MESON Chess Problem Database
Problem Display
PID: 64623 (1N2b3/2n1K3/2P1B1Pp/1p2k2p/1P5R/pQ1pr2N/n5pP/6B1 w - - 0 1)
Paluzie y Lucena, Jozefo
Good Companions (April), 1915
#2
11 + 11
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Bd4#
- 1...Re2
- 2.Bd4#
- 1...Rf3
- 2.Bd4#
- 1...Rg3
- 2.Bd4#
- 1...Rxh3
- 2.Bd4#
- 1...Re4
- 2.Rxh5#
- 1...Bxc6
- 2.Sxc6#
- 1...Bxg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sc1
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sxb4
- 2.Qc3#
- 1...Sd5+
- 2.Qxd5#
- 1...Sa6
- 2.Qd5#
- 1...Sxe6
- 2.Qxe6#
- 1...Sa8
- 2.Qd5#
- 1...d2
- 2.Qxe3#
- 1...Re1
- Tries
- 1.Sg5?
- 1...Sd5+
- 2.Qxd5#
- 1...Bxc6
- 2.Sf7#
- 2.Sxc6#
- 1...Bxg6
- 2.Sd7#
- 1...Sxb4
- 2.Qc3#
- 1...Sxe6
- 2.Qxe6#
- 1...Re1
- 2.Sf3#
- 2.Bd4#
- 1...Re2
- 2.Sf3#
- 2.Bd4#
- 1...Rf3
- 2.Sxf3#
- 2.Bd4#
- 2.Re4#
- 1...Rg3
- 2.Bd4#
- 2.Re4#
- 1...Rh3
- 2.Bd4#
- 2.Re4#
- 1...Re4
- 2.Sf3#
- 2.Rxe4#
- 1...Bd7
- 2.Sf7#
- 2.Sxd7#
- 1...Bf7
- 2.Sxf7#
- 2.Sd7#
- 1...Sc1
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sa6
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...d2
- 2.Qxe3#
- 1...hxg5!
- 1...Sd5+
- 1.Qxa2?
- threat
- 2.Qa1#
- 1...Sd5+
- 2.Qxd5#
- 1...Sxe6
- 2.Qxe6#
- 1...Re1
- 2.Bd4#
- 1...Re2
- 2.Bd4#
- 1...Re4
- 2.Rxh5#
- 1...d2!
- threat
- 1.Qc4?
- threat
- 2.Rxh5#
- 2.Qd4#
- 2.Qf4#
- 1...Sd5+
- 2.Qxd5#
- 1...Rxh3
- 2.Bd4#
- 2.Re4#
- 2.Qd4#
- 2.Qe4#
- 2.Qf4#
- 1...Bxg6
- 2.Sd7#
- 2.Qd4#
- 2.Qf4#
- 1...Sxe6
- 2.Qxe6#
- 1...Rf3
- 2.Bd4#
- 2.Re4#
- 2.Qd4#
- 2.Qe4#
- 1...Rg3
- 2.Bd4#
- 2.Re4#
- 2.Qd4#
- 2.Qe4#
- 2.Qf4#
- 1...Re4
- 2.Rxe4#
- 2.Rxh5#
- 2.Qxe4#
- 1...bxc4!
- threat
- 1.Qb2+?
- 1...Sc3
- 2.Qxc3#
- 1...axb2!
- 1...Sc3
- 1.g7?
- 1...Sd5+
- 2.Qxd5#
- 1...Rxh3
- 2.Bd4#
- 1...Bxc6
- 2.Sxc6#
- 1...Sxb4
- 2.Qc3#
- 1...Sxe6
- 2.Qxe6#
- 1...Re1
- 2.Bd4#
- 1...Re2
- 2.Bd4#
- 1...Rf3
- 2.Bd4#
- 1...Rg3
- 2.Bd4#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sc1
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sa6
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...d2
- 2.Qxe3#
- 1...Re4!
