MESON Chess Problem Database
Problem Display
PID: 64588 (3K1Q2/3P2p1/1N2p3/pn1Pk1p1/R3N1P1/3P4/3Pp3/4Bn2 w - - 0 1)
Promislo, Charles
4th Prize, Good Companions (April Complete Blocks), 1920
#2
11 + 8
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Sxd2
- 2.Bg3#
- 1...Sh2
- 2.Bg3#
- 1...Se3
- 2.Bg3#
- 1...Sg3
- 2.Bxg3#
- 1...Sa3
- 2.Qd6#
- 1...Sc3
- 2.Qd6#
- 1...Sd4
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...exd5
- 2.Qf5#
- 1...g6
- 2.Qf6#
- 1...Sxd2
- Tries
- 1.Kc8?
- 1...Sd6+
- 2.Qxd6#
- 1...Sxd2
- 2.Bg3#
- 1...exd5
- 2.Qf5#
- 1...Sh2
- 2.Bg3#
- 1...Se3
- 2.Bg3#
- 1...Sg3
- 2.Bxg3#
- 1...Sa3
- 2.Qd6#
- 1...Sc3
- 2.Qd6#
- 1...Sd4
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...g6
- 2.Qf6#
- 1...Sa7+!
- 1...Sd6+
- 1.Ke8?
- 1...Sd6+
- 2.Qxd6#
- 1...Sxd2
- 2.Bg3#
- 1...exd5
- 2.Qf5#
- 1...Sh2
- 2.Bg3#
- 1...Se3
- 2.Bg3#
- 1...Sg3
- 2.Bxg3#
- 1...Sa3
- 2.Qd6#
- 1...Sc3
- 2.Qd6#
- 1...Sd4
- 2.Qd6#
- 1...Sa7
- 2.Qd6#
- 1...g6
- 2.Qf6#
- 1...Sc7+!
- 1...Sd6+
- 1.Sc3?
- threat
- 2.Re4#
- 1...Sxd2
- 2.Bg3#
- 1...exd5
- 2.Qe7#
- 1...Sg3
- 2.Bxg3#
- 1...Sd4
- 2.Sc4#
- 1...Sd6
- 2.Qxg7#
- 2.d4#
- 1...Sxc3!
- threat
- 1.Sc5?
- threat
- 2.Re4#
- 1...Sxd2
- 2.Bg3#
- 1...exd5
- 2.Qe7#
- 1...Sg3
- 2.Bxg3#
- 1...Sc3
- 2.d4#
- 1...Sd6
- 2.Qxg7#
- 2.d4#
- 1...Sd4!
- threat
- 1.Sxg5?
- threat
- 2.Sf3#
- 2.Re4#
- 2.Qf4#
- 1...Sxd2
- 2.Bg3#
- 2.Qf4#
- 1...exd5
- 2.Qe7#
- 2.Qf4#
- 1...Sh2
- 2.Bg3#
- 2.Re4#
- 2.Qf4#
- 1...Sg3
- 2.Sf3#
- 2.Bxg3#
- 2.Qf4#
- 1...Sc3
- 2.Sf3#
- 2.Qf4#
- 2.d4#
- 1...Sd6
- 2.Sf3#
- 2.Qxg7#
- 2.Qf4#
- 2.d4#
- 1...Sd4!
- threat
- 1.Sc4+?
- 1...Kxd5
- 2.Qc5#
- 1...Kd4!
- 1...Kxd5
- 1.Rc4?
- 1...Sxd2
- 2.Bg3#
- 1...exd5
- 2.Qf5#
- 1...Sd4
- 2.Qd6#
- 1...Sh2
- 2.Bg3#
- 1...Se3
- 2.Bg3#
- 1...Sg3
- 2.Bxg3#
- 1...Sa3
- 2.Qd6#
- 1...Sc3
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...g6
- 2.Qf6#
- 1...a4!
- 1...Sxd2
- 1.Qe7?
- threat
- 2.Qxg5#
- 1...Sd4
- 2.Qd6#
- 1...Se3
- 2.Bg3#
- 1...Sg3
- 2.Bxg3#
- 1...Sd6
- 2.Qxd6#
- 1...Kf4!
- threat
- 1.Qf3?
