MESON Chess Problem Database
Problem Display
PID: 48449 (6r1/4Qp2/4pp2/2q2B1n/3k2P1/n1N1NR2/1Pp1P3/2K3B1 w - - 0 1)
Hjelle, David
3rd HM., Het Belgisch Schaakbord (L'Echiquier Belge), 1976-1977
#2
10 + 9
| 5110 | Bekroonde Problemen | 2002 |
SOLUTION
- SOUND
- Sets
- 1...Ke5
- 2.Qxc5#
- 1...Qd6
- 2.Qxd6#
- 1...Qa7
- 2.Qd6#
- 1...Qxc3
- 2.Qd6#
- 1...Qc8
- 2.Qd6#
- 1...Ke5
- Tries
- 1.Sed1+?
- 1...Ke5
- 2.Qxc5#
- 1...Kc4!
- 1...Ke5
- 1.Sf1+?
- 1...Ke5
- 2.Qxc5#
- 1...Kc4!
- 1...Ke5
- 1.Sxc2+?
- 1...Ke5
- 2.Qxc5#
- 1...Kc4!
- 1...Ke5
- 1.Sg2+?
- 1...Ke5
- 2.Qxc5#
- 1...Kc4!
- 1...Ke5
- 1.Bd3?
- threat
- 2.Sc4#
- 1...Ke5
- 2.Qxc5#
- 1...Qxc3
- 2.Qd6#
- 1...Rxg4
- 2.Sxg4#
- 1...Qc4
- 2.Sxc4#
- 1...Qe5
- 2.Sxc2#
- 2.Sf5#
- 1...Sc4
- 2.Sxc4#
- 1...Qg5!
- threat
- 1.Rf4+?
- 1...Ke5
- 2.Re4#
- 1...Sxf4!
- 1...Ke5
- 1.Qxe6?
- threat
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 2.Qe4#
- 1...Qxc3
- 2.Sxc2#
- 2.Qd5#
- 2.Qd6#
- 1...Qxf5
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 2.Sxf5#
- 1...Rxg4
- 2.Sxc2#
- 2.Sg2#
- 2.Sxg4#
- 1...Qb4
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 2.Qd5#
- 1...Qb6
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 2.Qd5#
- 1...Qd6
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 2.Qxd6#
- 1...Qa7
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 2.Qd5#
- 2.Qd6#
- 1...Qe7
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 2.Qd5#
- 1...Qf8
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 2.Qd5#
- 1...Qc4
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sxc4#
- 2.Sed5#
- 1...Qa5
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 1...Qb5
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 1...Qd5
- 2.Qxd5#
- 1...Qe5
- 2.Sxc2#
- 1...Qc6
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 1...Qc7
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 2.Qd5#
- 1...Qc8
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 2.Qd5#
- 2.Qd6#
- 1...Re8
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 1...Sc4
- 2.Sxc2#
- 2.Sxc4#
- 2.Qe4#
- 1...Sg3
- 2.Sed1#
- 2.Sf1#
- 2.Sxc2#
- 2.Sg2#
- 2.Sc4#
- 1...fxe6!
- threat
- 1.Sed1+?
- Keys
- 1.b3!
- threat
- 2.Sc4#
- 1...Kxc3
- 2.Sd5#
- 1...Ke5
- 2.Qxc5#
- 1...Qxc3
- 2.Qd6#
- 1...Rxg4
- 2.Sxg4#
- 1...Qc4
- 2.Sxc4#
- 1...Qe5
- 2.Sxc2#
- 1...Sc4
- 2.Sxc4#
- threat
- 1.b3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 3
- Sets
- K(c);P_SPINP(f),S_FLIGHT::QAR2(J),XQ(d)
- Q(d);N_GUARD::QAR2(J),XQ(d)
- Q(d);N_GUARD::QAR2(J)
- Q(d);N_GUARD,XS(E)::QAR2(J)
- Tries
- Try
- S(F);CHECK
- Vars
- K(c);P_SPINP(f),S_FLIGHT::QAR2(J),XQ(d)
- Refutation
- K(c);P-FLIGHT
- Try
- S(F);CHECK
- Vars
- K(c);P_SPINP(f),S_FLIGHT::QAR2(J),XQ(d)
- Refutation
- K(c);P-FLIGHT
- Try
- S(F);CHECK,XP(a)
- Vars
- K(c);P_SPINP(f),S_FLIGHT::QAR2(J),XQ(d)
- Refutation
- K(c);P-FLIGHT
- Try
- S(F);CHECK
- Vars
- K(c);P_SPINP(f),S_FLIGHT::QAR2(J),XQ(d)
- Refutation
- K(c);P-FLIGHT
- Try
- B(I);
- Threat
- B(B)+S(F)
- Vars
- K(c);P_SPINP(f),S_FLIGHT::QAR2(J),XQ(d)
- Q(d);N_GUARD,XS(E)::QAR2(J)
- R(i);XP(H)::B(B)+S(F),XR(i)
- Q(d);::B(B)+S(F),XQ(d)
- S(b);::B(B)+S(F),XS(b)
- Refutation
- Q(d);P_PINS(F)
- Try
- R(G);CHECK
- Vars
- K(c);P_SPINP(f),S_FLIGHT::R1(G)
- Refutation
- S(e);XR(G)
- Try
- Q(J);XP(f)
- Threat
- DUALS(6)
- Vars
- Q(d);N_GUARD::QAR1(J),XQ(d)
- Q(d);::B(B)+S(F),DCHECK,XP(a)
- Refutation
- P(h);XQ(J)
- Try
- Actual
- P(C);
- Threat
- B(B)+S(F)
- Vars
- K(c);S_FLIGHT,XS(E)::R(G)+S(F),DCHECK
- K(c);P_SPINP(f),S_FLIGHT::QAR2(J),XQ(d)
- Q(d);N_GUARD,SBLOCK,XS(E)::QAR2(J)
- R(i);XP(H)::B(B)+S(F),XR(i)
- Q(d);::B(B)+S(F),XQ(d)
- Q(d);SBLOCK::B(B)+S(F),DCHECK,XP(a)
- S(b);::B(B)+S(F),XS(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).