MESON Chess Problem Database
Problem Display
PID: 202509 (8/3nRp2/2p2n2/1pPk4/N2p2p1/1P4p1/4Q1K1/8 w - - 0 1)
Kovacs, Florian Janos
Nepszava, 1923
#2
6 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Se4
- 2.Qxe4#
- 1...Sh5
- 2.Rxd7#
- 2.Qe4#
- 1...Sh7
- 2.Rxd7#
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sg8
- 2.Rxd7#
- 2.Qe4#
- 1...Sxc5
- 2.Qe5#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sb6
- 2.Re5#
- 2.Qe5#
- 1...Sb8
- 2.Re5#
- 2.Qe5#
- 1...Sf8
- 2.Re5#
- 2.Qe5#
- 1...d3
- 2.Qxd3#
- 1...bxa4
- 2.Qc4#
- 1...b4
- 2.Qc4#
- 1...Se4
- Tries
- 1.Kf1?
- 1...Sxc5
- 2.Qe5#
- 1...bxa4
- 2.Qc4#
- 1...d3
- 2.Qxd3#
- 1...Se4
- 2.Qxe4#
- 1...Sh5
- 2.Rxd7#
- 2.Qg2#
- 2.Qe4#
- 1...Sh7
- 2.Rxd7#
- 2.Qg2#
- 2.Qe4#
- 1...Se8
- 2.Qg2#
- 2.Qe4#
- 1...Sg8
- 2.Rxd7#
- 2.Qg2#
- 2.Qe4#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sb6
- 2.Re5#
- 2.Qe5#
- 1...Sb8
- 2.Re5#
- 2.Qe5#
- 1...Sf8
- 2.Re5#
- 2.Qe5#
- 1...b4
- 2.Qc4#
- 1...g2+!
- 1...Sxc5
- 1.Kg1?
- 1...Sxc5
- 2.Qe5#
- 1...bxa4
- 2.Qc4#
- 1...d3
- 2.Qxd3#
- 1...Se4
- 2.Qxe4#
- 1...Sh5
- 2.Rxd7#
- 2.Qg2#
- 2.Qe4#
- 1...Sh7
- 2.Rxd7#
- 2.Qg2#
- 2.Qe4#
- 1...Se8
- 2.Qg2#
- 2.Qe4#
- 1...Sg8
- 2.Rxd7#
- 2.Qg2#
- 2.Qe4#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sb6
- 2.Re5#
- 2.Qe5#
- 1...Sb8
- 2.Re5#
- 2.Qe5#
- 1...Sf8
- 2.Re5#
- 2.Qe5#
- 1...b4
- 2.Qc4#
- 1...g2!
- 1...Sxc5
- 1.Kh1?
- 1...Sxc5
- 2.Qe5#
- 1...bxa4
- 2.Qc4#
- 1...d3
- 2.Qxd3#
- 1...Se4
- 2.Qxe4#
- 1...Sh5
- 2.Rxd7#
- 2.Qg2#
- 2.Qe4#
- 1...Sh7
- 2.Rxd7#
- 2.Qg2#
- 2.Qe4#
- 1...Se8
- 2.Qg2#
- 2.Qe4#
- 1...Sg8
- 2.Rxd7#
- 2.Qg2#
- 2.Qe4#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sb6
- 2.Re5#
- 2.Qe5#
- 1...Sb8
- 2.Re5#
- 2.Qe5#
- 1...Sf8
- 2.Re5#
- 2.Qe5#
- 1...b4
- 2.Qc4#
- 1...g2+!
- 1...Sxc5
- 1.Kxg3?
- 1...Se4+
- 2.Qxe4#
- 1...Sxc5
- 2.Qe5#
- 1...bxa4
- 2.Qc4#
- 1...d3
- 2.Qxd3#
- 1...Sh7
- 2.Rxd7#
- 2.Qg2#
- 2.Qe4#
- 1...Se8
- 2.Qg2#
- 2.Qe4#
- 1...Sg8
- 2.Rxd7#
- 2.Qg2#
- 2.Qe4#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sb6
- 2.Re5#
- 2.Qe5#
- 1...Sb8
- 2.Re5#
- 2.Qe5#
- 1...Sf8
- 2.Re5#
- 2.Qe5#
- 1...b4
- 2.Qc4#
- 1...Sh5+!
- 1...Se4+
- 1.Sb6+?
- 1...Sxb6
- 2.Re5#
- 2.Qe5#
- 1...Kxc5!
- 1...Sxb6
- 1.Re6?
- threat
- 2.Rd6#
- 1...Sxc5
- 2.Sb6#
- 2.Qe5#
- 1...bxa4
- 2.Qc4#
- 1...Se4
- 2.Qxe4#
- 1...Se8
- 2.Qe4#
- 1...fxe6!
- threat
- 1.Re8?
