MESON Chess Problem Database
Problem Display
PID: 51797 (3nB3/2p1Rp2/7P/1r1pNkBK/qR3p1p/1n4p1/5bQ1/7r w - - 0 1)
Touw Hian Bwee
2nd Prize, Pedagogusok Lapja, 1973
#2
8 + 13
| 3753 | FIDE Album (1971-1973) | 1978 |
| 145 | StrateGems | 2004 |
| 6352 | A Collection of Chess Problems by Touw Hian Bwee | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Rxf4#
- 1...Qa2
- 2.Rxf4#
- 1...Qa3
- 2.Rxf4#
- 1...Qa5
- 2.Rxf4#
- 1...Qa6
- 2.Rxf4#
- 1...Qa7
- 2.Rxf4#
- 1...Qa8
- 2.Rxf4#
- 1...Ra1
- 2.Qh3#
- 1...Rb1
- 2.Qh3#
- 1...Rc1
- 2.Qh3#
- 1...Rd1
- 2.Qh3#
- 1...Re1
- 2.Qh3#
- 1...Rf1
- 2.Qh3#
- 1...Rg1
- 2.Qh3#
- 1...Rh3
- 2.Qxh3#
- 1...Be1
- 2.Qc2#
- 1...Bg1
- 2.Qc2#
- 1...Be3
- 2.Qc2#
- 1...Bd4
- 2.Qc2#
- 1...Bc5
- 2.Qc2#
- 1...Bb6
- 2.Qc2#
- 1...Ba7
- 2.Qc2#
- 1...Sc6
- 2.Bd7#
- 1...Sb7
- 2.Bd7#
- 1...f3
- 2.Qxf3#
- 1...f6
- 2.Bg6#
- 1...Qa1
- Tries
- 1.Sd3?
- threat
- 2.Re5#
- 1...Qa1
- 2.Rxf4#
- 1...Re1
- 2.Qh3#
- 1...Sc6
- 2.Bd7#
- 1...Se6
- 2.Rxf7#
- 1...d4
- 2.Qe4#
- 1...f6
- 2.Bg6#
- 1...Bd4!
- threat
- 1.Sf3?
- threat
- 2.Re5#
- 1...Qa1
- 2.Rxf4#
- 1...Re1
- 2.Sxh4#
- 2.Qh3#
- 1...Bd4
- 2.Qc2#
- 1...Sc6
- 2.Bd7#
- 1...Se6
- 2.Rxf7#
- 1...f6
- 2.Bg6#
- 1...d4!
- threat
- 1.Sc4?
- threat
- 2.Re5#
- 1...dxc4
- 2.Qe4#
- 1...Re1
- 2.Qh3#
- 1...Bd4
- 2.Qc2#
- 1...Sc6
- 2.Bd7#
- 1...Se6
- 2.Rxf7#
- 1...d4
- 2.Qe4#
- 1...f6
- 2.Bg6#
- 1...Qa1!
- threat
- 1.Sg4?
- threat
- 2.Re5#
- 1...Qa1
- 2.Rxf4#
- 1...Bd4
- 2.Qc2#
- 1...Sc6
- 2.Bd7#
- 1...Se6
- 2.Rxf7#
- 1...d4
- 2.Qe4#
- 1...f6
- 2.Bg6#
- 1...Re1!
- threat
- 1.Sg6?
- threat
- 2.Re5#
- 1...fxg6+
- 2.Bxg6#
- 1...Qa1
- 2.Rxf4#
- 1...Re1
- 2.Sxh4#
- 2.Qh3#
- 1...Bd4
- 2.Qc2#
- 1...Sc6
- 2.Bd7#
- 1...Se6
- 2.Rxf7#
- 1...d4
- 2.Qe4#
- 1...f6!
- threat
- 1.Sd7?
- threat
- 2.Re5#
- 1...Qa1
- 2.Rxf4#
- 1...Re1
- 2.Qh3#
- 1...Bd4
- 2.Qc2#
- 1...Se6
- 2.Rxf7#
- 1...d4
- 2.Qe4#
- 1...f6
- 2.Bg6#
- 1...Sc6!
- threat
- 1.Sxf7?
- threat
- 2.Re5#
- 1...Sxf7
- 2.Bd7#
- 1...Qa1
- 2.Rxf4#
- 1...Re1
- 2.Qh3#
- 1...Bd4
- 2.Qc2#
- 1...Sc6
- 2.Bd7#
- 1...d4
- 2.Qe4#
- 1...Se6!
