MESON Chess Problem Database
Problem Display
PID: 71197 (K2N4/1Pppp3/3k2N1/R2b4/8/p6B/q7/3Qn3 w - - 0 1)
Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)
1/2 Prize, Source?, 1928
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Rxd5#
- 2.Qxd5#
- 1...Qa1
- 2.Rxd5#
- 2.Qxd5#
- 1...Qb2
- 2.Rxd5#
- 2.Qxd5#
- 1...Qc2
- 2.Rxd5#
- 2.Qxd5#
- 1...Qe2
- 2.Rxd5#
- 2.Qxd5#
- 1...Qf2
- 2.Rxd5#
- 2.Qxd5#
- 1...Qh2
- 2.Rxd5#
- 2.Qxd5#
- 1...c6
- 2.b8Q#
- 2.b8B#
- 1...Qb1
- Tries
- 1.Qd4?
- threat
- 2.Qc5#
- 2.Qe5#
- 1...c5
- 2.Qxc5#
- 2.Qe5#
- 1...c6
- 2.Qe5#
- 2.b8Q#
- 2.b8B#
- 1...Qc4
- 2.Qe5#
- 1...Qa1
- 2.Rxd5#
- 2.Qc5#
- 2.Qxd5#
- 1...Qb2
- 2.Rxd5#
- 2.Qc5#
- 2.Qxd5#
- 1...Qc2
- 2.Rxd5#
- 2.Qe5#
- 2.Qxd5#
- 1...Qe2
- 2.Rxd5#
- 2.Qc5#
- 2.Qxd5#
- 1...Qf2
- 2.Rxd5#
- 2.Qe5#
- 2.Qxd5#
- 1...Qh2
- 2.Rxd5#
- 2.Qc5#
- 2.Qxd5#
- 1...Sf3
- 2.Qc5#
- 1...e5
- 2.Qc5#
- 2.Qxe5#
- 1...Sd3!
- threat
- 1.Qd4?
- Keys
- 1.Qa4!
- threat
- 2.Qxd7#
- 1...Bxb7+
- 2.Sxb7#
- 1...c6
- 2.b8Q#
- 2.b8B#
- 1...Bc6
- 2.Qb4#
- 1...Be6
- 2.Qf4#
- 1...e6
- 2.Sf7#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- P(f);N_PINP(E)::P=Q
- Tries
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(b);::QAB1(A)
- S(a);::QAB1(A)
- Refutation
- S(a);
- Try
- Actual
- Q(A);N_PINB(d)
- Threat
- QAR1(A),XP(g)
- Vars
- B(d);CHECK,XP(E)::S(G),XB(d)
- P(f);N_PINP(E)::P=Q
- B(d);S_CUTP(f)::QAB(A)
- B(d);N_PINP(E),S_CUTP(h)::QAB(A)
- P(h);S_CUTB(d)::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).