MESON Chess Problem Database
Problem Display
PID: 80372 (n1B1r3/3Qp2q/2pN1NR1/K3k3/1p5r/5pPb/3R1B2/8 w - - 0 1)
Touw Hian Bwee
1st HM.=, Schach-Echo, 1971
#2
9 + 10
| 6352 | A Collection of Chess Problems by Touw Hian Bwee | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Qh5
- 2.Sf7#
- 1...Qh6
- 2.Sf7#
- 1...Qf7
- 2.Sxf7#
- 1...Qh8
- 2.Sf7#
- 1...Rc4
- 2.Sxc4#
- 1...Rd4
- 2.Bxd4#
- 1...Rg4
- 2.Qf5#
- 2.Qe6#
- 1...Rh5
- 2.Sc4#
- 2.Bd4#
- 1...Rh6
- 2.Sc4#
- 2.Bd4#
- 1...Bf1
- 2.Qf5#
- 2.Qe6#
- 1...Bg2
- 2.Qf5#
- 2.Qe6#
- 1...Bg4
- 2.Sc4#
- 2.Bd4#
- 1...Bf5
- 2.Qxf5#
- 1...Be6
- 2.Qxe6#
- 1...Bxd7
- 2.Sxd7#
- 1...c5
- 2.Rd5#
- 1...exd6
- 2.Qxd6#
- 1...Qh5
- Tries
- 1.Sg4+?
- 1...Rxg4
- 2.Re6#
- 2.Qf5#
- 2.Qe6#
- 1...Bxg4!
- 1...Rxg4
- 1.Re2+?
- 1...Re4
- 2.Sc4#
- 2.Rxe4#
- 1...fxe2!
- 1...Re4
- 1.Rg5+?
- 1...Qf5
- 2.Qe6#
- 1...Bf5
- 2.Qe6#
- 1...Kxf6!
- 1...Qf5
- 1.Qxh3?
- threat
- 2.Sd7#
- 2.Qf5#
- 2.Qe6#
- 1...Qxg6
- 2.Sd7#
- 2.Qe6#
- 1...Rxh3
- 2.Sc4#
- 2.Sg4#
- 2.Sd7#
- 1...Rxc8
- 2.Sd7#
- 2.Qf5#
- 1...exd6
- 2.Qf5#
- 1...exf6
- 2.Qf5#
- 1...Rd4
- 2.Qe6#
- 1...Qg8
- 2.Sd7#
- 2.Qf5#
- 1...Qh5
- 2.Sf7#
- 2.Sd7#
- 2.Qe6#
- 1...Qf7
- 2.Sxf7#
- 2.Sd7#
- 2.Qf5#
- 1...Rf4
- 2.Sd7#
- 2.Qe6#
- 1...Rg4
- 2.Sxg4#
- 2.Sd7#
- 1...Rh5
- 2.Sc4#
- 2.Sg4#
- 2.Sd7#
- 2.Qe6#
- 1...Rd8
- 2.Qf5#
- 2.Qe6#
- 1...Sb6
- 2.Qf5#
- 2.Qe6#
- 1...Sc7
- 2.Sd7#
- 2.Qf5#
- 1...e6!
- threat
- 1.Qg4?
- threat
- 2.Sc4#
- 2.Sd7#
- 1...Qxg6
- 2.Sd7#
- 1...Rxg4
- 2.Sd7#
- 1...Bxg4
- 2.Sc4#
- 1...exd6
- 2.Bd4#
- 1...exf6
- 2.Sc4#
- 1...Qg8
- 2.Sd7#
- 1...Qf7
- 2.Sxf7#
- 2.Sd7#
- 1...Rd8
- 2.Sc4#
- 1...Bf1
- 2.Sd7#
- 2.Qf5#
- 2.Qe6#
- 2.Qg5#
- 1...e6
- 2.Sc4#
- 1...Sb6!
- threat
- 1.g4?
- threat
- 2.Bg3#
- 2.Qf5#
- 1...Kf4
- 2.Qf5#
- 1...Rxg4
- 2.Qf5#
- 1...Bxg4
- 2.Bg3#
- 1...Qh5
- 2.Bg3#
- 1...Qh6
- 2.Qf5#
- 1...Rh5
- 2.Bg3#
- 1...e6
- 2.Bg3#
- 1...Qxg6!
- threat
- 1.Sg4+?
- Keys
- 1.Rg4!
- threat
- 2.Bd4#
- 2.Qe6#
- 1...Kxf6
- 2.Qe6#
- 1...Rxg4
- 2.Qe6#
- 1...Rxc8
- 2.Bd4#
- 1...Bxg4
- 2.Bd4#
- 1...exd6
- 2.Bd4#
- 2.Qxd6#
- 1...exf6
- 2.Sc4#
- 1...Qd3
- 2.Qe6#
- 1...Qe4
- 2.Qe6#
- 1...Qf5
- 2.Bd4#
- 2.Qxf5#
- 1...Qg8
- 2.Bd4#
- 2.Qf5#
- 1...Qf7
- 2.Bd4#
- 2.Qf5#
- 1...Sc7
- 2.Bd4#
- 1...c5
- 2.Qe6#
- 1...e6
- 2.Bd4#
- threat
- 1.Rg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 10
- Sets
- Q(h);N_GUARD::S(E)
- Q(h);N_GUARD::S(E),XQ(h)
- R(d);N_GUARD::S(E),XR(d)
- R(d);N_GUARD::B(B),XR(d)
- B(b);N_GUARD::QAR1(H),XB(b)
- B(b);XQ(H)::S(F),XB(b)
- P(f);N_GUARD::R1(A)
- P(g);OGATE,XS(E)::QAB1(H),XP(g)
- Tries
- Try
- S(F);CHECK
- Refutation
- B(b);XS(F)
- Try
- R(A);CHECK
- Refutation
- P(a);XR(A)
- Try
- R(G);CHECK
- Vars
- Q(h);P_SPINQ(h)::QAR1(H)
- B(b);P_SPINB(b)::QAR1(H)
- Refutation
- K(e);S_FLIGHT,XS(F)
- Try
- Q(H);XB(b)
- Threat
- DUALS(3)
- Vars
- P(g);XS(E)::QAR1(H)
- P(g);XS(F)::QAR1(H)
- R(d);::QAR1(H)
- Refutation
- P(g);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(h);XR(G)::S(F)
- R(d);XQ(H)::S(F)
- B(b);XQ(H)::S(E)
- P(g);SBLOCK,XS(E)::B(B)
- P(g);XS(F)::S(E)
- Q(h);::S(F)
- R(j);::S(E)
- P(g);::S(E)
- Refutation
- S(i);
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- K(e);S_FLIGHT::QAR1(H)
- R(d);XP(C)::QAR1(H)
- B(b);XP(C)::B(B)
- Q(h);::B(B)
- Q(h);::QAR1(H)
- R(d);::B(B)
- P(g);::B(B)
- Refutation
- Q(h);XR(G)
- Try
- Actual
- R(G);
- Threat
- DUALS(2)
- Vars
- K(e);S_FLIGHT,XS(F)::QAR1(H)
- R(d);XR(G)::QAR1(H)
- R(j);XB(I)::B(B)
- B(b);XR(G)::B(B)
- P(g);SBLOCK,XS(F)::S(E)
- Q(h);::QAR1(H)
- S(i);::B(B)
- P(f);::QAR1(H)
- P(g);::B(B)
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).