MESON Chess Problem Database
Problem Display
PID: 64622 (8/Np6/bp3p2/bQ3p2/Rpnk1n2/PR1N1B1p/2P2P1K/8 w - - 0 1)
Hartong, Jan
2nd Prize=, Good Companions (April Complete Blocks), 1920
#2
10 + 11
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Bxb5
- 2.Sxb5#
- 1...Sb2
- 2.c3#
- 1...Sd2
- 2.c3#
- 1...Sxa3
- 2.c3#
- 1...Se3
- 2.c3#
- 1...Se5
- 2.c3#
- 1...Sd6
- 2.c3#
- 1...Se2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sxd3
- 2.Rxd3#
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...bxa3
- 2.Rxc4#
- 1...Bxb5
- Tries
- 1.Kh1?
- 1...Bxb5
- 2.Sxb5#
- 1...Sxa3
- 2.c3#
- 1...Sxd3
- 2.Rxd3#
- 2.Qd5#
- 1...bxa3
- 2.Rxc4#
- 1...Sb2
- 2.c3#
- 1...Sd2
- 2.c3#
- 1...Se3
- 2.c3#
- 1...Se5
- 2.c3#
- 1...Sd6
- 2.c3#
- 1...Se2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...h2!
- 1...Bxb5
- 1.Sc1?
- 1...Sxa3
- 2.c3#
- 1...bxa3
- 2.Rxc4#
- 1...Sd5
- 2.Qxd5#
- 1...Sb2
- 2.c3#
- 1...Sd2
- 2.c3#
- 1...Se3
- 2.c3#
- 2.fxe3#
- 1...Se5
- 2.c3#
- 1...Sd6
- 2.c3#
- 1...Se2
- 2.Sxe2#
- 2.Rd3#
- 2.Qd5#
- 1...Sg2
- 2.Se2#
- 2.Rd3#
- 2.Qd5#
- 1...Sd3
- 2.Se2#
- 2.Rxd3#
- 2.Qd5#
- 1...Sh5
- 2.Se2#
- 2.Rd3#
- 2.Qd5#
- 1...Se6
- 2.Se2#
- 2.Rd3#
- 2.Qd5#
- 1...Sg6
- 2.Se2#
- 2.Rd3#
- 2.Qd5#
- 1...Bxb5!
- 1...Sxa3
- 1.Se1?
- 1...Sxa3
- 2.c3#
- 1...bxa3
- 2.Rxc4#
- 1...Sd5
- 2.Qxd5#
- 1...Sb2
- 2.c3#
- 1...Sd2
- 2.c3#
- 1...Se3
- 2.c3#
- 2.fxe3#
- 1...Se5
- 2.c3#
- 1...Sd6
- 2.c3#
- 1...Se2
- 2.Rd3#
- 2.Qd5#
- 1...Sg2
- 2.Rd3#
- 2.Qd5#
- 1...Sd3
- 2.Rxd3#
- 2.Qd5#
- 1...Sh5
- 2.Rd3#
- 2.Qd5#
- 1...Se6
- 2.Rd3#
- 2.Qd5#
- 1...Sg6
- 2.Rd3#
- 2.Qd5#
- 1...Bxb5!
- 1...Sxa3
- 1.Sb2?
- 1...Sxb2
- 2.c3#
- 1...Sxa3
- 2.c3#
- 1...bxa3
- 2.Rxc4#
- 1...Sd5
- 2.Qxd5#
- 1...Sd2
- 2.c3#
- 1...Se3
- 2.c3#
- 2.fxe3#
- 1...Se5
- 2.c3#
- 1...Sd6
- 2.c3#
- 1...Se2
- 2.Rd3#
- 2.Qd5#
- 1...Sg2
- 2.Rd3#
- 2.Qd5#
- 1...Sd3
- 2.Rxd3#
- 2.Qd5#
- 1...Sh5
- 2.Rd3#
- 2.Qd5#
- 1...Se6
- 2.Rd3#
- 2.Qd5#
- 1...Sg6
- 2.Rd3#
- 2.Qd5#
- 1...Bxb5!
- 1...Sxb2
- 1.Sxf4?
- threat
- 2.Se2#
- 2.Se6#
- 2.Rd3#
- 2.Qd5#
- 1...Sb2
- 2.Se2#
- 2.Se6#
- 2.Qd5#
- 2.c3#
- 1...Se3
- 2.Se2#
- 2.Se6#
- 2.Rd3#
- 2.c3#
- 2.fxe3#
- 1...Se5
- 2.Se2#
- 2.Se6#
- 2.Qd5#
- 2.c3#
- 1...Bxb5!
- threat
- 1.Sc8?
