- 1...Sd7
- 2.Qxd7#
- 1...Qc7!
- threat
- 1.Rxb4?
- threat
- 2.Bd5#
- 2.Qd5#
- 1...Bxb4
- 2.Bd5#
- 1...axb6
- 2.Qxb6#
- 1...Qe5
- 2.Sxe5#
- 1...Qd6
- 2.Qxd6#
- 1...Qh1
- 2.Se5#
- 2.Qc7#
- 2.Qd6#
- 2.Qc8#
- 1...Qg2
- 2.Se5#
- 2.Qc7#
- 2.Qd6#
- 2.Qc8#
- 1...Qh5
- 2.Qc7#
- 2.Qd6#
- 2.Qc8#
- 1...Sd7
- 2.Qxd7#
- 1...Bg2!
- threat
- 1.Qc8+?
- 1...Qc7
- 2.Qxc7#
- 1...Kxb6!
- 1...Qc7
- 1.Bxa7?
- Keys
- 1.Qxd4!
- threat
- 2.Sd8#
- 2.Rc3#
- 2.Qc5#
- 1...axb6
- 2.Rc3#
- 2.Qc3#
- 2.Qc4#
- 1...a1Q
- 2.Sd8#
- 2.Qc5#
- 1...a1B
- 2.Sd8#
- 2.Qc5#
- 1...c1Q
- 2.Sd8#
- 1...c1R
- 2.Sd8#
- 1...Qg1
- 2.Se5#
- 2.Sd8#
- 2.Rc3#
- 2.Qd6#
- 1...Qe5
- 2.Sxe5#
- 2.Sd8#
- 1...Qd6
- 2.Qxd6#
- 1...Qc7
- 2.Rc3#
- 2.Qc5#
- 1...Qd2
- 2.Se5#
- 2.Sd8#
- 2.Qc5#
- 2.Qd6#
- 1...Qf2
- 2.Se5#
- 2.Sd8#
- 2.Rc3#
- 2.Qd6#
- 1...Qh4
- 2.Se5#
- 2.Rc3#
- 2.Qc5#
- 2.Qd6#
- 1...Qh5
- 2.Sd8#
- 2.Qd6#
- 1...Qh8
- 2.Rc3#
- 2.Qc5#
- 2.Qd6#
- 1...Bb2
- 2.Sd8#
- 2.Qc5#
- 1...Sd5
- 2.Qxd5#
- 1...S4a6
- 2.Sd8#
- 2.Qe4#
- 2.Qd5#
- 1...S8a6
- 2.Sd8#
- 2.Bd7#
- 1...Sd7
- 2.Sd8#
- 2.Bxd7#
- 1...d2
- 2.Sd8#
- 2.Qc5#
- threat
- 1.Qxd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- Q(d);N_GUARD::S(E),XQ(d)
- Q(d);N_GUARD::QAR1(G),XQ(d)
- Tries
- Try
- B(C);XP(j)
- Threat
- QAR1(G)
- Vars
- S(g);N_GUARD::B(D),XS(g)
- S(k);N_GUARD::QAB1(G),XS(k)
- Refutation
- Q(d);
- Try
- R(A);XS(g)
- Threat
- DUALS(2)
- Vars
- B(e);XR(A)::B(D)
- P(j);OGATE,XB(C)::QAR1(G),XP(j)
- Q(d);N_GUARD::S(E),XQ(d)
- Q(d);N_GUARD::QAR1(G),XQ(d)
- S(k);N_GUARD::QAB1(G),XS(k)
- Refutation
- B(a);
- Try
- Q(G);CHECK
- Vars
- Q(d);N_GUARD,P_SPINQ(d)::QAR1(G),XQ(d)
- Refutation
- K(i);P-FLIGHT,P_SPINS(g),XB(C)
- Try
- Actual
- Q(G);XP(h)
- Threat
- DUALS(3)
- Vars
- P(c);::S(E)
- Q(d);N_GUARD::QAR1(G),XQ(d)
- S(g);N_GUARD::QAB1(G),XS(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).