MESON Chess Problem Database
Problem Display
PID: 241403 (8/2KpQbq1/2pN2p1/p1Pkn1p1/2R1n2r/1PBp1pr1/5p2/2bN4 w - - 0 1)
Hjelle, David
Parallele 50, 1949
#2
8 + 16
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qh6
- 2.Qxe5#
- 1...Qf8
- 2.Qxe5#
- 1...Qh7
- 2.Qxe5#
- 1...Qg8
- 2.Qxe5#
- 1...Bb2
- 2.Se3#
- 1...Ba3
- 2.Se3#
- 1...Be3
- 2.Sxe3#
- 1...Sd2
- 2.Se3#
- 1...Sxc3
- 2.Sxc3#
- 1...Sxd6
- 2.Qxd6#
- 1...Sf6
- 2.Qxe5#
- 1...Sg4
- 2.Qxe4#
- 1...d2
- 2.Se3#
- 1...Qh6
- Tries
- 1.Sxe4?
- threat
- 2.Rd4#
- 2.Qd6#
- 1...Rxe4
- 2.Qd6#
- 1...Qf6
- 2.Sxf6#
- 2.Rd4#
- 1...Qf8
- 2.Sf6#
- 2.Rd4#
- 2.Qxe5#
- 1...Be3
- 2.Sxe3#
- 2.Qd6#
- 1...Sg4
- 2.Qd6#
- 2.Qxd7#
- 1...d6
- 2.Rd4#
- 2.Qxd6#
- 1...Sxc4!
- threat
- 1.Sb7?
- threat
- 2.Rd4#
- 1...Sxc3
- 2.Sxc3#
- 2.Qd6#
- 1...Sxc5
- 2.Qd6#
- 1...Be3
- 2.Sxe3#
- 1...Sd2
- 2.Se3#
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sf6
- 2.Qd6#
- 2.Qxe5#
- 1...Sg4
- 2.Qxe4#
- 1...Sxc4!
- threat
- 1.Sc8?
- threat
- 2.Sb6#
- 2.Rd4#
- 1...Sxc3
- 2.Sxc3#
- 2.Sb6#
- 2.Qd6#
- 1...Sxc5
- 2.Sb6#
- 2.Qd6#
- 1...d6
- 2.Sb6#
- 1...Be3
- 2.Sxe3#
- 2.Sb6#
- 1...Sd2
- 2.Se3#
- 2.Sb6#
- 2.Qd6#
- 1...Sd6
- 2.Sb6#
- 2.Qxd6#
- 1...Sf6
- 2.Sb6#
- 2.Qd6#
- 2.Qxe5#
- 1...Sg4
- 2.Sb6#
- 2.Qxe4#
- 1...Sxc4!
- threat
- 1.Sxe4?
- Keys
- 1.Kb6!
- threat
- 2.Rd4#
- 1...Sxc4+
- 2.bxc4#
- 1...Sxc3
- 2.Sxc3#
- 1...Sxc5
- 2.Rxc5#
- 1...Sxd6
- 2.Qxd6#
- 1...Be3
- 2.Sxe3#
- 1...Sd2
- 2.Se3#
- 1...Sf6
- 2.Qxe5#
- 1...Sg4
- 2.Qxe4#
- threat
- 1.Kb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(p);N_GUARD::QAR1(H),XS(j)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- S(f);S_CUTB(a)::S(A)
- S(f);XB(C)::S(A),XS(f)
- S(f);OGATE,XS(F)::QAR1(H),XS(f)
- S(f);S_CUTQ(p)::QAR1(H),XS(j)
- S(j);OGATE::QAB1(H),XS(f)
- P(c);S_CUTB(a)::S(A)
- Tries
- Try
- S(F);XS(f)
- Threat
- DUALS(2)
- Vars
- R(g);XS(F)::QAR1(H)
- Refutation
- S(j);XR(D)
- Try
- S(F);
- Threat
- R1(D)
- Vars
- S(f);N_GUARD,XP(E)::QAR1(H)
- B(a);N_GUARD::S(A),XB(a)
- S(f);N_GUARD::QAR1(H),XS(f)
- S(j);OGATE::QAB1(H),XS(f)
- Refutation
- S(j);XR(D)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- P(n);::S(F)
- Refutation
- S(j);XR(D)
- Try
- Actual
- K(G);S_FLIGHT
- Threat
- R1(D)
- Vars
- S(j);CHECK,OGATE,XR(D)::P(B),XS(j)
- S(f);XB(C)::S(A),XS(f)
- S(f);OGATE,XP(E)::R1(D),XS(f)
- S(f);OGATE,XS(F)::QAR1(H),XS(f)
- B(a);N_GUARD,P_PINP(E)::S(A),XB(a)
- S(f);S_CUTB(a)::S(A)
- S(f);S_CUTQ(p)::QAR1(H),XS(j)
- S(j);OGATE::QAB1(H),XS(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).