- 1...Sxa3
- 2.c3#
- 1...Sxd3
- 2.Rxd3#
- 2.Qd5#
- 1...bxa3
- 2.Rxc4#
- 1...Sb2
- 2.c3#
- 1...Sd2
- 2.c3#
- 1...Se3
- 2.c3#
- 1...Se5
- 2.c3#
- 1...Sd6
- 2.c3#
- 1...Se2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Bxb5!
- 1...Sxa3
- 1.Bh1?
- 1...Bxb5
- 2.Sxb5#
- 1...Sxa3
- 2.c3#
- 1...Sxd3
- 2.Rxd3#
- 2.Qd5#
- 1...bxa3
- 2.Rxc4#
- 1...Sb2
- 2.c3#
- 1...Sd2
- 2.c3#
- 1...Se3
- 2.c3#
- 1...Se5
- 2.c3#
- 1...Sd6
- 2.c3#
- 1...Se2
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Sg2!
- 1...Bxb5
- 1.Bc6?
- 1...Bxb5
- 2.Sxb5#
- 1...Sxa3
- 2.c3#
- 1...Sxd3
- 2.Rxd3#
- 2.Qd5#
- 1...bxa3
- 2.Rxc4#
- 1...Sd5
- 2.Qxd5#
- 1...Sb2
- 2.c3#
- 1...Sd2
- 2.c3#
- 1...Se3
- 2.c3#
- 1...Se5
- 2.c3#
- 1...Sd6
- 2.c3#
- 1...Se2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sh5
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...bxc6!
- 1...Bxb5
- 1.Bxb7?
- 1...Bxb5
- 2.Sxb5#
- 1...Sxa3
- 2.c3#
- 1...Sxd3
- 2.Rxd3#
- 2.Qd5#
- 1...bxa3
- 2.Rxc4#
- 1...Sd5
- 2.Qxd5#
- 1...Sb2
- 2.c3#
- 1...Sd2
- 2.c3#
- 1...Se3
- 2.c3#
- 1...Se5
- 2.c3#
- 1...Sd6
- 2.c3#
- 1...Se2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sh5
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Bxb7!
- 1...Bxb5
- 1.Raxb4?
- threat
- 2.Rxc4#
- 1...Bxb5
- 2.Sxb5#
- 1...Bxb4!
- threat
- 1.Qxa6?
- threat
- 2.Sb5#
- 1...Sxa3
- 2.c3#
- 1...bxa6
- 2.Sc6#
- 1...Sb2
- 2.c3#
- 1...Sd2
- 2.c3#
- 1...Se3
- 2.c3#
- 1...Se5
- 2.c3#
- 1...Sd6
- 2.c3#
- 1...b5
- 2.Sxb5#
- 1...Sxd3!
- threat
- 1.Qd7+?
- 1...Sd5
- 2.Qxd5#
- 1...Sd6!
- 1...Sd5
- 1.axb4?
- 1...Bxb5
- 2.Sxb5#
- 1...Sxd3
- 2.Rxd3#
- 2.Qd5#
- 2.c3#
- 1...Sb2
- 2.c3#
- 1...Sd2
- 2.c3#
- 1...Sa3
- 2.c3#
- 1...Se3
- 2.c3#
- 1...Se5
- 2.c3#
- 1...Sd6
- 2.c3#
- 1...Se2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Bxb4!
- 1...Bxb5
- 1.Kh1?
- Keys
- 1.Qc6!
