MESON Chess Problem Database
Problem Display
PID: 235576 (5r2/3N1p2/8/4NBp1/1n1p1kP1/p3pP2/Q6P/1K3R2 w - - 0 1)
Hoffmann, Fritz
Shakhmaty v SSSR, 1969
#2
9 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sxa2
- 2.Sd3#
- 1...Sc2
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sd5
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sc6
- 2.Sd3#
- 1...e2
- 2.Qd2#
- 1...d3
- 2.Qc4#
- 1...f6
- 2.Sg6#
- 1...Sxa2
- Tries
- 1.Bc2?
- 1...Sxa2
- 2.Sd3#
- 1...Sxc2
- 2.Sd3#
- 1...Ra8
- 2.Qxf7#
- 1...Rb8
- 2.Qxf7#
- 1...Rc8
- 2.Qxf7#
- 1...Rd8
- 2.Qxf7#
- 1...Re8
- 2.Qxf7#
- 1...Rg8
- 2.Qxf7#
- 1...Rh8
- 2.Qxf7#
- 1...Sd3
- 2.Sxd3#
- 1...Sd5
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sc6
- 2.Sd3#
- 1...d3
- 2.Qc4#
- 1...f5
- 2.Sg6#
- 1...f6
- 2.Sg6#
- 1...e2!
- 1...Sxa2
- 1.Be4?
- 1...Sxa2
- 2.Sd3#
- 1...e2
- 2.Qd2#
- 1...Ra8
- 2.Qxf7#
- 1...Rb8
- 2.Qxf7#
- 1...Rc8
- 2.Qxf7#
- 1...Rd8
- 2.Qxf7#
- 1...Re8
- 2.Qxf7#
- 1...Rg8
- 2.Qxf7#
- 1...Rh8
- 2.Qxf7#
- 1...Sc2
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sd5
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sc6
- 2.Sd3#
- 1...f5
- 2.Sg6#
- 1...f6
- 2.Sg6#
- 1...d3!
- 1...Sxa2
- 1.Qc4?
- threat
- 2.Qxd4#
- 1...Sc2
- 2.Sd3#
- 1...Sc6
- 2.Sd3#
- 1...a2+!
- threat
- 1.Qd5?
- threat
- 2.Qe4#
- 2.Qxd4#
- 1...Sxd5
- 2.Sd3#
- 1...Sc2
- 2.Sd3#
- 2.Qe4#
- 1...Sc6
- 2.Sd3#
- 2.Qe4#
- 1...d3
- 2.Qc4#
- 2.Qe4#
- 2.Qd4#
- 1...a2+!
- threat
- 1.Qa1?
- threat
- 2.Qxd4#
- 1...Sc2
- 2.Sd3#
- 1...Sc6
- 2.Sd3#
- 1...d3
- 2.Qd4#
- 1...a2+!
- threat
- 1.Qc2?
- threat
- 2.Qe4#
- 1...Sxc2
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...d3
- 2.Qc4#
- 1...a2+!
- threat
- 1.Bc2?
- Keys
- 1.Bh7!
- 1...Sxa2
- 2.Sd3#
- 1...e2
- 2.Qd2#
- 1...Ra8
- 2.Qxf7#
- 1...Rb8
- 2.Qxf7#
- 1...Rc8
- 2.Qxf7#
- 1...Rd8
- 2.Qxf7#
- 1...Re8
- 2.Qxf7#
- 1...Rg8
- 2.Qxf7#
- 1...Rh8
- 2.Qxf7#
- 1...Sc2
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sd5
- 2.Sd3#
- 1...Sa6
- 2.Sd3#
- 1...Sc6
- 2.Sd3#
- 1...d3
- 2.Qc4#
- 1...f5
- 2.Sg6#
- 1...f6
- 2.Sg6#
- 1...Sxa2
- 1.Bh7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- S(c);N_GUARD,XQ(C)::S(G)
- S(c);N_GUARD::S(G)
- S(c);N_GUARD::S(G),XS(c)
- P(b);OGATEB::QAB(C)
- P(d);OGATEB::QAR(C)
- P(g);N_GUARD::S(G)
- Tries
- Try
- B(H);
- Vars
- S(c);N_GUARD,XQ(C)::S(G)
- S(c);N_GUARD,XB(H)::S(G)
- R(h);N_GUARD::QAR(C),XP(g)
- S(c);N_GUARD::S(G),XS(c)
- S(c);N_GUARD::S(G)
- P(d);OGATEB::QAR(C)
- P(g);N_GUARD::S(G)
- Refutation
- P(b);
- Try
- B(H);
- Vars
- S(c);N_GUARD,XQ(C)::S(G)
- P(b);OGATEB::QAB(C)
- R(h);N_GUARD::QAR(C),XP(g)
- S(c);N_GUARD::S(G)
- S(c);N_GUARD::S(G),XS(c)
- P(g);N_GUARD::S(G)
- Refutation
- P(d);
- Try
- Q(C);P_PINP(d)
- Threat
- QAR2(C),XP(d)
- Vars
- S(c);N_GUARD::S(G)
- Refutation
- P(a);CHECK
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD,XQ(C)::S(G)
- Refutation
- P(a);CHECK
- Try
- Q(C);
- Threat
- QAR2(C),XP(d)
- Vars
- S(c);N_GUARD::S(G)
- P(d);::QAR2(C)
- Refutation
- P(a);CHECK
- Try
- Q(C);
- Threat
- QAR1(C)
- Vars
- S(c);N_GUARD,XQ(C)::S(G)
- S(c);N_GUARD::S(G),XS(c)
- P(d);OGATEB::QAR(C)
- Refutation
- P(a);CHECK
- Try
- Actual
- B(H);
- Vars
- S(c);N_GUARD,XQ(C)::S(G)
- P(b);OGATEB::QAB(C)
- R(h);N_GUARD::QAR(C),XP(g)
- S(c);N_GUARD::S(G)
- S(c);N_GUARD::S(G),XS(c)
- P(d);OGATEB::QAR(C)
- P(g);N_GUARD::S(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).