MESON Chess Problem Database
Problem Display
PID: 61003 (b6K/r1p3B1/5R2/p5N1/N1pk4/Rq3B2/2rp4/2n3bQ w - - 0 1)
Touw Hian Bwee
1st Prize, Friends of Chess (A), 1971-1972
#2
8 + 11
| 3753 | FIDE Album (1971-1973) | 1978 |
| 6352 | A Collection of Chess Problems by Touw Hian Bwee | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Qxa4
- 2.Rf5#
- 2.Rc6#
- 1...Qb1
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Qb2
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Qd3
- 2.Re6#
- 1...Qe3
- 2.Rf4#
- 2.Rd6#
- 1...Qxf3
- 2.Rf5#
- 2.Rd6#
- 1...Qb4
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Qb5
- 2.Rf4#
- 2.Rd6#
- 1...Qb6
- 2.Rf4#
- 2.Rxb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 1...Qb7
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Qb8+
- 2.Rf8#
- 1...Be3
- 2.Rd6#
- 1...Qa2
- Tries
- 1.Bc6?
- threat
- 2.Rf3#
- 2.Qe4#
- 1...Qh3+
- 2.Rh6#
- 1...Qb8+
- 2.Rf8#
- 1...Kd3
- 2.Qe4#
- 1...Ke3
- 2.Qe4#
- 1...Ke5
- 2.Qe4#
- 2.Qd5#
- 1...Qxa4
- 2.Rf5#
- 2.Qd5#
- 1...c3
- 2.Qe4#
- 1...Qd3
- 2.Rf3#
- 2.Re6#
- 1...Qe3
- 2.Rf4#
- 2.Rd6#
- 2.Qd5#
- 1...Qf3
- 2.Sxf3#
- 2.Rfxf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rd6#
- 1...Qg3
- 2.Rf4#
- 2.Rd6#
- 2.Qe4#
- 2.Qd5#
- 1...Qb5
- 2.Sf3#
- 2.Rf4#
- 2.Rd6#
- 2.Qe4#
- 1...Bh2
- 2.Qe4#
- 1...Be3
- 2.Rd6#
- 2.Qe4#
- 2.Qd5#
- 1...Sd3
- 2.Qe4#
- 1...Bxc6!
- threat
- 1.Bb7?
- threat
- 2.Rf3#
- 2.Qe4#
- 1...Qh3+
- 2.Rh6#
- 1...Kd3
- 2.Qe4#
- 1...Ke3
- 2.Qe4#
- 1...Ke5
- 2.Qe4#
- 2.Qd5#
- 1...Qxa4
- 2.Rf5#
- 2.Rc6#
- 2.Qd5#
- 1...Qxb7
- 2.Rf1#
- 2.Rf2#
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Rxb7
- 2.Qe4#
- 1...c3
- 2.Qe4#
- 1...Qd3
- 2.Rf3#
- 2.Re6#
- 1...Qe3
- 2.Rf4#
- 2.Rd6#
- 2.Qd5#
- 1...Qf3
- 2.Sxf3#
- 2.Rfxf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rd6#
- 1...Qg3
- 2.Rf4#
- 2.Rd6#
- 2.Qe4#
- 2.Qd5#
- 1...Qb5
- 2.Sf3#
- 2.Rf4#
- 2.Rd6#
- 2.Qe4#
- 1...Qb6
- 2.Sf3#
- 2.Rf4#
- 2.Rxb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Qe4#
- 2.Qd5#
- 1...Ra6
- 2.Qe4#
- 1...Bh2
- 2.Qe4#
- 1...Be3
- 2.Rd6#
- 2.Qe4#
- 2.Qd5#
- 1...Sd3
- 2.Qe4#
- 1...c6
- 2.Qe4#
- 1...Bxb7!
- threat
- 1.Bxa8?
