MESON Chess Problem Database
Problem Display
PID: 241625 (7B/1K4n1/1pN1p2R/3k1B2/R1pPN3/P5br/Q7/5b2 w - - 0 1)
Hjelle, David
Magyar Sakkvilag, 1948
#2
10 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bg2
- 2.Qxc4#
- 1...Bd6
- 2.Sf6#
- 1...Sh5
- 2.Sb4#
- 2.Se7#
- 1...Se8
- 2.Sb4#
- 2.Se7#
- 1...exf5
- 2.Sc3#
- 1...e5
- 2.Sc3#
- 2.Rd6#
- 1...Bg2
- Tries
- 1.Bxg7?
- threat
- 2.Sb4#
- 2.Se7#
- 1...exf5
- 2.Sc3#
- 1...Be1
- 2.Se7#
- 1...Bh4
- 2.Sb4#
- 1...Bd6
- 2.Sf6#
- 1...e5
- 2.Sc3#
- 2.Rd6#
- 1...Be5!
- threat
- 1.Rb4?
- threat
- 2.Rb5#
- 1...exf5
- 2.Sc3#
- 1...Bd6
- 2.Sf6#
- 1...b5
- 2.Rxb5#
- 1...Sxf5!
- threat
- 1.Ra5+?
- 1...b5
- 2.Rxb5#
- 1...bxa5!
- 1...b5
- 1.Rxe6?
- threat
- 2.Sc3#
- 2.Sf6#
- 1...Sxe6
- 2.Sb4#
- 2.Se7#
- 1...Rh6
- 2.Sc3#
- 1...Be1
- 2.Sf6#
- 2.Re5#
- 2.Rd6#
- 1...Bf2
- 2.Sf6#
- 2.Re5#
- 2.Rd6#
- 1...Bh2
- 2.Sf6#
- 1...Bf4
- 2.Sf6#
- 1...Bh4
- 2.Re5#
- 2.Rd6#
- 1...Be5
- 2.Rxe5#
- 1...Bd6
- 2.Sf6#
- 2.Rxd6#
- 1...Bc7
- 2.Sf6#
- 1...Bb8
- 2.Sf6#
- 1...Sh5
- 2.Sc3#
- 2.Sb4#
- 2.Se7#
- 1...Se8
- 2.Sc3#
- 2.Sb4#
- 2.Se7#
- 1...Sxf5!
- threat
- 1.Qb3?
- threat
- 2.Qb5#
- 1...cxb3
- 2.Se7#
- 1...exf5
- 2.Sc3#
- 1...Bd6
- 2.Sf6#
- 1...b5
- 2.Qxb5#
- 1...Sxf5!
- threat
- 1.Qa1?
- threat
- 2.Sb4#
- 2.Se7#
- 1...exf5
- 2.Sc3#
- 1...Be1
- 2.Se7#
- 1...Bh4
- 2.Sb4#
- 1...Bd6
- 2.Sf6#
- 1...c3
- 2.Se7#
- 1...Sxf5!
- threat
- 1.Qb2?
- threat
- 2.Sb4#
- 2.Se7#
- 2.Qb5#
- 1...exf5
- 2.Sc3#
- 1...Be1
- 2.Se7#
- 2.Qb5#
- 1...Bh4
- 2.Sb4#
- 2.Qb5#
- 1...Bd6
- 2.Sf6#
- 1...c3
- 2.Se7#
- 1...b5
- 2.Sb4#
- 2.Se7#
- 2.Qxb5#
- 1...Sxf5!
- threat
- 1.Bxg7?
- Keys
- 1.Qb1!
- threat
- 2.Qb5#
- 1...Sxf5
- 2.Sb4#
- 1...exf5
- 2.Sc3#
- 1...Bd6
- 2.Sf6#
- 1...c3
- 2.Se7#
- 1...b5
- 2.Qxb5#
- threat
- 1.Qb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- B(a);N_GUARD::QAB1(A),XP(d)
- B(b);SBLOCK::S(E)
- P(g);XB(F)::S(E)
- Tries
- Try
- B(J);XS(h)
- Threat
- DUALS(2)
- Vars
- P(g);XB(F)::S(E)
- B(b);::S(G)
- B(b);SBLOCK::S(E)
- Refutation
- B(b);
- Try
- R(C);
- Threat
- R(C)
- Vars
- P(g);XB(F)::S(E)
- B(b);SBLOCK::S(E)
- P(f);::R(C),XP(f)
- Refutation
- S(h);XB(F)
- Try
- R(C);CHECK
- Vars
- P(f);::R(C),XP(f)
- Refutation
- P(f);XR(C)
- Try
- R(H);XP(g)
- Threat
- DUALS(2)
- Vars
- R(c);::S(E)
- B(b);::S(E)
- B(b);N_GUARD::R1(H),XB(b)
- Refutation
- S(h);XB(F)
- Try
- Q(A);
- Threat
- QAR2(A)
- Vars
- P(d);N_SPINP(d),XQ(A)::S(G)
- P(g);XB(F)::S(E)
- B(b);SBLOCK::S(E)
- P(f);::QAR2(A),XP(f)
- Refutation
- S(h);XB(F)
- Try
- Q(A);N_PINP(d)
- Threat
- DUALS(2)
- Vars
- P(g);XB(F)::S(E)
- B(b);::S(G)
- B(b);SBLOCK::S(E)
- P(d);::S(G)
- Refutation
- S(h);XB(F)
- Try
- Q(A);N_PINP(d)
- Threat
- DUALS(3)
- Vars
- P(g);XB(F)::S(E)
- B(b);SBLOCK::S(E)
- P(d);::S(G)
- Refutation
- S(h);XB(F)
- Try
- Actual
- Q(A);N_PINP(d)
- Threat
- QAR2(A)
- Vars
- S(h);XB(F)::S(G)
- P(g);XB(F)::S(E)
- B(b);SBLOCK::S(E)
- P(d);::S(G)
- P(f);::QAR2(A),XP(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).