- 1...Sxa3
- 2.Qc3#
- 1...Sxd3
- 2.Qd5#
- 1...bxa3
- 2.Qxf6#
- 1...bxc6
- 2.Sxc6#
- 1...Bb5
- 2.Sxb5#
- 1...Sb2
- 2.Qc3#
- 1...Sd2
- 2.Qc3#
- 1...Se3
- 2.Qc3#
- 1...Se5
- 2.Qc3#
- 1...Sd6
- 2.Qc3#
- 1...Se2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...b5
- 2.Qc5#
- 1...Sxa3
- 1.Qc6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(h);XQ(I)::S(J),XB(h)
- S(c);P_SPINP(b)::P(A)
- S(c);P_SPINP(b),XP(D)::P(A)
- S(e);N_GUARD::QAR1(I)
- S(e);N_GUARD::QAR1(I),XS(e)
- P(b);OGATE,P_SPINS(c),XP(D)::R1(H),XS(c)
- Tries
- Try
- K(C);P-FLIGHT
- Vars
- B(h);XQ(I)::S(J),XB(h)
- S(c);P_SPINP(b),XP(D)::P(A)
- P(b);OGATE,P_SPINS(c),XP(D)::R1(H),XS(c)
- S(c);P_SPINP(b)::P(A)
- S(e);N_GUARD::QAR1(I)
- S(e);N_GUARD::QAR1(I),XS(e)
- Refutation
- P(a);
- Try
- S(F);
- Vars
- S(c);P_SPINP(b),XP(D)::P(A)
- P(b);OGATE,P_SPINS(c),XP(D)::R1(H),XS(c)
- S(e);N_GUARD::QAR1(I),XS(e)
- S(c);P_SPINP(b)::P(A)
- Refutation
- B(h);XQ(I)
- Try
- S(F);
- Vars
- S(c);P_SPINP(b),XP(D)::P(A)
- P(b);OGATE,P_SPINS(c),XP(D)::R1(H),XS(c)
- S(e);N_GUARD::QAR1(I),XS(e)
- S(c);P_SPINP(b)::P(A)
- Refutation
- B(h);XQ(I)
- Try
- S(F);
- Vars
- S(c);P_SPINP(b),XS(F)::P(A)
- S(c);P_SPINP(b),XP(D)::P(A)
- P(b);OGATE,P_SPINS(c),XP(D)::R1(H),XS(c)
- S(e);N_GUARD::QAR1(I),XS(e)
- S(c);P_SPINP(b)::P(A)
- Refutation
- B(h);XQ(I)
- Try
- S(F);XS(e)
- Threat
- DUALS(4)
- Refutation
- B(h);XQ(I)
- Try
- S(J);
- Vars
- S(c);P_SPINP(b),XP(D)::P(A)
- P(b);OGATE,P_SPINS(c),XP(D)::R1(H),XS(c)
- S(c);P_SPINP(b)::P(A)
- S(e);N_GUARD::QAR1(I)
- S(e);N_GUARD::QAR1(I),XS(e)
- Refutation
- B(h);XQ(I)
- Try
- B(G);
- Vars
- B(h);XQ(I)::S(J),XB(h)
- S(c);P_SPINP(b),XP(D)::P(A)
- P(b);OGATE,P_SPINS(c),XP(D)::R1(H),XS(c)
- S(c);P_SPINP(b)::P(A)
- S(e);N_GUARD::QAR1(I)
- S(e);N_GUARD::QAR1(I),XS(e)
- Refutation
- S(e);
- Try
- B(G);
- Vars
- B(h);XQ(I)::S(J),XB(h)
- S(c);P_SPINP(b),XP(D)::P(A)
- P(b);OGATE,P_SPINS(c),XP(D)::R1(H),XS(c)
- S(e);N_GUARD::QAR1(I),XS(e)
- S(c);P_SPINP(b)::P(A)
- S(e);N_GUARD::QAR1(I)
- Refutation
- P(k);XB(G)
- Try
- B(G);XP(k)
- Vars
- B(h);XQ(I)::S(J),XB(h)
- S(c);P_SPINP(b),XP(D)::P(A)
- P(b);OGATE,P_SPINS(c),XP(D)::R1(H),XS(c)
- S(e);N_GUARD::QAR1(I),XS(e)
- S(c);P_SPINP(b)::P(A)
- S(e);N_GUARD::QAR1(I)
- Refutation
- B(h);XB(G)
- Try
- R(H);P_PINS(c),XP(b)
- Threat
- R1(H),XS(c)
- Vars
- B(h);XQ(I)::S(J),XB(h)
- Refutation
- B(f);N_SPINS(c),XR(H)
- Try
- Q(I);XB(h)
- Threat
- S(J)
- Vars
- S(c);P_SPINP(b),XP(D)::P(A)
- P(k);N_GUARD,XQ(I)::S(J)
- S(c);P_SPINP(b)::P(A)
- P(i);::S(J),XP(i)
- Refutation
- S(e);XS(F)
- Try
- Q(I);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAR1(I),XS(e)
- Refutation
- S(c);P_SPINP(b),P_SPINS(c)
- Try
- P(D);XP(b)
- Vars
- B(h);XQ(I)::S(J),XB(h)
- S(c);::P(A)
- S(e);N_GUARD::QAR1(I)
- S(e);N_GUARD::QAR1(I),XS(e)
- Refutation
- B(f);XP(D)
- Try
- Actual
- Q(I);
- Vars
- S(c);OGATE,P_SPINP(b),XP(D)::QAB1(I)
- S(e);N_GUARD,XS(F)::QAR1(I)
- P(b);P_SPINS(c),XP(D)::QAB(I),XP(j)
- P(k);XQ(I)::S(J),XP(k)
- B(h);N_GUARD::S(J),XB(h)
- S(c);OGATE,P_SPINP(b)::QAB1(I)
- S(e);N_GUARD::QAR1(I)
- S(e);N_GUARD::QAR1(I),XS(e)
- P(i);N_GUARD::QAB1(I)
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).