MESON Chess Problem Database
Problem Display
PID: 159458 (5Q1n/4rP1q/5pkp/P4N2/r3R1bK/b2N4/8/1B3R2 w - - 0 1)
Lang, Urs
1st Comm., Neue Zurcher Zeitung, 2008-2009
#2
9 + 9
| 15527 | schachkunst (1997-2010) (Hoffmann) | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Qg8
- 2.Qxg8#
- 1...Qxf7
- 2.Qxh6#
- 1...Qg7
- 2.Qxg7#
- 1...Rb4
- 2.Sxe7#
- 1...Rxa5
- 2.Rxg4#
- 1...Bc1
- 2.Sxe7#
- 1...Bb2
- 2.Sxe7#
- 1...Bb4
- 2.Rxg4#
- 1...Bxf5
- 2.Sf4#
- 1...Qg8
- Tries
- 1.Rxa4?
- threat
- 2.Sf4#
- 2.Rxg4#
- 1...Qxf7
- 2.Qxh6#
- 1...Bxf5
- 2.Sf4#
- 1...Sxf7
- 2.Sf4#
- 1...Qg8
- 2.Qxg8#
- 1...Qg7
- 2.Qxg7#
- 1...Bf3
- 2.Sf4#
- 1...Bc1
- 2.Sxe7#
- 1...Bb4
- 2.Sf4#
- 1...Bd6
- 2.Rxg4#
- 1...Bd1
- 2.Sf4#
- 1...Be2
- 2.Sf4#
- 1...Bh3
- 2.Sf4#
- 1...Bh5
- 2.Sf4#
- 1...h5
- 2.Sf4#
- 1...Re4!
- threat
- 1.Rb4?
- threat
- 2.Sf4#
- 2.Sxe7#
- 1...Qxf7
- 2.Qxh6#
- 1...Rxb4
- 2.Sxe7#
- 1...Rxf7
- 2.Sf4#
- 1...Bxb4
- 2.Sf4#
- 1...Bxf5
- 2.Sf4#
- 1...Qg8
- 2.Qxg8#
- 1...Qg7
- 2.Qxg7#
- 1...Re1
- 2.Sf4#
- 1...Re2
- 2.Sf4#
- 1...Re3
- 2.Sf4#
- 1...Re5
- 2.Sf4#
- 1...Re6
- 2.Sf4#
- 1...Ra7
- 2.Sf4#
- 1...Rb7
- 2.Sf4#
- 1...Rc7
- 2.Sf4#
- 1...Rd7
- 2.Sf4#
- 1...Re8
- 2.Sf4#
- 1...Bc1
- 2.Sxe7#
- 1...Re4!
- threat
- 1.Qg8+?
- 1...Qg7
- 2.Qxg7#
- 2.f8S#
- 1...Qxg8!
- 1...Qg7
- 1.Rxa4?
- Keys
- 1.Sb4!
- threat
- 2.Sxe7#
- 2.Rxg4#
- 1...Qxf7
- 2.Qxh6#
- 1...Rxb4
- 2.Sxe7#
- 1...Rxe4
- 2.Se7#
- 1...Rxf7
- 2.Rxg4#
- 1...Bxb4
- 2.Rxg4#
- 1...Bxf5
- 2.Rg4#
- 1...Sxf7
- 2.Sxe7#
- 1...Qg8
- 2.Qxg8#
- 1...Qg7
- 2.Qxg7#
- 1...Bf3
- 2.Sxe7#
- 1...Re5
- 2.Rxg4#
- 1...Re6
- 2.Rxg4#
- 1...Ra7
- 2.Rxg4#
- 1...Rb7
- 2.Rxg4#
- 1...Rc7
- 2.Rxg4#
- 1...Rd7
- 2.Rxg4#
- 1...Re8
- 2.Rxg4#
- 1...Bc1
- 2.Sxe7#
- 1...Bd1
- 2.Sxe7#
- 1...Be2
- 2.Sxe7#
- 1...Bh3
- 2.Sxe7#
- 1...Bh5
- 2.Sxe7#
- 1...h5
- 2.Sxe7#
- threat
- 1.Sb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 16
- REMOVED MATES = 2
- Sets
- Q(h);N_GUARD::QAR2(I),XQ(h)
- Q(h);N_GUARD,SBLOCK,XP(H)::QAR1(I),XP(f)
- Q(h);N_GUARD::QAR1(I),XQ(h)
- R(b);S_CUTB(a)::S(G),XR(g)
- R(b);N_GUARD,XP(F)::R(D),XB(c)
- B(a);N_GUARD::S(G),XR(g)
- B(a);S_CUTR(b)::R(D),XB(c)
- B(c);P_PINR(D),SBLOCK,XS(G)::S(C)
- Tries
- Try
- R(D);XR(b)
- Threat
- DUALS(2)
- Vars
- Q(h);N_GUARD,SBLOCK,XP(H)::QAR1(I),XP(f)
- B(c);XS(G)::S(C)
- S(i);XP(H)::S(C)
- Q(h);N_GUARD::QAR2(I),XQ(h)
- Q(h);N_GUARD::QAR1(I),XQ(h)
- B(c);::S(C)
- B(a);N_GUARD::S(G),XR(g)
- B(a);::S(C)
- B(a);::R(D),XB(c)
- P(f);::S(C)
- Refutation
- R(g);
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- Q(h);N_GUARD,SBLOCK,XP(H)::QAR1(I),XP(f)
- R(b);XR(D)::S(G),XR(g)
- R(g);XP(H)::S(C)
- B(a);XR(D)::S(C)
- B(c);P_PINR(D),XS(G)::S(C)
- Q(h);N_GUARD::QAR2(I),XQ(h)
- Q(h);N_GUARD::QAR1(I),XQ(h)
- R(g);::S(C)
- B(a);::S(G),XR(g)
- Refutation
- R(g);
- Try
- Q(I);CHECK
- Refutation
- Q(h);XQ(I)
- Try
- Actual
- S(C);
- Threat
- DUALS(2)
- Vars
- Q(h);N_GUARD,SBLOCK,XP(H)::QAR1(I),XP(f)
- R(b);XS(C)::S(G),XR(g)
- R(g);XR(D)::S(G)
- R(g);XP(H)::R(D),XB(c)
- B(a);XS(C)::R(D),XB(c)
- B(c);XS(G)::R(D)
- S(i);XP(H)::S(G),XR(g)
- Q(h);N_GUARD::QAR2(I),XQ(h)
- Q(h);N_GUARD::QAR1(I),XQ(h)
- B(c);::S(G),XR(g)
- R(g);::R(D),XB(c)
- B(a);::S(G),XR(g)
- P(f);::S(G),XR(g)
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).