MESON Chess Problem Database
Problem Display
PID: 176234 (2br1b2/Kn2p3/pBp5/4p3/4k3/rR2N1PB/7q/3QN1n1 w - - 0 1)
Touw Hian Bwee
2nd HM., Schach-Echo, 1972
#2
8 + 12
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rd3
- 2.Qxd3#
- 1...Rd7
- 2.Bf5#
- 2.Qg4#
- 1...Re8
- 2.Rb4#
- 2.Qd3#
- 1...Bg4
- 2.Qxg4#
- 1...Bf5
- 2.Bxf5#
- 1...Bd7
- 2.Rb4#
- 2.Qd3#
- 1...Sf3
- 2.Qxf3#
- 1...Sxh3
- 2.Qf3#
- 1...Sd6
- 2.Qd3#
- 1...e6
- 2.Qg4#
- 1...Rd3
- Tries
- 1.Bg2+?
- 1...Sf3
- 2.Bxf3#
- 2.Qxf3#
- 1...Qxg2!
- 1...Sf3
- 1.Bd7?
- threat
- 2.Rb4#
- 2.Qg4#
- 2.Qd3#
- 1...Qxg3
- 2.Rb4#
- 1...Rxb3
- 2.Qg4#
- 1...Rxd7
- 2.Qg4#
- 1...Bxd7
- 2.Rb4#
- 2.Qd3#
- 1...Qa2
- 2.Qg4#
- 2.Qd3#
- 1...Qb2
- 2.Qg4#
- 2.Qd3#
- 1...Qc2
- 2.Qxc2#
- 2.Qg4#
- 1...Qd2
- 2.Qg4#
- 1...Qf2
- 2.Rb4#
- 2.Qd3#
- 1...Qh3
- 2.Rb4#
- 2.Qc2#
- 2.Qb1#
- 2.Qd3#
- 1...Qh4
- 2.Rb4#
- 2.Qc2#
- 2.Qb1#
- 2.Qd3#
- 1...Qh5
- 2.Rb4#
- 2.Qc2#
- 2.Qb1#
- 2.Qd3#
- 1...Qh6
- 2.Rb4#
- 2.Qc2#
- 2.Qb1#
- 2.Qd3#
- 1...Ra4
- 2.Qg4#
- 2.Qd3#
- 1...Bh6
- 2.Rb4#
- 2.Qd3#
- 1...Se2
- 2.Qc2#
- 2.Qb1#
- 2.Qd3#
- 1...Sf3
- 2.Qxf3#
- 2.Qd3#
- 1...Sh3
- 2.Rb4#
- 2.Qf3#
- 2.Qd3#
- 1...Sa5
- 2.Qg4#
- 2.Qd3#
- 1...Sc5
- 2.Qg4#
- 1...Sd6
- 2.Bxc6#
- 2.Qg4#
- 2.Qd3#
- 1...a5
- 2.Qg4#
- 2.Qd3#
- 1...c5
- 2.Qg4#
- 2.Qd3#
- 2.Qd5#
- 1...e6
- 2.Qg4#
- 2.Qd3#
- 1...Qe2!
- threat
- 1.Qc2+?
- 1...Rd3
- 2.Rb4#
- 2.Qxd3#
- 1...Qxc2!
- 1...Rd3
- 1.Qb1+?
- 1...Rd3
- 2.Rb4#
- 2.Qxd3#
- 1...Qc2!
- 1...Rd3
- 1.Bg2+?
- Keys
- 1.Qd7!
- threat
- 2.Bf5#
- 2.Rb4#
- 1...Qxg3
- 2.Rb4#
- 1...Qxh3
- 2.Rb4#
- 1...Rxb3
- 2.Bf5#
- 1...Rxd7
- 2.Bf5#
- 1...Bxd7
- 2.Rb4#
- 1...Sxh3
- 2.Rb4#
- 1...Qa2
- 2.Bf5#
- 1...Qb2
- 2.Bf5#
- 1...Qc2
- 2.Bf5#
- 1...Qd2
- 2.Bf5#
- 1...Qe2
- 2.Bf5#
- 1...Qf2
- 2.Rb4#
- 1...Ra4
- 2.Bf5#
- 1...Se2
- 2.Bf5#
- 1...Sf3
- 2.Bf5#
- 1...Sa5
- 2.Bf5#
- 1...Sc5
- 2.Bf5#
- 1...Sd6
- 2.Qxc6#
- 1...a5
- 2.Bf5#
- 1...c5
- 2.Bf5#
- 1...e6
- 2.Qh7#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 17
- REMOVED MATES = 3
- Sets
- R(k);N_GUARD::QAB1(A),XR(k)
- B(j);N_GUARD::QAR2(A),XB(j)
- B(j);N_GUARD::B(F),XB(j)
- S(a);N_GUARD::QAB1(A),XS(a)
- S(a);N_GUARD,XB(F)::QAB1(A)
- S(h);S_CUTR(k)::QAB1(A)
- P(i);S_CUTB(j)::QAR2(A)
- Tries
- Try
- B(F);CHECK
- Refutation
- Q(b);XB(F)
- Try
- B(F);
- Threat
- DUALS(3)
- Vars
- Q(b);XP(E)::R(C)
- R(c);XR(C)::QAR2(A)
- R(k);XB(F)::QAR2(A)
- Q(b);::QAR2(A)
- S(h);::QAR2(A)
- Refutation
- Q(b);
- Try
- Q(A);CHECK
- Refutation
- Q(b);XQ(A)
- Try
- Q(A);CHECK
- Refutation
- Q(b);P_SPINQ(b)
- Try
- Actual
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(b);XP(E)::R(C)
- Q(b);XB(F)::R(C)
- R(c);XR(C)::B(F)
- R(k);XQ(A)::B(F)
- B(j);XQ(A)::R(C)
- S(a);XB(F)::R(C)
- Q(b);::B(F)
- Q(b);::R(C)
- R(c);::B(F)
- S(a);::B(F)
- S(h);::B(F)
- S(h);S_CUTR(k)::QAB(A),XP(g)
- P(f);::B(F)
- P(g);::B(F)
- P(i);OGATE::QAB(A)
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).