MESON Chess Problem Database
Problem Display
PID: 99275 (4R3/Qb6/3ppp2/1Rn1Pk1P/2N4K/1NPp2Pp/2nP2BP/8 w - - 0 1)
Loewenton, Leon
Magyar Sakkelet, 1954
#2
13 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bxg2
- 2.Qh7#
- 1...Bf3
- 2.Qh7#
- 1...Be4
- 2.Bxh3#
- 2.Qh7#
- 1...Bd5
- 2.Qh7#
- 1...Ba6
- 2.Qh7#
- 1...Bc6
- 2.Qh7#
- 1...Ba8
- 2.Qh7#
- 1...Bc8
- 2.Qh7#
- 1...Sa1
- 2.Sd4#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sxb3
- 2.Sxd6#
- 1...Sa4
- 2.Sxd6#
- 1...Se4
- 2.Bxh3#
- 1...Sa6
- 2.Sxd6#
- 1...Sd7
- 2.Sxd6#
- 1...dxe5
- 2.Sd6#
- 1...fxe5
- 2.Rf8#
- 1...Bxg2
- Tries
- 1.Bf3?
- 1...Bxf3
- 2.Qh7#
- 1...Sxb3
- 2.Sxd6#
- 1...dxe5
- 2.Sd6#
- 1...fxe5
- 2.Rf8#
- 1...Sa1
- 2.Sd4#
- 1...Be4
- 2.Bg4#
- 2.Qh7#
- 1...Bd5
- 2.Qh7#
- 1...Ba6
- 2.Qh7#
- 1...Bc6
- 2.Qh7#
- 1...Ba8
- 2.Qh7#
- 1...Bc8
- 2.Qh7#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sa4
- 2.Sxd6#
- 1...Se4
- 2.Bg4#
- 1...Sa6
- 2.Sxd6#
- 1...Sd7
- 2.Sxd6#
- 1...d5!
- 1...Bxf3
- 1.Rf8?
- threat
- 2.Rxf6#
- 1...Bxg2
- 2.Qh7#
- 1...dxe5
- 2.Sd6#
- 1...Bf3
- 2.Qh7#
- 1...Se4
- 2.Bxh3#
- 1...Sd7
- 2.Sxd6#
- 1...hxg2!
- threat
- 1.Qxb7?
- threat
- 2.Bxh3#
- 2.Qf3#
- 2.Qh7#
- 1...hxg2
- 2.Qf3#
- 2.Qh7#
- 1...fxe5
- 2.Rf8#
- 2.Qf3#
- 2.Qf7#
- 1...d5
- 2.Qh7#
- 1...Se1
- 2.Sd4#
- 2.Bxh3#
- 2.Qh7#
- 1...Se3
- 2.Sd4#
- 2.Qf3#
- 2.Qh7#
- 1...Sd4
- 2.Sxd4#
- 2.Bxh3#
- 2.Qh7#
- 1...Se4
- 2.Bxh3#
- 2.Bxe4#
- 2.Qxe4#
- 2.Qh7#
- 1...Sd7
- 2.Sxd6#
- 2.Bxh3#
- 2.Be4#
- 2.Qf3#
- 2.Qe4#
- 1...Sxb7!
- threat
- 1.Bf3?
- Keys
- 1.Bd5!
- 1...Bxd5
- 2.Qh7#
- 1...Sxb3
- 2.Qf2#
- 1...dxe5
- 2.Sd6#
- 1...exd5
- 2.Sxd6#
- 1...fxe5
- 2.Rf8#
- 1...Sa1
- 2.Sd4#
- 1...Ba6
- 2.Qh7#
- 1...Bc6
- 2.Qh7#
- 1...Ba8
- 2.Qh7#
- 1...Bc8
- 2.Qh7#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sa4
- 2.Qf2#
- 1...Se4
- 2.Bxe6#
- 1...Sa6
- 2.Qf2#
- 1...Sd7
- 2.Qf2#
- 1...Bxd5
- 1.Bd5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 5
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- B(i);OGATE,XB(B)::QAB(L)
- B(i);OGATE::QAB(L)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(d);XS(D)::S(G),XP(f)
- S(d);::S(G),XP(f)
- S(d);SBLOCK::B(B),XP(c)
- P(f);SBLOCK,XP(J)::S(G)
- P(h);OGATEB,XP(J)::R(M)
- Tries
- Try
- B(B);
- Vars
- B(i);OGATE,XB(B)::QAB(L)
- S(d);XS(D)::S(G),XP(f)
- P(f);SBLOCK,XP(J)::S(G)
- P(h);OGATEB,XP(J)::R(M)
- S(a);N_GUARD::S(D)
- B(i);OGATE::QAB(L)
- S(a);N_GUARD::S(D),XS(a)
- S(d);::S(G),XP(f)
- S(d);SBLOCK::B(B)
- Refutation
- P(f);
- Try
- R(M);P_PINP(h)
- Threat
- R1(M),XP(h)
- Vars
- B(i);OGATE,XB(B)::QAB(L)
- P(f);SBLOCK,XP(J)::S(G)
- B(i);OGATE::QAB(L)
- S(d);SBLOCK::B(B),XP(c)
- S(d);::S(G),XP(f)
- Refutation
- P(c);XB(B)
- Try
- Q(L);XB(i)
- Threat
- DUALS(3)
- Vars
- P(f);::QAB(L)
- Refutation
- S(d);XQ(L)
- Try
- Actual
- B(B);
- Vars
- B(i);OGATE,XB(B)::QAB(L)
- S(d);OGATE,XS(D)::QAR(L)
- P(f);SBLOCK,XP(J)::S(G)
- P(g);XB(B)::S(G),XP(f)
- P(h);OGATEB,XP(J)::R(M)
- S(a);N_GUARD::S(D)
- B(i);OGATE::QAB(L)
- S(a);N_GUARD::S(D),XS(a)
- S(d);OGATE::QAR(L)
- S(d);N_GUARD,SBLOCK::B(B),XP(g)
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).