MESON Chess Problem Database
Problem Display
PID: 245891 (8/8/7p/3N3n/6pp/4Q1Pk/8/6K1 w - - 0 1)
Groeneveld, Cornelis
Europa-Rochade, 1998
#2
4 + 5
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sxg3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sf6
- 2.Sf4#
- 1...Sg7
- 2.Sf4#
- 1...Sxg3
- Tries
- 1.Qd2?
- threat
- 2.Qg2#
- 2.Qh2#
- 1...Kxg3
- 2.Qc3#
- 2.Qe3#
- 2.Qg2#
- 2.Qd3#
- 1...Sf4
- 2.Qh2#
- 1...hxg3!
- threat
- 1.Qf2?
- threat
- 2.Qg2#
- 2.Qh2#
- 1...Sf4
- 2.Sxf4#
- 2.Qh2#
- 1...hxg3!
- threat
- 1.Qg5?
- threat
- 2.Qxh4#
- 1...Kxg3
- 2.Qe3#
- 1...Sxg3
- 2.Sf4#
- 1...hxg3
- 2.Qxh5#
- 1...hxg5!
- threat
- 1.Qe1?
- 1...Sxg3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sf6
- 2.Sf4#
- 1...Sg7
- 2.Sf4#
- 1...hxg3!
- 1...Sxg3
- 1.Qe2?
- threat
- 2.Qg2#
- 2.Qh2#
- 1...Kxg3
- 2.Qd3#
- 2.Qg2#
- 2.Qe3#
- 1...Sf4
- 2.Qh2#
- 1...hxg3!
- threat
- 1.Qa3?
- 1...Sxg3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sf6
- 2.Sf4#
- 1...Sg7
- 2.Sf4#
- 1...hxg3!
- 1...Sxg3
- 1.Qb3?
- 1...Sxg3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sf6
- 2.Sf4#
- 1...Sg7
- 2.Sf4#
- 1...hxg3!
- 1...Sxg3
- 1.Qc3?
- 1...Sxg3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sf6
- 2.Sf4#
- 1...Sg7
- 2.Sf4#
- 1...hxg3!
- 1...Sxg3
- 1.Qd3?
- 1...Sxg3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sf6
- 2.Sf4#
- 1...Sg7
- 2.Sf4#
- 1...hxg3!
- 1...Sxg3
- 1.Qf3?
- threat
- 2.Qg2#
- 1...hxg3
- 2.Qh1#
- 1...Sf4
- 2.Sxf4#
- 1...gxf3!
- threat
- 1.Qe4?
- threat
- 2.Qg2#
- 1...Kxg3
- 2.Qg2#
- 2.Qd3#
- 2.Qe3#
- 1...hxg3
- 2.Qh1#
- 1...Sf4!
- threat
- 1.Qd2?
- Keys
- 1.Qxh6!
- 1...Kxg3
- 2.Qe3#
- 1...Sxg3
- 2.Sf4#
- 1...hxg3
- 2.Qxh5#
- 1...Sf4
- 2.Qxh4#
- 1...Sf6
- 2.Qxh4#
- 1...Sg7
- 2.Qxh4#
- 1...Kxg3
- 1.Qxh6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD,P_SPINS(d),XP(C)::S(D)
- S(d);N_GUARD::S(D),XS(d)
- S(d);N_GUARD::S(D)
- Tries
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- S(d);::QAR1(B)
- Refutation
- P(c);XP(C)
- Try
- Q(B);
- Threat
- DUALS(2)
- Refutation
- P(c);XP(C)
- Try
- Q(B);
- Threat
- QAR1(B),XP(c)
- Vars
- K(a);OGATEB,P-FLIGHT,P_SPINP(b),XP(C)::QAR2(B)
- S(d);N_GUARD,SBLOCK,XP(C)::S(D)
- P(c);OGATEB,SBLOCK,XP(C)::QAR2(B),XS(d)
- Refutation
- P(e);XQ(B)
- Try
- Q(B);
- Vars
- S(d);N_GUARD,XP(C)::S(D)
- S(d);N_GUARD::S(D),XS(d)
- S(d);N_GUARD::S(D)
- Refutation
- P(c);XP(C)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- S(d);::QAR1(B)
- Refutation
- P(c);XP(C)
- Try
- Q(B);
- Vars
- S(d);N_GUARD,P_SPINS(d),XP(C)::S(D)
- S(d);N_GUARD::S(D),XS(d)
- S(d);N_GUARD::S(D)
- Refutation
- P(c);P_SPINP(c),XP(C)
- Try
- Q(B);
- Vars
- S(d);N_GUARD,P_SPINS(d),XP(C)::S(D)
- S(d);N_GUARD::S(D),XS(d)
- S(d);N_GUARD::S(D)
- Refutation
- P(c);P_SPINP(c),XP(C)
- Try
- Q(B);
- Vars
- S(d);N_GUARD,P_SPINS(d),XP(C)::S(D)
- S(d);N_GUARD::S(D),XS(d)
- S(d);N_GUARD::S(D)
- Refutation
- P(c);P_SPINP(c),XP(C)
- Try
- Q(B);
- Vars
- S(d);N_GUARD,P_SPINS(d),XP(C)::S(D)
- S(d);N_GUARD::S(D),XS(d)
- S(d);N_GUARD::S(D)
- Refutation
- P(c);P_SPINP(c),XP(C)
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- P(c);P_SPINP(c),SBLOCK,XP(C)::QAR2(B)
- S(d);N_GUARD::S(D),XS(d)
- Refutation
- P(b);XQ(B)
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- P(c);SBLOCK,XP(C)::QAR2(B)
- Refutation
- S(d);
- Try
- Actual
- Q(B);XP(e)
- Vars
- K(a);OGATEB,P-FLIGHT,XP(C)::QAR2(B)
- S(d);N_GUARD,P_SPINP(c),SBLOCK,XP(C)::S(D)
- P(c);OGATEB,P_SPINS(d),SBLOCK,XP(C)::QAR2(B),XS(d)
- S(d);OGATE,P_SPINP(c)::QAR1(B),XP(c)
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).