- threat
- 2.Rf3#
- 2.Qe4#
- 1...Qh3+
- 2.Rh6#
- 1...Qb8+
- 2.Rf8#
- 1...Kd3
- 2.Qe4#
- 1...Ke3
- 2.Qe4#
- 1...Ke5
- 2.Qe4#
- 2.Qd5#
- 1...Qxa4
- 2.Rf5#
- 2.Rc6#
- 2.Qd5#
- 1...c3
- 2.Qe4#
- 1...Qd3
- 2.Rf3#
- 2.Re6#
- 1...Qe3
- 2.Rf4#
- 2.Rd6#
- 2.Qd5#
- 1...Qf3
- 2.Sxf3#
- 2.Rfxf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rd6#
- 1...Qg3
- 2.Rf4#
- 2.Rd6#
- 2.Qe4#
- 2.Qd5#
- 1...Qb5
- 2.Sf3#
- 2.Rf4#
- 2.Rd6#
- 2.Qe4#
- 1...Qb6
- 2.Sf3#
- 2.Rf4#
- 2.Rxb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Qe4#
- 2.Qd5#
- 1...Qb7
- 2.Rf1#
- 2.Rf2#
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 1...Ra6
- 2.Qe4#
- 1...Rb7
- 2.Qe4#
- 1...Bh2
- 2.Qe4#
- 1...Be3
- 2.Rd6#
- 2.Qe4#
- 2.Qd5#
- 1...Sd3
- 2.Qe4#
- 1...c5
- 2.Qe4#
- 1...c6
- 2.Qe4#
- 1...Rxa8+!
- threat
- 1.Qxg1+?
- 1...Ke5
- 2.Sf7#
- 1...Qe3
- 2.Rf4#
- 2.Rf5#
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rf8#
- 2.Qxe3#
- 1...Kd3!
- 1...Ke5
- 1.Bc6?
- Keys
- 1.Bd5!
- threat
- 2.Qe4#
- 1...Qh3+
- 2.Rh6#
- 1...Qb8+
- 2.Rf8#
- 1...Kd3
- 2.Qe4#
- 1...Ke3
- 2.Qe4#
- 1...Ke5
- 2.Qe4#
- 1...Qxa4
- 2.Rc6#
- 1...Bxd5
- 2.Rf3#
- 1...Qd3
- 2.Re6#
- 1...Qe3
- 2.Rf4#
- 1...Qf3
- 2.Rf5#
- threat
- 1.Bd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 1
- Sets
- Q(e);::B(G)+R(F)
- Q(e);CHECK::B(G)+R(F)
- B(b);SBLOCK::B(G)+R(F),DCHECK
- Tries
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK::B(G)+R(F)
- K(g);P-FLIGHT,P_SPINQ(e)::QAB1(A)
- K(g);P_SPINQ(e),S_FLIGHT::QAR1(A)
- P(f);::QAR1(A)
- B(b);::QAR1(A)
- S(a);::QAR1(A)
- Refutation
- B(k);XB(C)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK::B(G)+R(F)
- K(g);P-FLIGHT,P_SPINQ(e)::QAB1(A)
- K(g);P_SPINQ(e),S_FLIGHT::QAR1(A)
- R(i);XB(C)::QAR1(A)
- P(f);::QAR1(A)
- R(i);::QAR1(A)
- B(b);::QAR1(A)
- S(a);::QAR1(A)
- P(j);::QAR1(A)
- Refutation
- B(k);XB(C)
- Try
- B(C);XB(k)
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK::B(G)+R(F)
- K(g);P-FLIGHT,P_SPINQ(e)::QAB1(A)
- K(g);P_SPINQ(e),S_FLIGHT::QAR1(A)
- P(f);::QAR1(A)
- R(i);::QAR1(A)
- B(b);::QAR1(A)
- S(a);::QAR1(A)
- P(j);::QAR1(A)
- Refutation
- R(i);CHECK,XB(C)
- Try
- Q(A);CHECK,XB(b)
- Vars
- K(g);S_FLIGHT::S(E)
- Refutation
- K(g);P-FLIGHT,P_SPINQ(e)
- Try
- Actual
- B(C);
- Threat
- QAR1(A)
- Vars
- Q(e);CHECK::B(G)+R(F)
- K(g);P-FLIGHT,P_SPINQ(e)::QAB1(A)
- K(g);P_SPINQ(e),S_FLIGHT::QAR1(A)
- K(g);S_FLIGHT::QAR1(A)
- Q(e);XS(D)::B(G)+R(F)
- B(k);SBLOCK,XB(C)::B(G)+R(F)
- Q(e);::B(G)+R(F)
- Q(e);::B(G)+R(F),DCHECK
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).