MESON Chess Problem Database
Problem Display
PID: 241386 (1BBr1R1b/5R2/2N5/3nn3/2P1k1P1/Q2pp3/6K1/8 w - - 0 1)
Hjelle, David
Parallele 50, 1947
#2
9 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sc3
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sf4+
- 2.Rxf4#
- 1...Sb6
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Se7
- 2.Rf4#
- 1...Sf3
- 2.Bf5#
- 1...Sxc4
- 2.Bf5#
- 1...Sxg4
- 2.Bf5#
- 1...Sg6
- 2.Bf5#
- 1...Sxf7
- 2.Bf5#
- 1...Sc3
- Tries
- 1.Qb2?
- threat
- 2.Qd4#
- 1...Sf4+
- 2.Rxf4#
- 1...Sxc4
- 2.Bf5#
- 1...Sxg4
- 2.Bf5#
- 1...Sxc6
- 2.Bf5#
- 1...Sxf7
- 2.Bf5#
- 1...Sf6
- 2.Qxe5#
- 1...Sc3
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sb6
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Se7
- 2.Rf4#
- 1...Sf3
- 2.Bf5#
- 1...Sg6
- 2.Bf5#
- 1...Sd7!
- threat
- 1.Qa1?
- threat
- 2.Qd4#
- 1...Sf4+
- 2.Rxf4#
- 1...Sxc4
- 2.Bf5#
- 1...Sxg4
- 2.Bf5#
- 1...Sxc6
- 2.Bf5#
- 1...Sxf7
- 2.Bf5#
- 1...Sf6
- 2.Qxe5#
- 1...Sc3
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sb6
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Se7
- 2.Rf4#
- 1...Sf3
- 2.Bf5#
- 1...Sg6
- 2.Bf5#
- 1...Sd7!
- threat
- 1.Qc3?
- threat
- 2.Qd4#
- 1...Sf4+
- 2.Rxf4#
- 1...Sxc3
- 2.Rf4#
- 1...Sxc4
- 2.Bf5#
- 1...Sxg4
- 2.Bf5#
- 1...Sxc6
- 2.Bf5#
- 1...Sxf7
- 2.Bf5#
- 1...Sf6
- 2.Qxe5#
- 1...Sb4
- 2.Rf4#
- 1...Sb6
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Se7
- 2.Rf4#
- 1...Sf3
- 2.Bf5#
- 1...Sg6
- 2.Bf5#
- 1...Sd7!
- threat
- 1.Qxd3+?
- 1...Sxd3
- 2.Bf5#
- 1...Kxd3!
- 1...Sxd3
- 1.Qb2?
- Keys
- 1.Qc5!
- threat
- 2.Qd4#
- 1...Sf4+
- 2.Rxf4#
- 1...Sxc4
- 2.Bf5#
- 1...Sxg4
- 2.Bf5#
- 1...Sxc6
- 2.Bf5#
- 1...Sxf7
- 2.Bf5#
- 1...Sf6
- 2.Qxe5#
- 1...Sc3
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sb6
- 2.Rf4#
- 1...Sc7
- 2.Rf4#
- 1...Se7
- 2.Rf4#
- 1...Sf3
- 2.Bf5#
- 1...Sg6
- 2.Bf5#
- 1...Sd7
- 2.Qxd5#
- threat
- 1.Qc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD::R1(F)
- S(d);CHECK,N_GUARD::R1(F),XS(d)
- S(e);::B(H)
- S(e);XP(C)::B(H)
- S(e);XP(D)::B(H)
- S(e);XR(F)::B(H)
- Tries
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- S(d);CHECK,N_GUARD::R1(F),XS(d)
- S(e);XP(C)::B(H)
- S(e);XP(D)::B(H)
- S(e);XS(E)::B(H)
- S(e);XR(F)::B(H)
- S(d);S_CUTB(g)::QAR1(B),XS(e)
- S(d);N_GUARD::R1(F)
- S(e);::B(H)
- Refutation
- S(e);
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- S(d);CHECK,N_GUARD::R1(F),XS(d)
- S(e);XP(C)::B(H)
- S(e);XP(D)::B(H)
- S(e);XS(E)::B(H)
- S(e);XR(F)::B(H)
- S(d);S_CUTB(g)::QAR1(B),XS(e)
- S(d);N_GUARD::R1(F)
- S(e);::B(H)
- Refutation
- S(e);
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- S(d);CHECK,N_GUARD::R1(F),XS(d)
- S(d);N_GUARD,XQ(B)::R1(F)
- S(e);XP(C)::B(H)
- S(e);XP(D)::B(H)
- S(e);XS(E)::B(H)
- S(e);XR(F)::B(H)
- S(d);S_CUTB(g)::QAR1(B),XS(e)
- S(d);N_GUARD::R1(F)
- S(e);::B(H)
- Refutation
- S(e);
- Try
- Q(B);CHECK,XP(a)
- Vars
- S(e);SBLOCK,XQ(B)::B(H)
- Refutation
- K(c);S_FLIGHT,XQ(B)
- Try
- Actual
- Q(B);
- Threat
- QAR1(B)
- Vars
- S(d);CHECK,N_GUARD::R1(F),XS(d)
- S(e);XP(C)::B(H)
- S(e);XP(D)::B(H)
- S(e);XS(E)::B(H)
- S(e);XR(F)::B(H)
- S(d);OGATE::QAR1(B),XS(e)
- S(d);N_GUARD::R1(F)
- S(e);::B(H)
- S(e);S_CUTR(f)::QAB1(B),XS(d)
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).