- 1...Sxc5
- 2.Qe5#
- 1...bxa4
- 2.Qc4#
- 1...d3
- 2.Qxd3#
- 1...Se4
- 2.Qxe4#
- 1...Sh5
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...Sg8
- 2.Qe4#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sb6
- 2.Re5#
- 2.Qe5#
- 1...Sb8
- 2.Re5#
- 2.Qe5#
- 1...Sf8
- 2.Re5#
- 2.Qe5#
- 1...b4
- 2.Qc4#
- 1...Sxe8!
- 1...Sxc5
- 1.Qf3+?
- 1...Se4
- 2.Qxe4#
- 2.Qxf7#
- 1...gxf3+!
- 1...Se4
- 1.b4?
- threat
- 2.Qa2#
- 1...d3
- 2.Qxd3#
- 1...Se5
- 2.Sb6#
- 2.Rxe5#
- 1...Sb6
- 2.Sxb6#
- 2.Re5#
- 1...Sxc5!
- threat
- 1.Kf1?
- Keys
- 1.Qc2!
- 1...Sxc5
- 2.Qxc5#
- 1...bxa4
- 2.Qc4#
- 1...d3
- 2.Qxd3#
- 1...Se4
- 2.Qxe4#
- 1...Sh5
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sg8
- 2.Qe4#
- 1...Se5
- 2.Sb6#
- 1...Sb6
- 2.Sxb6#
- 2.Qf5#
- 1...Sb8
- 2.Sb6#
- 2.Qf5#
- 1...Sf8
- 2.Sb6#
- 2.Qf5#
- 1...b4
- 2.Qc4#
- 1...Sxc5
- 1.Qc2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- S(g);N_GUARD::QAB1(A),XS(g)
- S(g);N_GUARD::QAB1(A)
- S(h);N_GUARD,XP(E)::QAR1(A)
- P(b);OGATEB::QAR2(A),XP(b)
- P(d);N_GUARD,XS(D)::QAB1(A)
- P(d);N_GUARD::QAB1(A)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- S(h);N_GUARD,XP(E)::QAR1(A)
- P(d);N_GUARD,XS(D)::QAB1(A)
- P(b);OGATEB::QAR2(A),XP(b)
- S(g);N_GUARD::QAB1(A),XS(g)
- P(d);N_GUARD::QAB1(A)
- Refutation
- P(a);CHECK
- Try
- K(B);P-FLIGHT
- Vars
- S(h);N_GUARD,XP(E)::QAR1(A)
- P(d);N_GUARD,XS(D)::QAB1(A)
- P(b);OGATEB::QAR2(A),XP(b)
- S(g);N_GUARD::QAB1(A),XS(g)
- P(d);N_GUARD::QAB1(A)
- Refutation
- P(a);
- Try
- K(B);S_FLIGHT
- Vars
- S(h);N_GUARD,XP(E)::QAR1(A)
- P(d);N_GUARD,XS(D)::QAB1(A)
- P(b);OGATEB::QAR2(A),XP(b)
- S(g);N_GUARD::QAB1(A),XS(g)
- P(d);N_GUARD::QAB1(A)
- Refutation
- P(a);CHECK
- Try
- K(B);P-FLIGHT,XP(a)
- Vars
- S(g);CHECK,N_GUARD::QAB1(A),XS(g)
- S(h);N_GUARD,XP(E)::QAR1(A)
- P(d);N_GUARD,XS(D)::QAB1(A)
- P(b);OGATEB::QAR2(A),XP(b)
- P(d);N_GUARD::QAB1(A)
- Refutation
- S(g);CHECK
- Try
- S(D);CHECK
- Refutation
- K(e);P-FLIGHT,XP(E)
- Try
- R(F);
- Threat
- R1(F)
- Vars
- P(d);N_GUARD,XS(D)::QAB1(A)
- S(g);N_GUARD::QAB1(A),XS(g)
- S(g);N_GUARD::QAB1(A)
- Refutation
- P(i);XR(F)
- Try
- R(F);
- Vars
- S(h);N_GUARD,XP(E)::QAR1(A)
- P(d);N_GUARD,XS(D)::QAB1(A)
- P(b);OGATEB::QAR2(A),XP(b)
- S(g);N_GUARD::QAB1(A),XS(g)
- S(g);N_GUARD::QAB1(A)
- P(d);N_GUARD::QAB1(A)
- Refutation
- S(g);XR(F)
- Try
- Q(A);CHECK
- Refutation
- P(c);CHECK,XQ(A)
- Try
- P(C);
- Threat
- QAB(A)
- Vars
- P(b);OGATEB::QAR2(A),XP(b)
- Refutation
- S(h);XP(E)
- Try
- Actual
- Q(A);
- Vars
- S(h);OGATE,XP(E)::QAR1(A),XS(h)
- P(d);N_GUARD,XS(D)::QAB1(A)
- P(b);OGATEB::QAR2(A),XP(b)
- S(g);N_GUARD::QAB1(A),XS(g)
- S(g);N_GUARD::QAB1(A)
- S(h);N_GUARD::S(D)
- P(d);N_GUARD::QAB1(A)
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).