MESON Chess Problem Database
Problem Display
PID: 15271 (3b4/K4bP1/Np6/1p3Qn1/1rkB4/1p6/PP1R4/5q1r w - - 0 1)
Touw Hian Bwee
12th Place, 02. WCCT, 1980-1983
#2
8 + 10
| 6352 | A Collection of Chess Problems by Touw Hian Bwee | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Sf3
- 2.Qxf7#
- 1...Sf3
- Tries
- 1.Bg1?
- threat
- 2.Rd4#
- 2.Qxf1#
- 1...Qxg1
- 2.Qd3#
- 1...Qxf5
- 2.Rd4#
- 1...bxa2
- 2.Qc2#
- 1...Qe2
- 2.Rd4#
- 1...Qg2
- 2.Rd4#
- 2.Qd3#
- 1...Qd3
- 2.Qxd3#
- 1...Qh3
- 2.Rd4#
- 1...Qa1
- 2.Rd4#
- 2.Qd3#
- 1...Qb1
- 2.Rd4#
- 1...Qc1
- 2.Rd4#
- 2.Qd3#
- 1...Qd1
- 2.Qd3#
- 1...Qe1
- 2.Rd4#
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf3
- 2.Rd4#
- 1...Qf4
- 2.Qd3#
- 1...Rh2
- 2.Rd4#
- 1...Rh3
- 2.Rd4#
- 1...Rh4
- 2.Qxf1#
- 1...Bh5
- 2.Rd4#
- 2.Qd5#
- 1...Bg6
- 2.Rd4#
- 2.Qd5#
- 1...Bf6
- 2.Qc8#
- 2.Qxf1#
- 1...Sf3
- 2.Qxf7#
- 1...Se6
- 2.Qxf1#
- 2.Qd5#
- 1...Rxg1!
- threat
- 1.Bf2?
- threat
- 2.Rd4#
- 1...Qxf2
- 2.Qd3#
- 1...bxa2
- 2.Qc2#
- 1...Qd3
- 2.Qxd3#
- 1...Qd1
- 2.Qd3#
- 1...Bf6
- 2.Qc8#
- 1...Sf3
- 2.Qxf7#
- 1...Se6
- 2.Qd5#
- 1...Rh4!
- threat
- 1.Bc3?
- threat
- 2.Rd4#
- 1...Qd3
- 2.Qxd3#
- 1...Qd1
- 2.Qd3#
- 1...Qg1
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...Rh4
- 2.Qxf1#
- 1...Bf6
- 2.Qc8#
- 1...Sf3
- 2.Qxf7#
- 1...Se6
- 2.Qd5#
- 1...bxa2!
- threat
- 1.Bc5?
- threat
- 2.Rd4#
- 1...bxa2
- 2.Qc2#
- 1...bxc5
- 2.Qxc5#
- 1...Qd3
- 2.Qxd3#
- 1...Qd1
- 2.Qd3#
- 1...Qg1
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...Rh4
- 2.Qxf1#
- 1...Sf3
- 2.Qxf7#
- 1...Se6
- 2.Qd5#
- 1...Bf6!
- threat
- 1.Be5?
- threat
- 2.Rd4#
- 1...bxa2
- 2.Qc2#
- 1...Qd3
- 2.Qxd3#
- 1...Qd1
- 2.Qd3#
- 1...Qg1
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...Rh4
- 2.Qxf1#
- 1...Sf3
- 2.Qxf7#
- 1...Se6!
- threat
- 1.Bxb6?
- threat
- 2.Rd4#
- 2.Qc5#
- 1...Qxf5
- 2.Rd4#
- 1...bxa2
- 2.Qc2#
- 1...Qd3
- 2.Qxd3#
- 2.Qc5#
- 1...Qd1
- 2.Qd3#
- 2.Qc5#
- 1...Qg1
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 2.Qc5#
- 1...Rh4
- 2.Qxf1#
- 2.Qc5#
- 1...Bd5
- 2.Rd4#
- 2.Qxd5#
- 1...Bf6
- 2.Qc8#
- 2.Qc5#
- 1...Be7
- 2.Rd4#
- 1...Sf3
- 2.Qc5#
- 2.Qxf7#
- 1...Se4
- 2.Rd4#
- 2.Qxe4#
- 1...Se6
- 2.Qd5#
- 1...Bxb6+!
- threat
- 1.Bf6?
- threat
- 2.Rd4#
- 1...Bxf6
- 2.Qc8#
- 1...bxa2
- 2.Qc2#
- 1...Qd3
- 2.Qxd3#
- 1...Qd1
- 2.Qd3#
- 1...Qg1
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...Rh4
- 2.Qxf1#
- 1...Se6
- 2.Qd5#
- 1...Sf3!
