MESON Chess Problem Database
Problem Display
PID: 21535 (3B4/1N5R/2k3KR/1pppppp1/5r1p/1B1N1b1n/7Q/q7 w - - 0 1)
Hartong, Jan
2nd Prize, Good Companions (October Magee TT), 1919
#2
8 + 12
| 3132 | The Good Companion Two-Mover | 1922 |
| 102 | Probleemblad | 2002 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Sxe5#
- 1...Qc1
- 2.Sxe5#
- 1...Qd1
- 2.Sxe5#
- 1...Qf1
- 2.Sxe5#
- 1...Qg1
- 2.Sxe5#
- 1...Qh1
- 2.Sxe5#
- 1...Qa2
- 2.Sxe5#
- 1...Qa3
- 2.Sxe5#
- 1...Qa4
- 2.Sxe5#
- 1...Qa5
- 2.Sxe5#
- 1...Qa6
- 2.Sxe5#
- 1...Qa7
- 2.Sxe5#
- 1...Qa8
- 2.Sxe5#
- 1...Ra4
- 2.Kxf5#
- 1...Rb4
- 2.Kxf5#
- 1...Rc4
- 2.Kxf5#
- 1...Rd4
- 2.Kxf5#
- 2.Sxe5#
- 1...Re4
- 2.Kxf5#
- 1...Rg4
- 2.Kxf5#
- 2.Kh5#
- 1...Bh1
- 2.Kh5#
- 1...Bg2
- 2.Kh5#
- 1...Be4
- 2.Kh5#
- 1...Bh5+
- 2.Kxh5#
- 1...Sg1
- 2.Kxg5#
- 1...Sf2
- 2.Kxg5#
- 1...c4
- 2.Sb4#
- 1...d4
- 2.Sxe5#
- 1...g4
- 2.Kh5#
- 1...Qb1
- Tries
- 1.Sb4+?
- 1...Rxb4
- 2.Kxf5#
- 1...cxb4!
- 1...Rxb4
- 1.Sb4+?
- Keys
- 1.Qa2!
- 1...Bh5+
- 2.Kxh5#
- 1...Qxa2
- 2.Sxe5#
- 1...b4
- 2.Ba4#
- 1...e4
- 2.Bxd5#
- 1...Qb2
- 2.Qa6#
- 1...Qc3
- 2.Qa6#
- 1...Qd4
- 2.Qa6#
- 1...Qb1
- 2.Sxe5#
- 2.Qa6#
- 1...Qc1
- 2.Sxe5#
- 2.Qa6#
- 1...Qd1
- 2.Sxe5#
- 2.Qa6#
- 1...Qe1
- 2.Qa6#
- 1...Qf1
- 2.Sxe5#
- 2.Qa6#
- 1...Qg1
- 2.Sxe5#
- 2.Qa6#
- 1...Qh1
- 2.Sxe5#
- 2.Qa6#
- 1...Ra4
- 2.Kxf5#
- 1...Rb4
- 2.Kxf5#
- 1...Rc4
- 2.Kxf5#
- 1...Rd4
- 2.Kxf5#
- 2.Sxe5#
- 1...Re4
- 2.Kxf5#
- 2.Bxd5#
- 1...Rg4
- 2.Kxf5#
- 2.Kh5#
- 1...Bd1
- 2.Bxd5#
- 1...Bh1
- 2.Kh5#
- 1...Be2
- 2.Bxd5#
- 1...Bg2
- 2.Kh5#
- 1...Be4
- 2.Kh5#
- 1...Bg4
- 2.Bxd5#
- 1...Sg1
- 2.Kxg5#
- 1...Sf2
- 2.Kxg5#
- 1...c4
- 2.Sb4#
- 1...d4
- 2.Sxe5#
- 1...g4
- 2.Kh5#
- 1...Bh5+
- 1.Qa2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 13
- Sets
- Q(a);N_GUARD::S(C),XP(i)
- R(d);::R(E)+K(D),XP(j)
- B(b);::R(E)+K(D)
- B(b);CHECK::R(E)+K(D),XB(b)
- S(c);::R(E)+K(D),XP(k)
- P(g);N_GUARD,S_CUTR(d)::S(C)
- P(h);S_CUTQ(a)::S(C),XP(i)
- P(k);::R(E)+K(D)
- Tries
- Try
- S(C);CHECK
- Vars
- R(d);XS(C)::R(E)+K(D),XP(j)
- Refutation
- P(g);XS(C)
- Try
- Actual
- Q(A);
- Vars
- B(b);CHECK::R(E)+K(D),XB(b)
- Q(a);N_GUARD,XQ(A)::S(C),XP(i)
- P(f);OGATEB::B(B)
- P(i);S_CUTB(b)::B(B),XP(h)
- Q(a);N_GUARD::QAR2(A)
- R(d);::R(E)+K(D),XP(j)
- B(b);N_GUARD::B(B),XP(h)
- B(b);::R(E)+K(D)
- S(c);::R(E)+K(D),XP(k)
- P(g);N_GUARD,S_CUTR(d)::S(C)
- P(h);S_CUTQ(a)::S(C),XP(i)
- P(k);::R(E)+K(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).