- 1...Sd5+
- 1.Sg5?
- Keys
- 1.Sf2!
- 1...Sd5+
- 2.Qxd5#
- 1...Bxc6
- 2.Sxc6#
- 1...Bxg6
- 2.Sd7#
- 1...Sxb4
- 2.Qc3#
- 1...Sxe6
- 2.Qxe6#
- 1...Re4
- 2.Sxd3#
- 2.Rxe4#
- 1...Re1
- 2.Sxd3#
- 1...Re2
- 2.Sxd3#
- 1...Rf3
- 2.Re4#
- 1...Rg3
- 2.Re4#
- 1...Rh3
- 2.Re4#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sc1
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sa6
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...d2
- 2.Qxe3#
- 1...Sd5+
- 1.Sf2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- R(e);OGATE::B(A)
- R(e);OGATE,XS(D)::B(A)
- R(e);SBLOCK::R(F),XP(h)
- B(k);XP(G)::S(K),XB(k)
- B(k);N_GUARD,XP(I)::S(K)
- B(k);N_GUARD::S(K),XB(k)
- B(k);N_GUARD::S(K)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- S(a);N_GUARD,XP(E)::QAB(C)
- S(j);CHECK,N_GUARD::QAR1(C),XS(j)
- S(j);N_GUARD::QAR1(C)
- S(j);OGATE,XB(H)::QAR1(C),XS(j)
- P(d);OGATE::QAR2(C),XR(e)
- Tries
- Try
- S(D);
- Vars
- S(j);CHECK,N_GUARD::QAR1(C),XS(j)
- B(k);N_GUARD,XP(I)::S(K)
- S(a);N_GUARD,XP(E)::QAB(C)
- S(j);OGATE,XB(H)::QAR1(C),XS(j)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- S(j);N_GUARD::QAR1(C)
- P(d);OGATE::QAR2(C),XR(e)
- Refutation
- P(i);XS(D)
- Try
- Q(C);XS(a)
- Threat
- QAB(C)
- Vars
- S(j);CHECK,N_GUARD::QAR1(C),XS(j)
- S(j);OGATE,XB(H)::QAR1(C),XS(j)
- R(e);OGATE::B(A)
- R(e);SBLOCK::R(F),XP(h)
- Refutation
- P(d);
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- S(j);CHECK,N_GUARD::QAR1(C),XS(j)
- S(j);OGATE,XB(H)::QAR1(C),XS(j)
- Refutation
- P(f);XQ(C)
- Try
- Q(C);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB(C),XS(a)
- Refutation
- P(c);XQ(C)
- Try
- P(I);
- Vars
- S(j);CHECK,N_GUARD::QAR1(C),XS(j)
- R(e);OGATE,XS(D)::B(A)
- B(k);XP(G)::S(K),XB(k)
- S(a);N_GUARD,XP(E)::QAB(C)
- S(j);OGATE,XB(H)::QAR1(C),XS(j)
- R(e);OGATE::B(A)
- B(k);N_GUARD::S(K)
- B(k);N_GUARD::S(K),XB(k)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- S(j);N_GUARD::QAR1(C)
- P(d);OGATE::QAR2(C),XR(e)
- Refutation
- R(e);
- Try
- Actual
- S(D);
- Vars
- S(j);CHECK,N_GUARD::QAR1(C),XS(j)
- B(k);XP(G)::S(K),XB(k)
- B(k);N_GUARD,XP(I)::S(K)
- S(a);N_GUARD,XP(E)::QAB(C)
- S(j);OGATE,XB(H)::QAR1(C),XS(j)
- R(e);N_GUARD::S(D),XP(d)
- R(e);N_GUARD::R1(F)
- B(k);N_GUARD::S(K),XB(k)
- B(k);N_GUARD::S(K)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD::QAB(C),XS(a)
- S(j);N_GUARD::QAR1(C)
- P(d);OGATE::QAR2(C),XR(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).