- threat
- 1.Bg1?
- Keys
- 1.Be3!
- threat
- 2.Rd4#
- 1...bxa2
- 2.Qc2#
- 1...Qd3
- 2.Qxd3#
- 1...Qd1
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...Rh4
- 2.Qxf1#
- 1...Bf6
- 2.Qc8#
- 1...Sf3
- 2.Qxf7#
- 1...Se6
- 2.Qd5#
- threat
- 1.Be3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- S(g);N_GUARD,S_CUTQ(a)::QAB(E),XB(i)
- Tries
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XB(D)::QAB1(E)
- Q(a);XQ(E)::R1(C)
- P(c);N_GUARD,XP(A)::QAR2(E)
- Q(a);::R1(C)
- Q(a);N_GUARD::QAB1(E),XQ(a)
- Q(a);N_GUARD::QAB1(E)
- R(b);::R1(C)
- R(b);::QAB(E),XQ(a)
- S(g);N_GUARD,S_CUTQ(a)::QAB(E),XB(i)
- Refutation
- R(b);XB(D)
- Try
- B(D);
- Threat
- R1(C)
- Vars
- Q(a);N_GUARD,XB(D)::QAB1(E)
- P(c);N_GUARD,XP(A)::QAR2(E)
- Q(a);N_GUARD::QAB1(E),XQ(a)
- Q(a);N_GUARD::QAB1(E)
- B(j);N_GUARD::QAR(E)
- S(g);N_GUARD::QAB(E),XB(i)
- S(g);S_CUTB(i)::QAB1(E)
- Refutation
- R(b);
- Try
- B(D);
- Threat
- R1(C)
- Vars
- Q(a);N_GUARD::QAB1(E),XQ(a)
- Q(a);N_GUARD::QAB1(E)
- R(b);N_GUARD::QAB(E),XQ(a)
- B(j);N_GUARD::QAR(E)
- S(g);N_GUARD,S_CUTQ(a)::QAB(E),XB(i)
- S(g);S_CUTB(i)::QAB1(E)
- Refutation
- P(c);XP(A)
- Try
- B(D);
- Threat
- R1(C)
- Vars
- P(c);N_GUARD,XP(A)::QAR2(E)
- P(h);OGATE,XB(D)::QAR1(E),XP(h)
- Q(a);N_GUARD::QAB1(E),XQ(a)
- Q(a);N_GUARD::QAB1(E)
- R(b);N_GUARD::QAB(E),XQ(a)
- S(g);N_GUARD,S_CUTQ(a)::QAB(E),XB(i)
- S(g);S_CUTB(i)::QAB1(E)
- Refutation
- B(j);
- Try
- B(D);
- Threat
- R1(C)
- Vars
- P(c);N_GUARD,XP(A)::QAR2(E)
- Q(a);N_GUARD::QAB1(E),XQ(a)
- Q(a);N_GUARD::QAB1(E)
- R(b);N_GUARD::QAB(E),XQ(a)
- S(g);N_GUARD,S_CUTQ(a)::QAB(E),XB(i)
- Refutation
- S(g);
- Try
- B(D);XP(h)
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(E)::R1(C)
- P(c);N_GUARD,XP(A)::QAR2(E)
- Q(a);N_GUARD,P_PINB(D)::QAB1(E)
- B(j);::R1(C)
- S(g);S_CUTB(i)::QAB1(E)
- Refutation
- B(j);CHECK,XB(D)
- Try
- B(D);
- Threat
- R1(C)
- Vars
- B(j);N_GUARD,XB(D)::QAR(E)
- P(c);N_GUARD,XP(A)::QAR2(E)
- Q(a);N_GUARD::QAB1(E),XQ(a)
- Q(a);N_GUARD::QAB1(E)
- R(b);N_GUARD::QAB(E),XQ(a)
- S(g);S_CUTB(i)::QAB1(E)
- Refutation
- S(g);
- Try
- Actual
- B(D);
- Threat
- R1(C)
- Vars
- P(c);N_GUARD,XP(A)::QAR2(E)
- Q(a);N_GUARD::QAB1(E),XQ(a)
- Q(a);N_GUARD::QAB1(E)
- R(b);N_GUARD::QAB(E),XQ(a)
- B(j);N_GUARD::QAR(E)
- S(g);N_GUARD,S_CUTQ(a)::QAB(E),XB(i)
- S(g);S_CUTB(i)::QAB1(E)
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).