MESON Chess Problem Database
Problem Display
PID: 11943 (7n/2pp2r1/2N2B1R/b1QBpk2/2b4R/r5p1/6P1/1qnN3K w - - 0 1)
Touw Hian Bwee
1st Prize, Schach-Echo, 1973/I
#2
9 + 12
| 3753 | FIDE Album (1971-1973) | 1978 |
| 273 | Mat Plus | 1994 |
| 6352 | A Collection of Chess Problems by Touw Hian Bwee | 2008 |
| 56 | The Problemist | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Se3#
- 1...Ra2
- 2.Se3#
- 1...Re3
- 2.Sxe3#
- 1...Ra4
- 2.Se3#
- 1...Rg5
- 2.Se7#
- 1...Re7
- 2.Sxe7#
- 1...Rg8
- 2.Se7#
- 1...Bb3
- 2.Se3#
- 1...Bd3
- 2.Se3#
- 1...Bc3
- 2.Se3#
- 1...Sf7
- 2.Se7#
- 1...e4
- 2.Sd4#
- 1...Ra1
- Tries
- 1.Be4+?
- 1...Ke6
- 2.Sd8#
- 1...Qxe4!
- 1...Ke6
- 1.Be6+?
- 1...Bxe6
- 2.Sd4#
- 2.Qxe5#
- 1...dxe6
- 2.Sd4#
- 2.Qxe5#
- 1...Kxe6!
- 1...Bxe6
- 1.Bf7?
- threat
- 2.Sd4#
- 2.Se7#
- 2.Qxe5#
- 1...Rxf7
- 2.Sd4#
- 2.Qxe5#
- 1...Bxf7
- 2.Sd4#
- 2.Qxe5#
- 1...Sxf7
- 2.Sd4#
- 1...dxc6
- 2.Qxe5#
- 1...Rg4
- 2.Qxe5#
- 1...Rg6
- 2.Qxe5#
- 1...Qd3
- 2.Se7#
- 2.Qxe5#
- 1...Qe4
- 2.Se7#
- 1...Qa1
- 2.Se7#
- 1...Qb2
- 2.Se7#
- 1...Qb5
- 2.Sd4#
- 2.Se7#
- 1...Rd3
- 2.Se7#
- 2.Qxe5#
- 1...Re3
- 2.Sxe3#
- 2.Sd4#
- 2.Se7#
- 1...Bd5
- 2.Se7#
- 1...Bc3
- 2.Se3#
- 2.Se7#
- 1...Se2
- 2.Se7#
- 2.Qxe5#
- 1...Sb3
- 2.Se7#
- 2.Qxe5#
- 1...Sd3
- 2.Sd4#
- 2.Se7#
- 1...d5
- 2.Se7#
- 1...d6
- 2.Sd4#
- 2.Se7#
- 1...Sg6!
- threat
- 1.Qf2+?
- 1...Rf3
- 2.Se3#
- 2.Qxf3#
- 1...gxf2!
- 1...Rf3
- 1.Qe3?
- threat
- 2.Qxe5#
- 1...Rxe3
- 2.Sxe3#
- 1...Sg6
- 2.Qg5#
- 1...Qe4
- 2.Qxe4#
- 1...Qa1
- 2.Qe4#
- 1...Qb2
- 2.Qe4#
- 1...Re7
- 2.Sxe7#
- 2.Qg5#
- 1...Bc3
- 2.Qf3#
- 1...Sd3
- 2.Qe4#
- 1...Sf7
- 2.Se7#
- 1...e4
- 2.Sd4#
- 2.Rf4#
- 2.Qf4#
- 1...d6!
- threat
- 1.Qd6?
- threat
- 2.Qxe5#
- 1...Qe4
- 2.Bxe4#
- 1...Qa1
- 2.Be4#
- 1...Qb2
- 2.Be4#
- 1...Re3
- 2.Sxe3#
- 1...Re7
- 2.Sxe7#
- 1...Bc3
- 2.Se3#
- 1...Sd3
- 2.Be4#
- 1...Sg6
- 2.R6h5#
- 1...Sf7
- 2.Se7#
- 2.Qxd7#
- 1...e4
- 2.Sd4#
- 2.Rf4#
- 2.Qf4#
- 2.Qe5#
- 1...cxd6!
