MESON Chess Problem Database
Problem Display
PID: 263835 (3B2bn/6p1/2N3P1/Rn2pk2/1Q2pN2/4P2K/8/8 w - - 0 1)
Poortman, CD
Tijdschrift vd NSB, 1934
#2
8 + 7
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Sa3
- 2.Sd4#
- 2.Rxe5#
- 1...Sc3
- 2.Sd4#
- 2.Rxe5#
- 1...Sd4
- 2.Sxd4#
- 2.Rxe5#
- 1...Sd6
- 2.Sd4#
- 2.Rxe5#
- 1...Sa7
- 2.Sd4#
- 2.Rxe5#
- 1...Sc7
- 2.Sd4#
- 2.Rxe5#
- 1...Sa3
- Tries
- 1.Rxb5?
- threat
- 2.Sd4#
- 2.Rxe5#
- 1...Sxg6
- 2.Sd4#
- 1...Sf7
- 2.Sd4#
- 1...Bd5!
- threat
- 1.Qe7?
- threat
- 2.Qg5#
- 2.Qxe5#
- 1...Sxg6
- 2.Qg5#
- 1...Be6
- 2.Qg5#
- 2.Qxe6#
- 1...Sf7
- 2.Qe6#
- 2.Qd7#
- 1...exf4!
- threat
- 1.Qxb5?
- threat
- 2.Sd4#
- 2.Qxe5#
- 1...Sxg6
- 2.Sd4#
- 1...Sf7
- 2.Sd4#
- 1...Bd5!
- threat
- 1.Rxb5?
- Keys
- 1.Qd6!
- threat
- 2.Qxe5#
- 1...Sxd6
- 2.Sd4#
- 2.Rxe5#
- 1...Sxg6
- 2.Qxg6#
- 1...exf4
- 2.Sd4#
- 1...Sf7
- 2.Qe6#
- 2.Qd7#
- threat
- 1.Qd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Tries
- Try
- R(E);P_PINP(c),XS(b)
- Threat
- DUALS(2)
- Vars
- S(g);XP(G)::S(F)
- S(g);::S(F)
- Refutation
- B(f);N_SPINP(c)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- S(g);XP(G)::QAR1(C)
- Refutation
- P(c);P_SPINS(b),XS(D)
- Try
- Q(C);P_PINP(c),XS(b)
- Threat
- DUALS(2)
- Vars
- S(g);XP(G)::S(F)
- S(g);::S(F)
- Refutation
- B(f);N_SPINP(c)
- Try
- Actual
- Q(C);
- Threat
- QAR1(C),XP(c)
- Vars
- S(g);OGATE,XP(G)::QAB1(C),XS(g)
- P(c);N_GUARD,P_SPINS(b),XS(D)::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).