MESON Chess Problem Database
Problem Display
PID: 225516 (N3B3/5R2/1P1kp1p1/6r1/1Pn1R2B/2N4p/p6b/K4b2 w - - 0 1)
Hjelle, David
Praca, 1958
#2
9 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Be7#
- 1...Rg2
- 2.Be7#
- 1...Rg3
- 2.Be7#
- 1...Rg4
- 2.Be7#
- 1...Ra5
- 2.Be7#
- 1...Rb5
- 2.Be7#
- 1...Rc5
- 2.Be7#
- 1...Rd5
- 2.Be7#
- 1...Re5
- 2.Be7#
- 1...Rf5
- 2.Be7#
- 1...Rh5
- 2.Be7#
- 1...Se5
- 2.Rd4#
- 1...Rg1
- Tries
- 1.b7?
- threat
- 2.b8Q#
- 2.b8B#
- 1...Re5
- 2.Be7#
- 2.b8Q#
- 2.b8B#
- 1...Rg1
- 2.Be7#
- 2.b8Q#
- 2.b8B#
- 1...Rg2
- 2.Be7#
- 2.b8Q#
- 2.b8B#
- 1...Rg3
- 2.Be7#
- 2.b8Q#
- 2.b8B#
- 1...Rg4
- 2.Be7#
- 2.b8Q#
- 2.b8B#
- 1...Ra5
- 2.Be7#
- 2.b8Q#
- 2.b8B#
- 1...Rb5
- 2.Be7#
- 1...Rc5
- 2.Be7#
- 1...Rd5
- 2.Be7#
- 2.b8Q#
- 2.b8B#
- 1...Rf5
- 2.Be7#
- 2.b8Q#
- 2.b8B#
- 1...Rh5
- 2.Be7#
- 2.b8Q#
- 2.b8B#
- 1...Be2
- 2.b8Q#
- 2.b8B#
- 1...Bg2
- 2.b8Q#
- 2.b8B#
- 1...Bd3
- 2.b8Q#
- 2.b8B#
- 1...Bg1
- 2.b8Q#
- 2.b8B#
- 1...Bg3
- 2.b8Q#
- 2.b8B#
- 1...Bf4
- 2.b8Q#
- 2.b8B#
- 1...Be5
- 2.b8Q#
- 2.b8B#
- 1...Sb2
- 2.b8Q#
- 2.b8B#
- 1...Sd2
- 2.b8Q#
- 2.b8B#
- 1...Sa3
- 2.b8Q#
- 2.b8B#
- 1...Se3
- 2.b8Q#
- 2.b8B#
- 1...Sa5
- 2.b8Q#
- 2.b8B#
- 1...Se5
- 2.Rd4#
- 2.b8Q#
- 2.b8B#
- 1...Sb6
- 2.b8Q#
- 2.b8B#
- 1...e5!
- threat
- 1.b7?
- Keys
- 1.Sc7!
- threat
- 2.Rxe6#
- 1...Re5
- 2.Be7#
- 1...Be5
- 2.Sb5#
- 1...Se5
- 2.Rd4#
- 1...e5
- 2.S3b5#
- threat
- 1.Sc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- R(f);OGATE::B(E)
- S(e);SBLOCK,S_CUTR(f)::R(D)
- Tries
- Try
- P(F);
- Threat
- P=Q
- Vars
- R(f);OGATE::B(E)
- B(a);::P=Q
- B(c);::P=Q
- B(c);P_PINS(B)::P=Q
- S(e);::P=Q
- Refutation
- P(h);
- Try
- Actual
- S(H);
- Threat
- R1(D),XP(h)
- Vars
- R(f);OGATE::B(E)
- B(c);P_PINS(B),S_CUTR(f)::S(H)
- S(e);SBLOCK,S_CUTR(f)::R(D)
- P(h);S_CUTR(f)::S(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).