MESON Chess Problem Database
Problem Display
PID: 198673 (8/1pQ1p3/1P2P3/3p1N2/1p2k1B1/1P3nB1/4P1n1/1b5K w - - 0 1)
Amos, FJ
Morning Post, 1921
#2
9 + 8
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Ba2
- 2.Qc2#
- 1...Bc2
- 2.Qxc2#
- 1...Bd3
- 2.exf3#
- 1...Sge1
- 2.Qf4#
- 1...Se3
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sgh4
- 2.Qf4#
- 1...Sfe1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Sfh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...d4
- 2.Qxb7#
- 1...Ba2
- Tries
- 1.Bh2?
- 1...d4
- 2.Qxb7#
- 1...Ba2
- 2.Qc2#
- 1...Bc2
- 2.Qxc2#
- 1...Bd3
- 2.exf3#
- 1...Sge1
- 2.Qf4#
- 1...Se3
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sgh4
- 2.Qf4#
- 1...Sfe1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Sfh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...Sxh2!
- 1...d4
- 1.Bh3?
- 1...d4
- 2.Qxb7#
- 1...Ba2
- 2.Qc2#
- 1...Bc2
- 2.Qxc2#
- 1...Sge1
- 2.Qf4#
- 1...Se3
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sgh4
- 2.Qf4#
- 1...Sfe1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Sfh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...Bd3!
- 1...d4
- 1.Qc3?
- threat
- 2.Qxf3#
- 2.exf3#
- 1...d4
- 2.Qxf3#
- 1...Bd3
- 2.Qxd3#
- 2.exd3#
- 2.exf3#
- 1...Sge1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 2.exf3#
- 1...Sf4
- 2.Qe3#
- 2.exf3#
- 1...Sgh4
- 2.Qe3#
- 1...Sfe1
- 2.Qd4#
- 2.Qe5#
- 1...Sg1
- 2.Qd4#
- 2.Qe5#
- 1...Sd2
- 2.Qd4#
- 2.Qe5#
- 1...Sh2
- 2.Qd4#
- 2.Qe5#
- 1...Sd4
- 2.Qxd4#
- 1...Sfh4
- 2.Qd4#
- 2.Qe5#
- 1...Se5
- 2.Qd4#
- 2.Qxe5#
- 1...Sg5
- 2.Qd4#
- 2.Qe5#
- 1...bxc3!
- threat
- 1.Qc4+?
- 1...Sd4
- 2.Qxd4#
- 1...d4
- 2.exf3#
- 1...dxc4!
- 1...Sd4
- 1.Bh2?
- Keys
- 1.Qc5!
- 1...Sf4
- 2.Qe3#
- 1...Ba2
- 2.Qc2#
- 1...Bc2
- 2.Qxc2#
- 1...Bd3
- 2.exf3#
- 1...Sge1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sgh4
- 2.Qe3#
- 1...Sfe1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sh2
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sfh4
- 2.Qd4#
- 1...Se5
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 1...d4
- 2.Bxf3#
- 1...Sf4
- 1.Qc5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 13
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::QAB(I)
- B(a);N_GUARD::QAB(I),XB(a)
- B(a);SBLOCK::P(B),XS(c)
- S(b);N_GUARD::QAR1(I)
- S(b);N_GUARD::QAR1(I),XS(b)
- S(c);N_GUARD::QAR1(I)
- S(c);N_GUARD::QAR1(I),XS(c)
- P(f);OGATEB::QAB(I),XP(g)
- Tries
- Try
- B(D);
- Vars
- P(f);OGATEB::QAB(I),XP(g)
- B(a);N_GUARD::QAB(I)
- B(a);N_GUARD::QAB(I),XB(a)
- B(a);SBLOCK::P(B),XS(c)
- S(b);N_GUARD::QAR1(I)
- S(b);N_GUARD::QAR1(I),XS(b)
- S(c);N_GUARD::QAR1(I)
- S(c);N_GUARD::QAR1(I),XS(c)
- Refutation
- S(c);XB(D)
- Try
- B(E);
- Vars
- P(f);OGATEB::QAB(I),XP(g)
- B(a);N_GUARD::QAB(I)
- B(a);N_GUARD::QAB(I),XB(a)
- S(b);N_GUARD::QAR1(I)
- S(b);N_GUARD::QAR1(I),XS(b)
- S(c);N_GUARD::QAR1(I)
- S(c);N_GUARD::QAR1(I),XS(c)
- Refutation
- B(a);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- P(f);::QAB1(I),XS(c)
- S(b);N_GUARD::QAR1(I)
- S(c);N_GUARD::QAR1(I),XS(c)
- Refutation
- P(d);XQ(I)
- Try
- Q(I);CHECK
- Vars
- S(c);N_GUARD,P_SPINS(c)::QAR1(I),XS(c)
- P(f);P_SPINP(f)::P(B),XS(c)
- Refutation
- P(f);XQ(I)
- Try
- Actual
- Q(I);
- Vars
- S(b);N_GUARD::QAR1(I)
- B(a);N_GUARD::QAB(I)
- B(a);N_GUARD::QAB(I),XB(a)
- B(a);SBLOCK::P(B),XS(c)
- S(b);N_GUARD::QAR1(I),XS(b)
- S(c);N_GUARD::QAR1(I)
- S(c);N_GUARD::QAR1(I),XS(c)
- P(f);::B(E),XS(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).