MESON Chess Problem Database
Problem Display
PID: 194923 (4bBQ1/np2P2p/1Rpk3P/2nNpB2/1P1NP2K/1P5P/8/8 w - - 0 1)
Meiners, Willem Barend Hendrik
1st Prize, Tijdschrift vd NSB, 1918
#2
13 + 8
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Bh5
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bg6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bd7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bf7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sxb3
- 2.Qe6#
- 1...Sd3
- 2.Qe6#
- 1...Sa4
- 2.Qe6#
- 1...Sxe4
- 2.Qe6#
- 1...Sa6
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Sd7
- 2.Qe6#
- 1...Sb5
- 2.Sxb5#
- 1...Sc8
- 2.Sb5#
- 1...exd4
- 2.Qg3#
- 1...Bh5
- Tries
- 1.Bg4?
- 1...Sxb3
- 2.Qe6#
- 1...Sxe4
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Sb5
- 2.Sxb5#
- 1...Bh5
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bg6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bd7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bf7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sd3
- 2.Qe6#
- 1...Sa4
- 2.Qe6#
- 1...Sa6
- 2.Qe6#
- 1...Sd7
- 2.Sf5#
- 2.Qe6#
- 1...Sc8
- 2.Sb5#
- 1...exd4!
- 1...Sxb3
- 1.Be6?
- threat
- 2.Sf5#
- 1...Sxe6
- 2.Qxe6#
- 1...Bg6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bf7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...exd4!
- threat
- 1.Bc8?
- threat
- 2.Sf5#
- 1...exd4
- 2.Qg3#
- 1...Bg6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bd7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sxc8!
- threat
- 1.Rxc6+?
- 1...Bxc6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sxc6
- 2.Sb5#
- 1...bxc6!
- 1...Bxc6
- 1.Qf7?
- 1...Bxf7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sxb3
- 2.Qe6#
- 2.Qf6#
- 1...Sxe4
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Sb5
- 2.Sxb5#
- 1...Bd7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Sd3
- 2.Qe6#
- 2.Qf6#
- 1...Sa4
- 2.Qe6#
- 2.Qf6#
- 1...Sa6
- 2.Qe6#
- 2.Qf6#
- 1...Sd7
- 2.Qe6#
- 1...Sc8
- 2.Sb5#
- 1...exd4!
- 1...Bxf7
- 1.Qg6+?
- 1...Bxg6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Se6
- 2.Qxe6#
- 1...hxg6!
- 1...Bxg6
- 1.Bg4?
- Keys
- 1.Bg7!
- 1...Sxb3
- 2.Qe6#
- 1...Sxe4
- 2.Qe6#
- 1...exd4
- 2.e5#
- 1...Se6
- 2.Qxe6#
- 1...Sb5
- 2.Sxb5#
- 1...Bh5
- 2.Qb8#
- 1...Bg6
- 2.Qb8#
- 1...Bd7
- 2.Qb8#
- 1...Bf7
- 2.Qb8#
- 1...Sd3
- 2.Qe6#
- 1...Sa4
- 2.Qe6#
- 1...Sa6
- 2.Qe6#
- 1...Sd7
- 2.Qe6#
- 1...Sc8
- 2.Sb5#
- 1...Sxb3
- 1.Bg7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD,XP(A)::QAR1(M)
- S(a);N_GUARD::QAR1(M)
- S(a);N_GUARD,XP(E)::QAR1(M)
- S(a);N_GUARD::QAR1(M),XS(a)
- S(e);N_GUARD::S(D),XS(e)
- S(e);N_GUARD::S(D)
- P(b);OGATEB,XS(D)::QAB(M)
- Tries
- Try
- B(H);
- Vars
- S(a);N_GUARD,XP(A)::QAR1(M)
- S(a);N_GUARD,XP(E)::QAR1(M)
- S(a);N_GUARD::QAR1(M),XS(a)
- S(e);N_GUARD::S(D),XS(e)
- S(a);N_GUARD::QAR1(M)
- S(e);N_GUARD::S(D)
- Refutation
- P(b);XS(D)
- Try
- B(H);
- Threat
- S(D)
- Vars
- S(a);OGATE,XB(H)::QAR1(M),XS(a)
- Refutation
- P(b);XS(D)
- Try
- B(H);
- Threat
- S(D)
- Vars
- P(b);OGATEB,XS(D)::QAB(M)
- Refutation
- S(e);XB(H)
- Try
- R(I);CHECK,XP(c)
- Vars
- S(e);SBLOCK,XR(I)::S(D)
- Refutation
- P(f);XR(I)
- Try
- Q(M);
- Vars
- S(a);N_GUARD,XP(E)::QAR1(M)
- S(a);N_GUARD::QAR1(M),XS(a)
- S(e);N_GUARD::S(D),XS(e)
- S(a);N_GUARD::QAR1(M)
- S(e);N_GUARD::S(D)
- Refutation
- P(b);XS(D)
- Try
- Q(M);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR1(M),XS(a)
- Refutation
- P(g);XQ(M)
- Try
- Actual
- B(L);
- Vars
- S(a);N_GUARD,XP(A)::QAR1(M)
- S(a);N_GUARD,XP(E)::QAR1(M)
- P(b);OGATE,XS(D)::P(E)
- S(a);N_GUARD::QAR1(M),XS(a)
- S(e);N_GUARD::S(D),XS(e)
- B(h);OGATE::QAB(M)
- S(a);N_GUARD::QAR1(M)
- S(e);N_GUARD::S(D)
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).