MESON Chess Problem Database
Problem Display
PID: 203283 (8/2p5/4rR2/r2qk1P1/2Q1Np2/B1pR1P2/4K3/3nN3 w - - 0 1)
Homey, Hans
4th Prize, Niederfranksiche Arbeiter-Schachzeitung, 1924
#2
9 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxe4+
- 2.Qxe4#
- 1...Qc6
- 2.Qd4#
- 1...Qb7
- 2.Qxe6#
- 2.Qd4#
- 1...Qa8
- 2.Qxe6#
- 2.Qd4#
- 1...Qxd3+
- 2.Sxd3#
- 1...Qd4
- 2.Qxe6#
- 2.Qxd4#
- 1...Qb5
- 2.Qxe6#
- 2.Qd4#
- 1...Qc5
- 2.Qxe6#
- 1...Qd8
- 2.Qxe6#
- 1...Rxa3
- 2.Rxd5#
- 2.Qxd5#
- 1...Ra4
- 2.Rxd5#
- 2.Qxd5#
- 1...Raa6
- 2.Rxd5#
- 2.Qxd5#
- 1...Ra7
- 2.Rxd5#
- 2.Qxd5#
- 1...Ra8
- 2.Rxd5#
- 2.Qxd5#
- 1...c5
- 2.Rxd5#
- 2.Qxd5#
- 1...Qxe4+
- Tries
- 1.Sd2?
- threat
- 2.Qxf4#
- 1...Qxf3+
- 2.Sexf3#
- 2.Sdxf3#
- 1...Qe4+
- 2.Qxe4#
- 1...Qxd3+
- 2.Sxd3#
- 1...Qxc4
- 2.Sxc4#
- 1...Qd4
- 2.Qxe6#
- 2.Qxd4#
- 1...Ra4
- 2.Rxd5#
- 2.Qxd5#
- 1...Rxf6!
- threat
- 1.Sf2?
- threat
- 2.Sg4#
- 2.Qxf4#
- 1...Qxf3+
- 2.Sxf3#
- 1...Qe4+
- 2.Qxe4#
- 1...Qxd3+
- 2.Sexd3#
- 2.Sfxd3#
- 1...Qxc4
- 2.Sg4#
- 1...Rxa3
- 2.Rxd5#
- 2.Qxd5#
- 2.Qxf4#
- 1...Sxf2
- 2.Qxf4#
- 1...Rc5
- 2.Qxf4#
- 1...c5
- 2.Rxd5#
- 2.Qxd5#
- 2.Qxf4#
- 1...Qd4
- 2.Sg4#
- 2.Qxe6#
- 2.Qxd4#
- 1...Ra4
- 2.Sg4#
- 2.Rxd5#
- 2.Qxd5#
- 1...Se3
- 2.Qxf4#
- 1...Rxf6!
- threat
- 1.Sg3?
- threat
- 2.Rf5#
- 2.Qxf4#
- 1...Qxf3+
- 2.Sxf3#
- 1...Qe4+
- 2.Qxe4#
- 1...Qxd3+
- 2.Sxd3#
- 1...Qxc4
- 2.Rf5#
- 1...Rxa3
- 2.Rxd5#
- 2.Qxd5#
- 2.Qxf4#
- 1...fxg3
- 2.Qf4#
- 2.f4#
- 1...Rc5
- 2.Qxf4#
- 1...c5
- 2.Rxd5#
- 2.Qxd5#
- 2.Qxf4#
- 1...Qd4
- 2.Rf5#
- 2.Rxe6#
- 2.Qxe6#
- 2.Qxd4#
- 1...Ra4
- 2.Rxd5#
- 2.Rf5#
- 2.Qxd5#
- 1...Rea6
- 2.Qxf4#
- 1...Rb6
- 2.Qxf4#
- 1...Rc6
- 2.Qxf4#
- 1...Rd6
- 2.Qxf4#
- 1...Re7
- 2.Qxf4#
- 1...Re8
- 2.Qxf4#
- 1...Se3
- 2.Qxf4#
- 1...Rxf6!
- threat
- 1.Sd6?
- threat
- 2.Sf7#
- 2.Rf5#
- 2.Qxf4#
- 1...Qxf3+
- 2.Sxf3#
- 1...Qe4+
- 2.Qxe4#
- 1...Qxd3+
- 2.Sxd3#
- 1...Qxc4
- 2.Sxc4#
- 2.Sf7#
- 2.Rf5#
- 1...Qxd6
- 2.Qe4#
- 2.Qxf4#
- 1...Rxa3
- 2.Sf7#
- 2.Rxd5#
- 2.Qxd5#
- 2.Qxf4#
- 1...Rxd6
- 2.Qxf4#
- 1...cxd6
- 2.Qxf4#
- 1...Rc5
- 2.Sf7#
- 2.Qxf4#
- 1...c5
- 2.Sf7#
- 2.Rxd5#
- 2.Qxd5#
- 2.Qxf4#
- 1...Qd4
- 2.Sf7#
- 2.Rf5#
- 2.Rxe6#
- 2.Qxe6#
- 2.Qxd4#
- 1...Ra4
- 2.Sf7#
- 2.Rxd5#
- 2.Rf5#
- 2.Qxd5#
- 1...Re7
- 2.Qxf4#
- 1...Re8
- 2.Qxf4#
- 1...Se3
- 2.Sf7#
- 2.Qxf4#
- 1...Rxf6!
