MESON Chess Problem Database
Problem Display
PID: 144562 (8/N3p3/3pB2p/B1kq1Q1P/1n2p3/4P3/3N3p/7K w - - 0 1)
Katko, Imre
Magyar Sakkvilag, 1931
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Sb3#
- 2.Sxe4#
- 1...Qxf5
- 2.Sb3#
- 1...Sa2
- 2.Qxd5#
- 1...Sc2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Sc6
- 2.Qxd5#
- 1...Qe5
- Tries
- 1.Kxh2?
- 1...Qxf5
- 2.Sb3#
- 1...Sa2
- 2.Qxd5#
- 1...Sc2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Sc6
- 2.Qxd5#
- 1...Qe5+!
- 1...Qxf5
- 1.Sc4?
- 1...Qxf5
- 2.Bb6#
- 1...Qe5
- 2.Bb6#
- 1...Sa2
- 2.Qxd5#
- 1...Sc2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Sc6
- 2.Qxd5#
- 1...Kxc4!
- 1...Qxf5
- 1.Qe5?
- 1...Qxe5
- 2.Sb3#
- 1...Sa2
- 2.Qxd5#
- 1...Sc2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Sc6
- 2.Qxd5#
- 1...dxe5!
- 1...Qxe5
- 1.Qg5?
- 1...Qxg5
- 2.Sb3#
- 2.Sxe4#
- 1...Qe5
- 2.Sb3#
- 2.Sxe4#
- 1...Qf5
- 2.Sb3#
- 2.Sxe4#
- 1...Sa2
- 2.Qxd5#
- 1...Sc2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Sc6
- 2.Qxd5#
- 1...hxg5!
- 1...Qxg5
- 1.Kxh2?
- Keys
- 1.Qxe4!
- 1...Qxe4+
- 2.Sxe4#
- 1...Qxe6
- 2.Qd4#
- 1...Qxd2
- 2.Qc4#
- 1...Qxh5
- 2.Sb3#
- 2.Qxb4#
- 2.Qc4#
- 2.Qd4#
- 1...Qa2
- 2.Qxb4#
- 2.Qd4#
- 1...Qb3
- 2.Sxb3#
- 2.Qd4#
- 1...Qc4
- 2.Qxc4#
- 1...Qc6
- 2.Sb3#
- 1...Qb7
- 2.Sb3#
- 1...Qa8
- 2.Sb3#
- 1...Qd3
- 2.Qxb4#
- 1...Qd4
- 2.Sb3#
- 2.Qxd4#
- 2.exd4#
- 1...Qe5
- 2.Sb3#
- 2.Qxb4#
- 2.Qc4#
- 1...Qf5
- 2.Sb3#
- 2.Qxb4#
- 2.Qc4#
- 2.Qd4#
- 1...Qg5
- 2.Sb3#
- 2.Qxb4#
- 2.Qc4#
- 2.Qd4#
- 1...Sa2
- 2.Qxd5#
- 1...Sc2
- 2.Qxd5#
- 1...Sd3
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Sc6
- 2.Qxd5#
- 1...Qxe4+
- 1.Qxe4!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 1
- Sets
- Q(e);N_SPINQ(e),XQ(E)::S(B)
- S(b);N_GUARD::QAR1(E),XQ(e)
- Tries
- Try
- K(A);P-FLIGHT,XP(a)
- Vars
- Q(e);N_SPINQ(e),XQ(E)::S(B)
- S(b);N_GUARD::QAR1(E),XQ(e)
- Refutation
- Q(e);CHECK
- Try
- S(B);
- Vars
- Q(e);N_SPINQ(e),XQ(E)::B(D)
- Q(e);::B(D)
- S(b);N_GUARD::QAR1(E),XQ(e)
- Refutation
- K(d);P-FLIGHT,XS(B)
- Try
- Q(E);
- Vars
- Q(e);N_SPINQ(e),XQ(E)::S(B)
- S(b);N_GUARD::QAR1(E),XQ(e)
- Refutation
- P(f);N_SPINQ(e),XQ(E)
- Try
- Q(E);
- Vars
- S(b);N_GUARD::QAR1(E),XQ(e)
- Refutation
- P(g);N_SPINQ(e),XQ(E)
- Try
- Actual
- Q(E);N_PINQ(e),P_SPINQ(E),XP(c)
- Vars
- Q(e);CHECK,XQ(E)::S(B),XQ(e)
- Q(e);N_PINQ(E),XB(G)::QAB1(E)
- Q(e);N_PINQ(E),XS(B)::QAR1(E)
- Q(e);N_PINQ(E)::QAR1(E),XQ(e)
- Q(e);N_GUARD::S(B)
- Q(e);N_PINQ(E)::QAB1(E),XS(b)
- S(b);N_GUARD::QAR1(E),XQ(e)
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).