MESON Chess Problem Database
Problem Display
PID: 179809 (8/6Bp/6R1/1q5k/p1P4P/1p1QP2p/1P4N1/K2b3n w - - 0 1)
Zalkind, Lazar Borissovich
Deutsche Schachzeitung, 1907
#2
9 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qxc4
- 2.Rg5#
- 2.Qf5#
- 1...Qa6
- 2.Rg5#
- 2.Qf5#
- 1...Qc6
- 2.Rg5#
- 2.Qf5#
- 1...Qd7
- 2.Rg5#
- 1...Qe8
- 2.Rg5#
- 2.Qf5#
- 1...Qb4
- 2.Rg5#
- 2.Qf5#
- 1...Qf5
- 2.Qxf5#
- 1...Qg5
- 2.Rxg5#
- 1...Qb6
- 2.Rg5#
- 2.Qf5#
- 1...Qb7
- 2.Rg5#
- 2.Qf5#
- 1...Qb8
- 2.Rg5#
- 2.Qf5#
- 1...Bg4
- 2.Rh6#
- 1...hxg6
- 2.Qxd1#
- 1...Qxc4
- Tries
- 1.Rg3?
- threat
- 2.Qxh7#
- 2.Qxd1#
- 1...Qxc4
- 2.Rg5#
- 2.Qf5#
- 2.Qxh7#
- 1...hxg2
- 2.Qxh7#
- 1...Qa6
- 2.Rg5#
- 2.Qf5#
- 2.Qxd1#
- 2.Qd5#
- 1...Qc6
- 2.Rg5#
- 2.Qf5#
- 1...Qd7
- 2.Rg5#
- 2.Qxh7#
- 1...Qd5
- 2.Qxh7#
- 2.Qxd5#
- 1...Qf5
- 2.Qxf5#
- 1...Qg5
- 2.Rxg5#
- 1...Qb6
- 2.Rg5#
- 2.Qf5#
- 2.Qxd1#
- 2.Qd5#
- 1...Qb7
- 2.Rg5#
- 2.Qf5#
- 2.Qxh7#
- 1...Bc2
- 2.Qe2#
- 1...Be2
- 2.Qxe2#
- 2.Qxh7#
- 1...Bf3
- 2.Qxh7#
- 1...Bg4
- 2.Qxh7#
- 1...Sf2
- 2.Qxh7#
- 1...h6
- 2.Qg6#
- 2.Qxd1#
- 1...Sxg3!
- threat
- 1.Qe4?
- threat
- 2.Rh6#
- 1...Qa6
- 2.Rg5#
- 2.Qf5#
- 1...Qc6
- 2.Rg5#
- 2.Qf5#
- 1...Qg5
- 2.Rxg5#
- 1...Qb6
- 2.Rg5#
- 2.Qf5#
- 1...h6
- 2.Rxh6#
- 1...hxg6!
- threat
- 1.Qd4?
- threat
- 2.Rh6#
- 1...hxg6
- 2.Qxd1#
- 1...Qa6
- 2.Rg5#
- 1...Qc6
- 2.Rg5#
- 1...Qg5
- 2.Rxg5#
- 1...Qb6
- 2.Rg5#
- 1...h6
- 2.Rxh6#
- 1...Kxg6!
- threat
- 1.cxb5?
- threat
- 2.Rg5#
- 2.Qf5#
- 1...hxg6
- 2.Qxd1#
- 1...Bc2
- 2.Rg5#
- 1...Bg4
- 2.Rg5#
- 2.Rh6#
- 1...Sg3
- 2.Rg5#
- 1...h6
- 2.Qf5#
- 1...hxg2!
- threat
- 1.Rg3?
- Keys
- 1.Qd7!
- threat
- 2.Rh6#
- 1...Kxg6
- 2.Sf4#
- 1...Qxd7
- 2.Rg5#
- 1...hxg6
- 2.Qxd1#
- 1...Qa6
- 2.Rg5#
- 2.Qf5#
- 1...Qc6
- 2.Rg5#
- 2.Qf5#
- 1...Qf5
- 2.Qxf5#
- 1...Qg5
- 2.Rxg5#
- 1...Qb6
- 2.Rg5#
- 2.Qf5#
- 1...h6
- 2.Rxh6#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- Q(f);N_GUARD::R1(H)
- Q(f);N_GUARD::QAR2(D),XQ(f)
- Q(f);N_GUARD::R1(H),XQ(f)
- B(a);SBLOCK::R1(H)
- P(h);SBLOCK,XR(H)::QAB(D),XB(a)
- Tries
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- P(d);XS(C)::QAR2(D),XP(h)
- Q(f);N_GUARD::QAR2(D),XQ(f)
- Q(f);N_GUARD::R1(H),XQ(f)
- B(a);N_GUARD::QAB(D)
- B(a);::QAR2(D),XP(h)
- S(b);::QAR2(D),XP(h)
- Refutation
- S(b);XR(H)
- Try
- Q(D);
- Threat
- R1(H)
- Vars
- Q(f);N_GUARD::R1(H),XQ(f)
- P(h);::R1(H),XP(h)
- Refutation
- P(h);XR(H)
- Try
- Q(D);
- Threat
- R1(H)
- Vars
- P(h);SBLOCK,XR(H)::QAB(D),XB(a)
- Q(f);N_GUARD,SBLOCK::R1(H)
- Q(f);N_GUARD::R1(H)
- Q(f);N_GUARD::R1(H),XQ(f)
- P(h);::R1(H),XP(h)
- Refutation
- K(g);S_FLIGHT,XR(H)
- Try
- P(F);XQ(f)
- Threat
- DUALS(2)
- Vars
- P(h);SBLOCK,XR(H)::QAB(D),XB(a)
- B(a);::R1(H)
- S(b);::R1(H)
- P(h);::QAR2(D)
- Refutation
- P(d);XS(C)
- Try
- Actual
- Q(D);
- Threat
- R1(H)
- Vars
- K(g);S_FLIGHT,XR(H)::S(C)
- Q(f);N_GUARD,XQ(D)::R1(H)
- P(h);SBLOCK,XR(H)::QAB(D),XB(a)
- Q(f);N_GUARD::QAR2(D),XQ(f)
- Q(f);N_GUARD::R1(H),XQ(f)
- P(h);::R1(H),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).