MESON Chess Problem Database
Problem Display
PID: 105458 (5B1b/8/2pN1kpR/2K1Rp2/7n/3N2Q1/6n1/7b w - - 0 1)
Bron, Vladimir Akimovich
5th HM., Shakhmatny Listok, 1927
#2
7 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bg7
- 2.Be7#
- 1...Se1
- 2.Qxh4#
- 1...Se3
- 2.Qxh4#
- 1...Sf4
- 2.Qxh4#
- 1...Sf3
- 2.Rxg6#
- 2.Qxg6#
- 1...f4
- 2.Qg5#
- 1...Bg7
- Tries
- 1.Kb4?
- 1...Bg7
- 2.Be7#
- 1...Se1
- 2.Qxh4#
- 1...Se3
- 2.Qxh4#
- 1...Sf4
- 2.Qxh4#
- 1...Sf3
- 2.Rxg6#
- 2.Qxg6#
- 1...f4
- 2.Qg5#
- 1...c5+!
- 1...Bg7
- 1.Kb6?
- 1...Bg7
- 2.Be7#
- 1...Se1
- 2.Qxh4#
- 1...Se3
- 2.Qxh4#
- 1...Sf4
- 2.Qxh4#
- 1...Sf3
- 2.Rxg6#
- 2.Qxg6#
- 1...f4
- 2.Qg5#
- 1...c5!
- 1...Bg7
- 1.Re4?
- 1...fxe4
- 2.Qe5#
- 1...Se1
- 2.Qxh4#
- 1...Bg7
- 2.Be7#
- 1...Se3
- 2.Qxh4#
- 1...Sf4
- 2.Qxh4#
- 1...Sf3
- 2.Rxg6#
- 2.Qxg6#
- 1...f4!
- 1...fxe4
- 1.Rxf5+?
- 1...Sxf5
- 2.Rxg6#
- 2.Qxg6#
- 1...Ke6!
- 1...Sxf5
- 1.Rh5?
- threat
- 2.Qg5#
- 1...gxh5
- 2.Be7#
- 1...g5
- 2.Qxg5#
- 1...Sf3!
- threat
- 1.Rh7?
- threat
- 2.Se8#
- 2.Be7#
- 2.Rf7#
- 1...Bg7
- 2.Be7#
- 2.Bxg7#
- 1...g5!
- threat
- 1.Qf4?
- 1...Se1
- 2.Qxh4#
- 1...Bg7
- 2.Be7#
- 1...Se3
- 2.Qxh4#
- 1...Sf3
- 2.Qxf5#
- 1...Sxf4!
- 1...Se1
- 1.Qg4?
- 1...Se1
- 2.Qxh4#
- 1...Bg7
- 2.Be7#
- 1...Se3
- 2.Qxh4#
- 1...Sf4
- 2.Qxh4#
- 1...Sf3
- 2.Rxg6#
- 2.Qxf5#
- 2.Qxg6#
- 1...f4
- 2.Re6#
- 2.Qe6#
- 2.Qg5#
- 1...fxg4!
- 1...Se1
- 1.Kb4?
- Keys
- 1.Qh3!
- 1...Kg5
- 2.Se4#
- 1...Se1
- 2.Qxh4#
- 1...Bg7
- 2.Be7#
- 1...Se3
- 2.Qxh4#
- 1...Sf4
- 2.Qxh4#
- 1...Sf3
- 2.Qxf5#
- 1...f4
- 2.Qe6#
- 1...Kg5
- 1.Qh3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(h);SBLOCK::B(G)
- S(b);N_GUARD::QAB(B),XS(c)
- P(d);::QAB1(B)
- Tries
- Try
- K(C);S_FLIGHT
- Vars
- B(h);SBLOCK::B(G)
- S(b);N_GUARD::QAB(B),XS(c)
- P(d);::QAB1(B)
- Refutation
- P(e);CHECK
- Try
- K(C);S_FLIGHT
- Vars
- B(h);SBLOCK::B(G)
- S(b);N_GUARD::QAB(B),XS(c)
- P(d);::QAB1(B)
- Refutation
- P(e);
- Try
- R(D);
- Vars
- P(d);XR(D)::QAB1(B)
- S(b);N_GUARD::QAB(B),XS(c)
- B(h);SBLOCK::B(G)
- Refutation
- P(d);
- Try
- R(D);CHECK,XP(d)
- Refutation
- K(f);P-FLIGHT
- Try
- R(F);N_PINP(g)
- Threat
- QAB1(B)
- Vars
- P(g);XR(F)::B(G)
- P(g);::QAB1(B),XP(g)
- Refutation
- S(c);
- Try
- R(F);N_PINP(g)
- Threat
- DUALS(3)
- Refutation
- P(g);
- Try
- Q(B);N_PINP(g),P_PINP(d)
- Vars
- S(b);N_GUARD::QAB(B),XS(c)
- B(h);SBLOCK::B(G)
- S(c);N_GUARD::QAR1(B),XP(d)
- Refutation
- S(b);N_SPINP(d),P_SPINP(g),XQ(B)
- Try
- Q(B);
- Vars
- S(b);N_GUARD::QAB(B),XS(c)
- B(h);SBLOCK::B(G)
- Refutation
- P(d);XQ(B)
- Try
- Actual
- Q(B);
- Vars
- K(f);N_SPINP(g),P_SPINP(d),S_FLIGHT::S(E)
- S(b);N_GUARD::QAB(B),XS(c)
- B(h);SBLOCK::B(G)
- S(c);N_GUARD::QAR1(B),XP(d)
- P(d);OGATE::QAR1(B)
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).