MESON Chess Problem Database
Problem Display
PID: 178522 (3Nr3/8/N1p4Q/3k2PK/1rnn1BRR/3BP3/7P/8 w - - 0 1)
Apro, Laszlo
Bulletin Ouvrier des Echecs, 1952
#2
11 + 6
SOLUTION
- SOUND
- Sets
- 1...Rxd8
- 2.e4#
- 1...Rf8
- 2.e4#
- 1...Rg8
- 2.e4#
- 1...Rh8
- 2.e4#
- 1...Sb2
- 2.Qd6#
- 1...Sd2
- 2.Qd6#
- 1...Sa3
- 2.Qd6#
- 1...Sxe3
- 2.Qd6#
- 1...Sa5
- 2.Qd6#
- 1...Se5
- 2.e4#
- 1...Sb6
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sc2
- 2.Qxc6#
- 1...Se2
- 2.Qxc6#
- 1...Sb3
- 2.Qxc6#
- 1...Sf3
- 2.Qxc6#
- 1...Sb5
- 2.Qxc6#
- 1...Sf5
- 2.Qxc6#
- 1...c5
- 2.Sc7#
- 1...Rxd8
- Tries
- 1.Sb7?
- threat
- 2.Sxb4#
- 2.Sc7#
- 1...Rb1
- 2.Sc7#
- 1...Rb2
- 2.Sc7#
- 1...Rb3
- 2.Sc7#
- 1...Ra4
- 2.Sc7#
- 1...Rb5
- 2.Sc7#
- 1...Rb6
- 2.Sc7#
- 1...Re7
- 2.Sxb4#
- 1...Rc8
- 2.Sxb4#
- 2.e4#
- 1...Sc2
- 2.Sc7#
- 1...Sb5
- 2.Sxb4#
- 1...Se6
- 2.Sxb4#
- 1...c5
- 2.Sc7#
- 1...Rxb7!
- threat
- 1.Bc7?
- threat
- 2.Rxd4#
- 1...Sxe3
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Re4
- 2.Bxe4#
- 1...Sb2
- 2.Qd6#
- 1...Sd2
- 2.Qd6#
- 1...Sa3
- 2.Qd6#
- 1...Sa5
- 2.Qd6#
- 1...Se5
- 2.Qd6#
- 2.e4#
- 1...Sb6
- 2.Qd6#
- 1...Sc2
- 2.Qxc6#
- 1...Se2
- 2.Qxc6#
- 1...Sb3
- 2.Qxc6#
- 1...Sf3
- 2.Qxc6#
- 1...Sb5
- 2.Qxc6#
- 1...Sf5
- 2.Qxc6#
- 1...Se6
- 2.Be4#
- 1...c5!
- threat
- 1.Qf8?
- threat
- 2.Sxb4#
- 2.Sc7#
- 2.Qc5#
- 1...Rxd8
- 2.Sc7#
- 1...Rxf8
- 2.e4#
- 1...Rb1
- 2.Sc7#
- 2.Qc5#
- 1...Rb2
- 2.Sc7#
- 2.Qc5#
- 1...Rb3
- 2.Sc7#
- 2.Qc5#
- 1...Ra4
- 2.Sc7#
- 2.Qc5#
- 1...Rb5
- 2.Sc7#
- 1...Rb6
- 2.Sc7#
- 2.Qc5#
- 1...Rb7
- 2.Qc5#
- 1...Rb8
- 2.Sc7#
- 2.Qc5#
- 1...Sd6
- 2.Qxd6#
- 1...Sc2
- 2.Sc7#
- 2.Qc5#
- 1...Sb3
- 2.Sxb4#
- 2.Sc7#
- 1...Sb5
- 2.Sxb4#
- 2.Qc5#
- 1...Se6
- 2.Sxb4#
- 1...c5
- 2.Sc7#
- 2.Qxc5#
- 1...Re7!
- threat
- 1.Sb7?
- Keys
- 1.Bg3!
- threat
- 2.Rxd4#
- 1...Sxe3
- 2.Qd6#
- 1...Re4
- 2.Bxe4#
- 1...Sb2
- 2.Qd6#
- 1...Sd2
- 2.Qd6#
- 1...Sa3
- 2.Qd6#
- 1...Sa5
- 2.Qd6#
- 1...Se5
- 2.e4#
- 1...Sb6
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sc2
- 2.Qxc6#
- 1...Se2
- 2.Qxc6#
- 1...Sb3
- 2.Qxc6#
- 1...Sf3
- 2.Qxc6#
- 1...Sb5
- 2.Qxc6#
- 1...Sf5
- 2.Qxc6#
- 1...Se6
- 2.Be4#
- 1...c5
- 2.Sc7#
- threat
- 1.Bg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- R(f);N_GUARD,XS(K)::P(C)
- R(f);N_GUARD::P(C)
- R(f);N_GUARD,P_PINQ(J)::P(C)
- S(b);N_GUARD::QAR1(J)
- S(b);N_GUARD,XP(C)::QAR1(J)
- S(b);S_CUTR(f)::P(C)
- S(b);N_GUARD::QAR1(J),XS(b)
- S(c);N_GUARD::QAB1(J),XP(e)
- P(e);SBLOCK::S(I)
- Tries
- Try
- S(K);
- Threat
- DUALS(2)
- Vars
- R(a);::S(I)
- R(f);::S(I),XR(a)
- S(c);::S(I)
- S(c);::S(I),XR(a)
- P(e);::S(I)
- Refutation
- R(a);XS(K)
- Try
- B(D);
- Threat
- R1(E),XS(c)
- Vars
- S(b);N_GUARD,XP(C)::QAR1(J)
- S(b);N_GUARD::QAR1(J),XS(b)
- R(f);N_GUARD::B(B),XR(f)
- S(b);N_GUARD::QAR1(J)
- S(c);N_GUARD::QAB1(J),XP(e)
- S(c);S_CUTR(f)::B(B)
- Refutation
- P(e);
- Try
- Q(J);
- Threat
- DUALS(3)
- Vars
- R(f);XS(K)::S(I)
- R(f);N_GUARD,XQ(J)::P(C)
- R(a);::S(I)
- R(a);::QAR1(J)
- S(b);N_GUARD::QAR1(J),XS(b)
- S(c);::S(I),XR(a)
- Refutation
- R(f);
- Try
- Actual
- B(D);
- Threat
- R1(E),XS(c)
- Vars
- S(b);N_GUARD,XP(C)::QAR1(J)
- R(f);N_GUARD::B(B),XR(f)
- S(b);N_GUARD::QAR1(J)
- S(b);S_CUTR(f)::P(C)
- S(b);N_GUARD::QAR1(J),XS(b)
- S(c);N_GUARD::QAB1(J),XP(e)
- S(c);S_CUTR(f)::B(B)
- P(e);SBLOCK::S(I)
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).