- threat
- 1.Qxc3+?
- 1...Qd4
- 2.Qxd4#
- 1...Sxc3+!
- 1...Qd4
- 1.Sd2?
- Keys
- 1.Sc5!
- threat
- 2.Rxd5#
- 2.Qxd5#
- 2.Qxf4#
- 1...Kd6+
- 2.Rxe6#
- 1...Qxf3+
- 2.Sxf3#
- 1...Qe4+
- 2.Qxe4#
- 1...Qxd3+
- 2.Scxd3#
- 1...Qxc4
- 2.Sd7#
- 1...Qxc5
- 2.Qxe6#
- 2.Qe4#
- 2.Qxf4#
- 1...Rxc5
- 2.Qxf4#
- 1...Rxf6
- 2.Rxd5#
- 2.Qxd5#
- 1...Qc6
- 2.Qd4#
- 2.Qxf4#
- 1...Qb7
- 2.Sd7#
- 2.Qxe6#
- 2.Qd4#
- 2.Qxf4#
- 1...Qa8
- 2.Sd7#
- 2.Qxe6#
- 2.Qd4#
- 2.Qxf4#
- 1...Qd4
- 2.Qxe6#
- 2.Qxd4#
- 1...Qd6
- 2.Qe4#
- 2.Qxf4#
- 1...Qd7
- 2.Sxd7#
- 2.Qe4#
- 2.Qxf4#
- 1...Qd8
- 2.Qxe6#
- 2.Qe4#
- 2.Qxf4#
- 1...Ra4
- 2.Rxd5#
- 2.Qxd5#
- 1...Rd6
- 2.Qxf4#
- 1...Se3
- 2.Qxf4#
- 1...c6
- 2.Qxf4#
- threat
- 1.Sc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 3
- Sets
- Q(e);CHECK,OGATE,XS(G)::QAR1(F),XQ(e)
- Q(e);N_GUARD::QAB1(F)
- Q(e);CHECK,XR(D)::S(A),XQ(e)
- Q(e);OGATE::QAR1(F),XR(g)
- Tries
- Try
- S(G);
- Threat
- QAB1(F),XP(c)
- Vars
- Q(e);CHECK,N_GUARD::QAR1(F),XQ(e)
- Q(e);CHECK,XR(D)::S(A),XQ(e)
- Q(e);P_PINR(D),XQ(F)::S(G),XQ(e)
- Refutation
- R(g);XR(I)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,XP(E)::S(A),XQ(e)
- Q(e);CHECK,N_GUARD::QAR1(F),XQ(e)
- Q(e);P_PINR(D),XQ(F)::S(G)
- S(a);XS(G)::QAB1(F),XP(c)
- R(d);::QAB1(F),XP(c)
- S(a);::QAB1(F),XP(c)
- Refutation
- R(g);XR(I)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,XP(E)::S(A),XQ(e)
- Q(e);CHECK,N_GUARD::QAR1(F),XQ(e)
- Q(e);CHECK,XR(D)::S(A),XQ(e)
- Q(e);P_PINR(D),XQ(F)::R1(I)
- R(d);::QAB1(F),XP(c)
- R(g);::QAB1(F),XP(c)
- S(a);::QAB1(F),XP(c)
- Refutation
- R(g);XR(I)
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- Q(e);CHECK,XP(E)::S(A),XQ(e)
- Q(e);CHECK,N_GUARD::QAR1(F),XQ(e)
- Q(e);CHECK,XR(D)::S(A),XQ(e)
- R(g);XS(G)::QAB1(F),XP(c)
- P(h);XS(G)::QAB1(F),XP(c)
- R(g);::QAB1(F),XP(c)
- Refutation
- R(g);XR(I)
- Try
- Q(F);CHECK,XP(b)
- Vars
- Q(e);N_GUARD,P_SPINQ(e)::QAB1(F),XQ(e)
- Refutation
- S(a);CHECK,XQ(F)
- Try
- Actual
- S(G);
- Threat
- DUALS(3)
- Vars
- K(f);CHECK,P_SPINQ(e),P_SPINR(g),S_FLIGHT::R1(I),XR(g)
- Q(e);CHECK,XP(E)::S(A),XQ(e)
- Q(e);CHECK,N_GUARD::QAR1(F),XQ(e)
- Q(e);CHECK,XR(D)::S(G),XQ(e)
- Q(e);N_GUARD,P_PINR(D),XQ(F)::S(G)
- R(d);XS(G)::QAB1(F),XP(c)
- R(g);::QAB1(F),XP(c)
- S(a);::QAB1(F),XP(c)
- P(h);::QAB1(F),XP(c)
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).