MESON Chess Problem Database
Problem Display
PID: 232694 (nQ3KR1/3B4/2pN1k1r/bb2N2p/8/q2n2B1/8/8 w - - 0 1)
Frohlich, Georg
Freie Presse, 1968
#2
7 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Se4#
- 2.Se8#
- 1...Qb2
- 2.Se4#
- 2.Se8#
- 1...Qxd6+
- 2.Qxd6#
- 1...Qa1
- 2.Se4#
- 2.Se8#
- 1...Qa2
- 2.Se4#
- 2.Se8#
- 1...Qb3
- 2.Se4#
- 2.Se8#
- 1...Qc3
- 2.Se4#
- 2.Se8#
- 1...Qa4
- 2.Se8#
- 1...Rg6
- 2.Rxg6#
- 1...Rh7
- 2.Rg6#
- 1...Be1
- 2.Qd8#
- 1...Bd2
- 2.Qd8#
- 1...Bc3
- 2.Qd8#
- 1...Bb4
- 2.Qd8#
- 1...Bd8
- 2.Qxd8#
- 1...Sb4
- 2.Se4#
- 2.Se8#
- 1...Sc5
- 2.Se8#
- 1...Sxe5
- 2.Bh4#
- 1...Sb6
- 2.Qd8#
- 1...Sc7
- 2.Qd8#
- 1...h4
- 2.Sg4#
- 1...c5
- 2.Se4#
- 2.Se8#
- 1...Qc1
- Tries
- 1.Bg4?
- threat
- 2.Sd7#
- 1...Qxd6+
- 2.Qxd6#
- 1...Sxe5
- 2.Bh4#
- 1...Rg6
- 2.Rxg6#
- 1...Rh7
- 2.Rg6#
- 1...Sc5
- 2.Se8#
- 1...Sb6
- 2.Qd8#
- 1...c5
- 2.Se4#
- 1...hxg4!
- threat
- 1.Qe8?
- threat
- 2.Bh4#
- 2.Qf7#
- 2.Qe6#
- 2.Qe7#
- 1...Sxe5
- 2.Bh4#
- 2.Bxe5#
- 2.Qxe5#
- 2.Qe6#
- 2.Qe7#
- 1...Rg6
- 2.Rxg6#
- 2.Qxg6#
- 2.Qe7#
- 1...Qb4
- 2.Qf7#
- 2.Qe6#
- 2.Qe7#
- 1...Qc1
- 2.Se4#
- 2.Qf7#
- 2.Qe6#
- 2.Qe7#
- 1...Qa2
- 2.Se4#
- 2.Bh4#
- 2.Qe7#
- 1...Qb3
- 2.Se4#
- 2.Bh4#
- 2.Qe7#
- 1...Qa4
- 2.Qf7#
- 2.Qe6#
- 2.Qe7#
- 1...Rh7
- 2.Bh4#
- 2.Rg6#
- 2.Qg6#
- 2.Qe6#
- 1...Be1
- 2.Qf7#
- 2.Qe6#
- 2.Qe7#
- 2.Qd8#
- 1...Bd2
- 2.Qf7#
- 2.Qe6#
- 2.Qe7#
- 2.Qd8#
- 1...Bd8
- 2.Bh4#
- 2.Qf7#
- 2.Qe6#
- 2.Qxd8#
- 1...Bc4
- 2.Bh4#
- 2.Qe7#
- 1...Sf4
- 2.Bh4#
- 2.Qe7#
- 1...Sc5
- 2.Bh4#
- 2.Qf7#
- 2.Qe7#
- 1...Sc7
- 2.Bh4#
- 2.Qf7#
- 2.Qe7#
- 2.Qd8#
- 1...h4
- 2.Sg4#
- 2.Qf7#
- 2.Qe6#
- 2.Qe7#
- 1...Qxd6+!
- threat
- 1.Bg4?
- Keys
- 1.Bh3!
- threat
- 2.Sd7#
- 1...Qxd6+
- 2.Qxd6#
- 1...Sxe5
- 2.Bh4#
- 1...Rg6
- 2.Rxg6#
- 1...Rh7
- 2.Rg6#
- 1...Sc5
- 2.Se8#
- 1...Sb6
- 2.Qd8#
- 1...c5
- 2.Se4#
- threat
- 1.Bh3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- Q(a);CHECK,OGATE,XS(C)::QAR2(E),XQ(a)
- Q(a);N_PINS(C)::S(C)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);N_GUARD::R1(G)
- B(c);N_GUARD::QAB(E)
- B(c);N_GUARD::QAB(E),XB(c)
- S(b);N_PINS(C)::S(C)
- S(b);SBLOCK,XS(B)::B(A)
- S(i);S_CUTB(c)::QAB(E)
- P(e);N_GUARD::S(B)
- Tries
- Try
- B(D);
- Threat
- S(B)
- Vars
- Q(a);CHECK,OGATE,XS(C)::QAR2(E),XQ(a)
- S(b);SBLOCK,XS(B)::B(A)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);N_GUARD::R1(G)
- S(b);N_PINS(C)::S(C)
- S(i);S_CUTB(c)::QAB(E)
- P(f);N_PINS(C)::S(C)
- Refutation
- P(e);XB(D)
- Try
- Q(E);
- Threat
- DUALS(4)
- Refutation
- Q(a);CHECK,XS(C)
- Try
- Actual
- B(D);
- Threat
- S(B)
- Vars
- Q(a);CHECK,OGATE,XS(C)::QAR2(E),XQ(a)
- S(b);SBLOCK,XS(B)::B(A)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);N_GUARD::R1(G)
- S(b);N_PINS(C)::S(C)
- S(i);S_CUTB(c)::QAB(E)
- P(f);N_PINS(C)::S(C)
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).