MESON Chess Problem Database
Problem Display
PID: 161307 (8/1Kn5/pp1P4/2P1R3/1QNkNr2/4R3/p2p4/b1nr4 w - - 0 1)
Apro, Laszlo
Schach-Echo, 1959
#2
8 + 10
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Bc3
- 2.Qxc3#
- 1...bxc5
- 2.Qxc5#
- 1...Bc3
- Tries
- 1.Sexd2?
- threat
- 2.Sb2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxb6#
- 1...bxc5
- 2.Qxc5#
- 1...Re4
- 2.Sf3#
- 1...Bb2
- 2.Sxb2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxb6#
- 2.Qxb2#
- 1...Bc3
- 2.Qxc3#
- 1...Sd3
- 2.Sb3#
- 1...a5
- 2.Sxa5#
- 1...b5
- 2.Sb2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Sd5!
- threat
- 1.Sf2?
- threat
- 2.Sb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxb6#
- 1...bxc5
- 2.Qxc5#
- 1...Re4
- 2.R3xe4#
- 1...Bb2
- 2.Sxb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxb6#
- 1...Bc3
- 2.Qxc3#
- 1...Sd3
- 2.Rxd3#
- 1...a5
- 2.Sxa5#
- 1...b5
- 2.Sb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Sd5!
- threat
- 1.Sg3?
- threat
- 2.Sb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxb6#
- 1...bxc5
- 2.Qxc5#
- 1...Re4
- 2.Sf5#
- 1...Bb2
- 2.Sxb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxb6#
- 1...Bc3
- 2.Qxc3#
- 1...Sd3
- 2.Se2#
- 1...a5
- 2.Sxa5#
- 1...b5
- 2.Sb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Sd5!
- threat
- 1.Sg5?
- threat
- 2.Sb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxb6#
- 1...bxc5
- 2.Qxc5#
- 1...Sd5
- 2.Se6#
- 1...Re4
- 2.Sf3#
- 1...Bb2
- 2.Sxb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxb6#
- 1...Bc3
- 2.Qxc3#
- 1...a5
- 2.Sxa5#
- 1...b5
- 2.Sb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Sd3!
- threat
- 1.Sf6?
- threat
- 2.Sb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxb6#
- 1...bxc5
- 2.Qxc5#
- 1...Sd5
- 2.Rxd5#
- 1...Re4
- 2.R5xe4#
- 1...Bb2
- 2.Sxb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxb6#
- 1...Bc3
- 2.Qxc3#
- 1...a5
- 2.Sxa5#
- 1...b5
- 2.Sb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- 1...Sd3!
- threat
- 1.Sexd2?
- Keys
- 1.Sc3!
- threat
- 2.Sb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxb6#
- 1...Bxc3
- 2.Qxc3#
- 1...bxc5
- 2.Qxc5#
- 1...Sd5
- 2.Rxd5#
- 1...Re4
- 2.R5xe4#
- 1...Bb2
- 2.Sxb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sxb6#
- 1...Sd3
- 2.Se2#
- 1...a5
- 2.Sxa5#
- 1...b5
- 2.Sb2#
- 2.Sxd2#
- 2.Sa3#
- 2.Sa5#
- 2.Sb6#
- threat
- 1.Sc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::QAB1(B),XB(a)
- P(i);OGATE,XP(E)::QAB1(B),XP(i)
- Tries
- Try
- S(D);XP(e)
- Threat
- DUALS(4)
- Vars
- P(i);OGATE,XP(E)::QAB1(B),XP(i)
- R(g);N_GUARD::S(D)
- B(a);N_GUARD::QAB1(B),XB(a)
- S(b);N_GUARD::S(D)
- P(h);::QAR(B)+S(C),XP(h)
- Refutation
- S(j);
- Try
- S(D);
- Threat
- DUALS(5)
- Vars
- P(i);OGATE,XP(E)::QAB1(B),XP(i)
- R(g);N_GUARD::R1(A),XR(g)
- B(a);N_GUARD::QAB1(B),XB(a)
- S(b);N_GUARD::R1(A),XS(b)
- P(h);::QAR(B)+S(C),XP(h)
- Refutation
- S(j);
- Try
- S(D);
- Threat
- DUALS(5)
- Vars
- P(i);OGATE,XP(E)::QAB1(B),XP(i)
- R(g);N_GUARD::S(D)
- B(a);N_GUARD::QAB1(B),XB(a)
- S(b);N_GUARD::S(D)
- P(h);::QAR(B)+S(C),XP(h)
- Refutation
- S(j);
- Try
- S(D);
- Threat
- DUALS(5)
- Vars
- P(i);OGATE,XP(E)::QAB1(B),XP(i)
- S(j);N_GUARD::S(D)
- R(g);N_GUARD::S(D)
- B(a);N_GUARD::QAB1(B),XB(a)
- P(h);::QAR(B)+S(C),XP(h)
- Refutation
- S(b);
- Try
- S(D);
- Threat
- DUALS(5)
- Vars
- P(i);OGATE,XP(E)::QAB1(B),XP(i)
- S(j);N_GUARD::R1(F),XS(j)
- R(g);N_GUARD::R1(F),XR(g)
- B(a);N_GUARD::QAB1(B),XB(a)
- P(h);::QAR(B)+S(C),XP(h)
- Refutation
- S(b);
- Try
- Actual
- S(D);
- Threat
- DUALS(5)
- Vars
- B(a);OGATE,XS(D)::QAB1(B),XB(a)
- P(i);OGATE,XP(E)::QAB1(B),XP(i)
- S(j);N_GUARD::R1(F),XS(j)
- R(g);N_GUARD::R1(F),XR(g)
- S(b);N_GUARD::S(D)
- P(h);::QAR(B)+S(C),XP(h)
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).