MESON Chess Problem Database
Problem Display
PID: 95376 (2qN4/8/pR6/p1k1Nn2/3p2R1/3p3K/BQ1P4/4n3 w - - 0 1)
Kahn, Kurt
Neue Leipziger Zeitung, 1926
#2
8 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Sxe6#
- 2.Sb7#
- 1...Qb7
- 2.Se6#
- 2.Sxb7#
- 1...Qd7
- 2.Sxd7#
- 1...Qc6
- 2.Rxc6#
- 1...Qc7
- 2.Se6#
- 1...Qa8
- 2.Sd7#
- 2.Se6#
- 1...Qb8
- 2.Sd7#
- 2.Se6#
- 2.Rc6#
- 1...Qxd8
- 2.Rc6#
- 1...Sc2
- 2.Sxd3#
- 1...Sg2
- 2.Sxd3#
- 1...Sf3
- 2.Sxd3#
- 1...Se3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...Sh4
- 2.Qxd4#
- 1...Sd6
- 2.Qxd4#
- 1...Sh6
- 2.Qxd4#
- 1...Se7
- 2.Qxd4#
- 1...Sg7
- 2.Qxd4#
- 1...a4
- 2.Qb4#
- 1...Qe6
- Tries
- 1.Kh2?
- 1...Qxd8
- 2.Rc6#
- 1...Qc6
- 2.Rxc6#
- 1...Qe6
- 2.Sxe6#
- 2.Sb7#
- 1...Qb7
- 2.Se6#
- 2.Sxb7#
- 1...Qd7
- 2.Sxd7#
- 1...Qc7
- 2.Se6#
- 1...Qa8
- 2.Sd7#
- 2.Se6#
- 1...Qb8
- 2.Se6#
- 2.Rc6#
- 1...Sc2
- 2.Sxd3#
- 1...Sg2
- 2.Sxd3#
- 1...Se3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...Sh4
- 2.Qxd4#
- 1...Sd6
- 2.Qxd4#
- 1...Sh6
- 2.Qxd4#
- 1...Se7
- 2.Qxd4#
- 1...Sg7
- 2.Qxd4#
- 1...a4
- 2.Qb4#
- 1...Sf3+!
- 1...Qxd8
- 1.Rxa6?
- threat
- 2.Qb6#
- 1...Qxd8
- 2.Rc6#
- 1...Qc6
- 2.Rxc6#
- 1...Qe6
- 2.Sxe6#
- 2.Sb7#
- 1...Qb7
- 2.Se6#
- 2.Sxb7#
- 1...Qc7
- 2.Se6#
- 1...Qb8
- 2.Sd7#
- 2.Se6#
- 2.Rc6#
- 1...Qxa6!
- threat
- 1.Rb7?
- threat
- 2.Qa3#
- 2.Qb6#
- 1...Qxb7
- 2.Sxb7#
- 1...Qxd8
- 2.Qa3#
- 1...Qc7
- 2.Qa3#
- 1...Qe6
- 2.Qa3#
- 1...Qc6
- 2.Qa3#
- 1...Sc2
- 2.Qb6#
- 1...Kd6!
- threat
- 1.Kh2?
- Keys
- 1.Rg5!
- 1...Se3+
- 2.Sd7#
- 1...Sg3+
- 2.Sd7#
- 1...Sh4+
- 2.Sd7#
- 1...Sd6+
- 2.Sd7#
- 1...Sh6+
- 2.Sd7#
- 1...Se7+
- 2.Sd7#
- 1...Sg7+
- 2.Sd7#
- 1...Qxd8
- 2.Rc6#
- 1...Qc6
- 2.Rxc6#
- 1...Qd7
- 2.Sxd7#
- 1...Qe6
- 2.Sxe6#
- 2.Sb7#
- 1...Qb7
- 2.Se6#
- 2.Sxb7#
- 1...Qc7
- 2.Se6#
- 1...Qa8
- 2.Sd7#
- 2.Se6#
- 1...Qb8
- 2.Sd7#
- 2.Se6#
- 2.Rc6#
- 1...Sc2
- 2.Sxd3#
- 1...Sg2
- 2.Sxd3#
- 1...Sf3
- 2.Sxd3#
- 1...a4
- 2.Qb4#
- 1...Se3+
- 1.Rg5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(h);N_GUARD::S(F),XQ(h)
- Q(h);N_GUARD::R1(G),XQ(h)
- Q(h);N_GUARD::S(H)
- Q(h);N_GUARD,XS(H)::R1(G)
- S(a);N_GUARD::S(F),XP(b)
- S(f);N_GUARD,P_PINR(E)::QAB1(B),XP(c)
- P(d);N_GUARD::QAB1(B)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- Q(h);N_GUARD,XS(H)::R1(G)
- Q(h);N_GUARD::R1(G),XQ(h)
- Q(h);N_GUARD::S(F),XQ(h)
- Q(h);N_GUARD,P_PINS(F)::S(H)
- S(a);N_GUARD::S(F),XP(b)
- S(f);N_GUARD::QAB1(B),XP(c)
- P(d);N_GUARD::QAB1(B)
- Refutation
- S(a);CHECK
- Try
- R(G);XP(g)
- Threat
- QAB1(B)
- Vars
- Q(h);N_GUARD,XS(H)::R1(G)
- Q(h);N_GUARD::R1(G),XQ(h)
- Q(h);N_GUARD::S(H)
- Refutation
- Q(h);XR(G)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- Q(h);XR(G)::S(H),XQ(h)
- Q(h);XS(H)::QAB(B)
- Q(h);::QAB(B)
- S(a);::QAB1(B)
- Refutation
- K(e);S_FLIGHT
- Try
- Actual
- R(E);
- Vars
- S(f);CHECK::R(E)+S(F),DCHECK
- Q(h);N_GUARD,XS(H)::R1(G)
- Q(h);N_GUARD::R1(G),XQ(h)
- Q(h);N_GUARD::S(F),XQ(h)
- Q(h);N_GUARD::S(H)
- S(a);N_GUARD::S(F),XP(b)
- P(d);N_GUARD::QAB1(B)
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).