- 1...Sxd2
- 2.Bg3#
- 2.Qg3#
- 1...exd5
- 2.Qf5#
- 1...Sh2
- 2.Bg3#
- 2.Qg3#
- 1...Se3
- 2.Bg3#
- 2.Qg3#
- 1...Sg3
- 2.Bxg3#
- 2.Qxg3#
- 1...Sa3
- 2.d4#
- 1...Sc3
- 2.d4#
- 1...Sd6
- 2.d4#
- 1...Sa7
- 2.d4#
- 1...Sc7
- 2.d4#
- 1...g6
- 2.Qf6#
- 1...Sd4!
- 1...Sxd2
- 1.Kc8?
- Keys
- 1.Sd6!
- threat
- 2.Re4#
- 1...Sxd2
- 2.Bg3#
- 1...Sxd6
- 2.Qxg7#
- 1...exd5
- 2.Qe7#
- 1...Sd4
- 2.Sdc4#
- 1...Sg3
- 2.Bxg3#
- 1...Sc3
- 2.d4#
- threat
- 1.Sd6!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- S(a);N_GUARD,XP(B)::B(A)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- S(d);N_GUARD::QAB1(K)
- S(d);N_GUARD::QAB1(K),XS(d)
- P(g);N_GUARD,XP(G)::QAR1(K)
- P(h);N_GUARD::QAB1(K)
- Tries
- Try
- K(J);P-FLIGHT
- Vars
- S(d);CHECK,N_GUARD::QAB1(K),XS(d)
- S(a);N_GUARD,XP(B)::B(A)
- P(g);N_GUARD,XP(G)::QAR1(K)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- S(d);N_GUARD::QAB1(K)
- P(h);N_GUARD::QAB1(K)
- Refutation
- S(d);CHECK
- Try
- K(J);P-FLIGHT
- Vars
- S(d);CHECK,N_GUARD::QAB1(K),XS(d)
- S(a);N_GUARD,XP(B)::B(A)
- P(g);N_GUARD,XP(G)::QAR1(K)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- S(d);N_GUARD::QAB1(K)
- P(h);N_GUARD::QAB1(K)
- Refutation
- S(d);CHECK
- Try
- S(E);
- Threat
- R1(D)
- Vars
- S(a);N_GUARD,XP(B)::B(A)
- P(g);OGATEB,XP(G)::QAR2(K)
- S(a);N_GUARD::B(A),XS(a)
- S(d);SBLOCK::S(H)
- Refutation
- S(d);XS(E)
- Try
- S(E);
- Threat
- R1(D)
- Vars
- S(a);N_GUARD,XP(B)::B(A)
- P(g);OGATEB,XP(G)::QAR2(K)
- S(a);N_GUARD::B(A),XS(a)
- S(d);N_GUARD::P(C)
- Refutation
- S(d);
- Try
- S(E);XP(f)
- Threat
- DUALS(3)
- Refutation
- S(d);
- Try
- S(H);CHECK
- Vars
- K(e);P-FLIGHT,XP(G)::QAR1(K)
- Refutation
- K(e);S_FLIGHT
- Try
- R(D);
- Vars
- S(a);N_GUARD,XP(B)::B(A)
- P(g);N_GUARD,XP(G)::QAR1(K)
- S(d);N_GUARD::QAB1(K)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- S(d);N_GUARD::QAB1(K),XS(d)
- P(h);N_GUARD::QAB1(K)
- Refutation
- P(c);
- Try
- Q(K);P_PINP(g)
- Threat
- QAR2(K),XP(f)
- Vars
- S(d);N_GUARD::QAB1(K)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- S(d);N_GUARD::QAB1(K),XS(d)
- Refutation
- K(e);N_SPINP(g),S_FLIGHT
- Try
- Q(K);
- Vars
- P(g);N_GUARD,XP(G)::QAR1(K)
- S(d);N_GUARD::P(C)
- P(h);N_GUARD::QAB1(K)
- Refutation
- S(d);
- Try
- Actual
- S(E);
- Threat
- R1(D)
- Vars
- S(a);N_GUARD,XP(B)::B(A)
- S(d);SBLOCK,XS(E)::QAB(K),XP(h)
- P(g);OGATEB,XP(G)::QAR2(K)
- S(d);SBLOCK::S(E)
- S(a);N_GUARD::B(A),XS(a)
- S(d);N_GUARD::P(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).