- threat
- 1.Be4+?
- Keys
- 1.Qe7!
- threat
- 2.Qxe5#
- 1...Rxe7
- 2.Sxe7#
- 1...d6
- 2.Qe6#
- 1...Qe4
- 2.Bxe4#
- 1...Qa1
- 2.Be4#
- 1...Qb2
- 2.Be4#
- 1...Re3
- 2.Sxe3#
- 1...Bc3
- 2.Se3#
- 1...Sd3
- 2.Be4#
- 1...Sg6
- 2.R6h5#
- 1...Sf7
- 2.Qxd7#
- 1...e4
- 2.Sd4#
- 2.Qe5#
- threat
- 1.Qe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 8
- Sets
- R(c);N_GUARD::S(A)
- R(c);N_GUARD::S(A),XR(c)
- R(k);N_GUARD::S(G)
- R(k);N_GUARD::S(G),XR(k)
- B(e);S_CUTR(c)::S(A)
- B(f);S_CUTR(c)::S(A)
- S(l);S_CUTR(k)::S(G)
- P(g);N_GUARD::S(G)
- Tries
- Try
- B(F);CHECK,P_PINP(g)
- Vars
- K(h);N_SPINP(g),S_FLIGHT::S(G)
- Refutation
- Q(a);P_PINP(C),XB(F)
- Try
- B(F);CHECK,P_PINP(g)
- Refutation
- K(h);N_SPINP(g),S_FLIGHT,XB(F)
- Try
- B(F);P_PINP(g)
- Threat
- DUALS(3)
- Vars
- S(l);XB(F)::S(G)
- P(j);XS(G)::QAR1(E),XP(g)
- R(k);::QAR1(E),XP(g)
- Q(a);P_PINP(C)::S(G)
- Q(a);::S(G)
- B(e);N_SPINP(g),P_PINP(C)::S(G)
- P(j);N_SPINP(g)::S(G)
- Refutation
- S(l);
- Try
- Q(E);CHECK
- Refutation
- P(d);XQ(E)
- Try
- Q(E);
- Threat
- QAR1(E),XP(g)
- Vars
- R(c);XQ(E)::S(A),XR(c)
- S(l);S_CUTR(k)::QAR1(E)
- Q(a);N_GUARD,P_PINP(C)::QAB1(E),XQ(a)
- Q(a);N_GUARD::QAB1(E)
- B(f);S_CUTR(c)::QAR2(E)
- S(b);P_PINS(A),S_CUTQ(a)::QAB1(E)
- S(l);S_CUTR(k)::S(G)
- Refutation
- P(j);
- Try
- Q(E);
- Threat
- QAR1(E),XP(g)
- Vars
- Q(a);N_GUARD,P_PINP(C)::B(F),XQ(a)
- Q(a);N_GUARD::B(F)
- R(c);N_GUARD::S(A),XR(c)
- R(k);N_GUARD::S(G),XR(k)
- B(f);S_CUTR(c)::S(A)
- S(b);P_PINS(A),S_CUTQ(a)::B(F)
- S(l);SBLOCK,S_CUTR(k)::R(I)
- Refutation
- P(i);XQ(E)
- Try
- Actual
- Q(E);
- Threat
- QAR1(E),XP(g)
- Vars
- R(k);XQ(E)::S(G),XR(k)
- P(j);N_GUARD::QAB1(E)
- Q(a);N_GUARD,P_PINP(C)::B(F),XQ(a)
- Q(a);N_GUARD::B(F)
- R(c);N_GUARD::S(A),XR(c)
- B(f);S_CUTR(c)::S(A)
- S(b);P_PINS(A),S_CUTQ(a)::B(F)
- S(l);SBLOCK,S_CUTR(k)::R(I)
- S(l);S_CUTR(k)::QAB(E),XP(j)
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).