- threat
- 1.Sd3?
- Keys
- 1.Sc6!
- threat
- 2.Re5#
- 1...Sxc6
- 2.Bd7#
- 1...Qa1
- 2.Rxf4#
- 1...Re1
- 2.Qh3#
- 1...Bd4
- 2.Qc2#
- 1...Se6
- 2.Rxf7#
- 1...d4
- 2.Qe4#
- 1...f6
- 2.Bg6#
- threat
- 1.Sc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 21
- Sets
- Q(e);N_GUARD::R1(B),XP(f)
- R(a);N_GUARD::QAB(A)
- R(a);N_GUARD::QAB(A),XR(a)
- B(b);OGATE::QAB(A)
- S(m);N_GUARD::B(H)
- P(f);OGATEB::QAR2(A),XP(f)
- P(l);OGATE::B(H)
- Tries
- Try
- S(C);
- Threat
- R1(G)
- Vars
- Q(e);N_GUARD::R1(B),XP(f)
- R(a);N_GUARD::QAB(A)
- S(m);N_GUARD::B(H)
- S(m);N_GUARD,SBLOCK::R(G),XP(l)
- P(i);N_GUARD::QAB1(A)
- P(l);OGATE::B(H)
- Refutation
- B(b);
- Try
- S(C);
- Threat
- R1(G)
- Vars
- Q(e);N_GUARD::R1(B),XP(f)
- B(b);OGATE::QAB(A)
- S(m);N_GUARD::B(H)
- S(m);N_GUARD,SBLOCK::R(G),XP(l)
- P(l);OGATE::B(H)
- Refutation
- P(i);
- Try
- S(C);
- Threat
- R1(G)
- Vars
- P(i);N_GUARD,XS(C)::QAB1(A)
- R(a);N_GUARD::QAB(A)
- B(b);OGATE::QAB(A)
- S(m);N_GUARD::B(H)
- S(m);N_GUARD,SBLOCK::R(G),XP(l)
- P(i);N_GUARD::QAB1(A)
- P(l);OGATE::B(H)
- Refutation
- Q(e);
- Try
- S(C);
- Threat
- R1(G)
- Vars
- Q(e);N_GUARD::R1(B),XP(f)
- B(b);OGATE::QAB(A)
- S(m);N_GUARD::B(H)
- S(m);N_GUARD,SBLOCK::R(G),XP(l)
- P(i);N_GUARD::QAB1(A)
- P(l);OGATE::B(H)
- Refutation
- R(a);
- Try
- S(C);
- Threat
- R1(G)
- Vars
- P(l);CHECK,OGATE,XS(C)::B(H),XP(l)
- Q(e);N_GUARD::R1(B),XP(f)
- B(b);OGATE::QAB(A)
- S(m);N_GUARD::B(H)
- S(m);N_GUARD,SBLOCK::R(G),XP(l)
- P(i);N_GUARD::QAB1(A)
- Refutation
- P(l);
- Try
- S(C);
- Threat
- R1(G)
- Vars
- Q(e);N_GUARD::R1(B),XP(f)
- R(a);N_GUARD::QAB(A)
- B(b);OGATE::QAB(A)
- S(m);N_GUARD,SBLOCK::R(G),XP(l)
- P(i);N_GUARD::QAB1(A)
- P(l);OGATE::B(H)
- Refutation
- S(m);
- Try
- S(C);XP(l)
- Threat
- R1(G)
- Vars
- S(m);N_GUARD,XS(C)::B(H)
- Q(e);N_GUARD::R1(B),XP(f)
- R(a);N_GUARD::QAB(A)
- B(b);OGATE::QAB(A)
- S(m);N_GUARD::B(H)
- P(i);N_GUARD::QAB1(A)
- Refutation
- S(m);
- Try
- Actual
- S(C);
- Threat
- R1(G)
- Vars
- S(m);N_GUARD,XS(C)::B(H)
- Q(e);N_GUARD::R1(B),XP(f)
- R(a);N_GUARD::QAB(A)
- B(b);OGATE::QAB(A)
- S(m);N_GUARD,SBLOCK::R(G),XP(l)
- P(i);N_GUARD::QAB1(A)
- P(l);OGATE::B(H)
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).