MESON Chess Problem Database
Problem Display
PID: 91748 (2bN1nB1/B1N1p3/2p2k2/R5Rq/n3p2r/8/2p5/K1Q5 w - - 0 1)
Prins, Hendrik
Probleemblad, 1987
#2
8 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Se8#
- 1...Qe2
- 2.Se8#
- 1...Qf3
- 2.Se8#
- 1...Qg4
- 2.Se8#
- 1...Qe8
- 2.Sxe8#
- 1...Qxg5
- 2.Qxg5#
- 1...Qh6
- 2.Se8#
- 1...Qh7
- 2.Se8#
- 1...Qh8
- 2.Se8#
- 1...Bf5
- 2.Raxf5#
- 1...Ba6
- 2.Raf5#
- 1...Be6
- 2.Bd4#
- 1...Bb7
- 2.Raf5#
- 1...Se6
- 2.Raf5#
- 1...Sg6
- 2.Se8#
- 1...Sd7
- 2.Raf5#
- 1...c5
- 2.Sd5#
- 1...Qd1
- Tries
- 1.Sce6?
- threat
- 2.Bd4#
- 2.Raf5#
- 1...Qxg5
- 2.Qxg5#
- 1...Bxe6
- 2.Bd4#
- 1...Sxe6
- 2.Raf5#
- 1...Qd1
- 2.Raf5#
- 1...Qf3
- 2.Bd4#
- 1...Qg4
- 2.Bd4#
- 1...Qg6
- 2.Bd4#
- 1...Qh7
- 2.Bd4#
- 1...Rf4
- 2.Bd4#
- 2.Qxf4#
- 1...Sc5
- 2.Qb2#
- 1...Sb6
- 2.Raf5#
- 2.Qb2#
- 1...Sg6
- 2.Raf5#
- 1...Sd7
- 2.Raf5#
- 1...e3
- 2.Raf5#
- 1...c5!
- threat
- 1.Be6?
- threat
- 2.Bd4#
- 2.Raf5#
- 1...Qxg5
- 2.Qxg5#
- 1...Bxe6
- 2.Bd4#
- 1...Sxe6
- 2.Raf5#
- 1...Qg6
- 2.Bd4#
- 1...Sg6
- 2.Se8#
- 1...Qd1
- 2.Se8#
- 2.Raf5#
- 1...Qf3
- 2.Se8#
- 2.Bd4#
- 1...Qg4
- 2.Se8#
- 2.Bd4#
- 1...Qh7
- 2.Se8#
- 2.Bd4#
- 1...Rf4
- 2.Bd4#
- 2.Qxf4#
- 1...Sb6
- 2.Raf5#
- 2.Qb2#
- 1...Sd7
- 2.Raf5#
- 1...e3
- 2.Raf5#
- 1...c5
- 2.Sd5#
- 1...Sc5!
- threat
- 1.Qf4+?
- 1...Bf5
- 2.Raxf5#
- 2.Qxf5#
- 1...Rxf4!
- 1...Bf5
- 1.Qf1+?
- 1...Qf3
- 2.Se8#
- 1...Bf5
- 2.Raxf5#
- 2.Qxf5#
- 1...Rf4!
- 1...Qf3
- 1.Sce6?
- Keys
- 1.Sde6!
- threat
- 2.Bd4#
- 2.Raf5#
- 1...Qxg5
- 2.Qxg5#
- 1...Bxe6
- 2.Bd4#
- 1...Sxe6
- 2.Raf5#
- 1...Qd1
- 2.Se8#
- 2.Raf5#
- 1...Qf3
- 2.Se8#
- 2.Bd4#
- 1...Qg4
- 2.Se8#
- 2.Bd4#
- 1...Qg6
- 2.Bd4#
- 1...Qh7
- 2.Se8#
- 2.Bd4#
- 1...Rf4
- 2.Bd4#
- 2.Qxf4#
- 1...Sc5
- 2.Qb2#
- 1...Sb6
- 2.Raf5#
- 2.Qb2#
- 1...Sg6
- 2.Se8#
- 2.Raf5#
- 1...Sd7
- 2.Raf5#
- 1...e3
- 2.Raf5#
- 1...c5
- 2.Sd5#
- threat
- 1.Sde6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 12
- Sets
- Q(e);N_GUARD,P_PINQ(B)::S(F)
- Q(e);N_GUARD::S(F)
- Q(e);N_GUARD::S(F),XQ(e)
- Q(e);OGATE,XR(D)::QAB1(B),XQ(e)
- B(i);N_GUARD::R1(C),XB(i)
- B(i);N_GUARD::R1(C)
- B(i);S_CUTP(h)::B(E)
- S(j);S_CUTB(i)::R1(C)
- S(j);S_CUTQ(e)::S(F)
- P(f);N_GUARD::S(F)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(e);OGATE,XR(D)::QAB1(B),XQ(e)
- B(i);XS(F)::B(E)
- S(j);XS(F)::R1(C)
- Q(e);P_PINQ(B)::R1(C)
- Q(e);::B(E)
- S(b);N_GUARD::QAB(B)
- S(j);::R1(C)
- P(c);::R1(C)
- Refutation
- P(f);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- Q(e);OGATE,XR(D)::QAB1(B),XQ(e)
- B(i);XB(H)::B(E)
- S(j);XB(H)::R1(C)
- Q(e);::B(E)
- S(j);S_CUTQ(e)::S(F)
- S(j);::R1(C)
- P(c);::R1(C)
- P(f);N_GUARD::S(F)
- Refutation
- S(b);
- Try
- Q(B);CHECK
- Refutation
- R(d);XQ(B)
- Try
- Q(B);CHECK
- Vars
- Q(e);P_SPINQ(e)::S(F)
- Refutation
- R(d);P_SPINR(d)
- Try
- Actual
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(e);OGATE,XR(D)::QAB1(B),XQ(e)
- B(i);XS(G)::B(E)
- S(j);XS(G)::R1(C)
- Q(e);::B(E)
- S(b);N_GUARD::QAB(B)
- S(j);::R1(C)
- P(c);::R1(C)
- P(f);N_GUARD::S(F)
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).