MESON Chess Problem Database
Problem Display
PID: 232630 (2B4K/2p1N1n1/1Q1P3R/3Pk3/4n2R/p3Np2/7b/2r5 w - - 0 1)
Hoffmann, Fritz
Freie Presse, 1970
#2
9 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sc4#
- 2.Sc6#
- 1...Rb1
- 2.Sc4#
- 2.Sc6#
- 1...Rd1
- 2.Sc4#
- 2.Sc6#
- 1...Re1
- 2.Sc4#
- 2.Sc6#
- 1...Rf1
- 2.Sc4#
- 2.Sc6#
- 1...Rg1
- 2.Sc4#
- 2.Sc6#
- 1...Rh1
- 2.Sc4#
- 2.Sc6#
- 1...Rc4
- 2.Sxc4#
- 1...Rc6
- 2.Sxc6#
- 1...Bf4
- 2.Sg4#
- 1...Sd2
- 2.Qd4#
- 1...Sf2
- 2.Qd4#
- 1...Sc3
- 2.Sc4#
- 2.Sc6#
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sc5
- 2.Sc6#
- 1...Sg5
- 2.Qd4#
- 1...Sxd6
- 2.Qd4#
- 1...Sf6
- 2.Sg6#
- 1...Sf5
- 2.Re6#
- 1...Sh5
- 2.Re6#
- 1...Se6
- 2.Rxe6#
- 1...Se8
- 2.Re6#
- 1...c5
- 2.Sc6#
- 1...Ra1
- Tries
- 1.Qc5?
- threat
- 2.Sc6#
- 1...c6
- 2.Sxc6#
- 1...Rxc5!
- threat
- 1.Qb2+?
- 1...Rc3
- 2.Sc6#
- 1...Sc3
- 2.Sc4#
- 2.Sc6#
- 2.Qxh2#
- 1...axb2!
- 1...Rc3
- 1.Qb4?
- threat
- 2.Rxe4#
- 2.Qxe4#
- 1...Sxd6
- 2.Sg4#
- 2.Qd4#
- 1...Bf4
- 2.Sg4#
- 1...Sd2
- 2.Sg4#
- 2.Qd4#
- 1...Sf2
- 2.Qd4#
- 1...Sc3
- 2.Sc4#
- 2.Sg4#
- 2.Sc6#
- 2.Qd4#
- 1...Sg3
- 2.Sg4#
- 2.Qd4#
- 2.Qf4#
- 1...Sc5
- 2.Sg4#
- 2.Sc6#
- 2.Qd4#
- 1...Sg5
- 2.Sg4#
- 2.Qd4#
- 1...Sf6
- 2.Sg6#
- 1...Se6
- 2.Rxe4#
- 2.Rxe6#
- 1...Rc4!
- threat
- 1.dxc7?
- threat
- 2.Sg6#
- 1...Rg1
- 2.Sc4#
- 2.Sc6#
- 1...Rc6
- 2.Sxc6#
- 1...Sd6
- 2.Qd4#
- 2.Qxd6#
- 1...Se6
- 2.Rxe6#
- 1...Rc5!
- threat
- 1.Qc5?
- Keys
- 1.Bf5!
- threat
- 2.Rxe4#
- 1...Sxd6
- 2.Qd4#
- 1...Sxf5
- 2.Re6#
- 1...Rc4
- 2.Sxc4#
- 1...Bf4
- 2.Sg4#
- 1...Sd2
- 2.Qd4#
- 1...Sf2
- 2.Qd4#
- 1...Sc3
- 2.Sc4#
- 2.Sc6#
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sc5
- 2.Sc6#
- 1...Sg5
- 2.Qd4#
- 1...Sf6
- 2.Sg6#
- threat
- 1.Bf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- R(a);N_GUARD::S(A),XR(a)
- R(a);N_GUARD::S(G),XR(a)
- B(b);SBLOCK::S(A)
- S(e);::QAB1(D)
- S(e);S_CUTR(a)::S(G)
- S(e);XP(E)::QAB1(D)
- S(e);SBLOCK::S(G)
- S(h);N_GUARD::R1(F)
- S(h);N_GUARD::R1(F),XS(h)
- P(g);S_CUTR(a)::S(G)
- Tries
- Try
- Q(D);
- Threat
- S(G)
- Vars
- P(g);::S(G),XP(g)
- Refutation
- R(a);XQ(D)
- Try
- Q(D);CHECK
- Vars
- R(a);P_SPINR(a)::S(G)
- Refutation
- P(c);XQ(D)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- B(b);SBLOCK::S(A)
- S(e);::QAB1(D)
- S(e);SBLOCK::S(G)
- Refutation
- R(a);
- Try
- P(E);XP(g)
- Threat
- S(G)
- Vars
- R(a);N_GUARD::S(G),XR(a)
- S(h);N_GUARD::R1(F),XS(h)
- Refutation
- R(a);
- Try
- Actual
- B(H);
- Threat
- R1(B),XS(e)
- Vars
- S(e);XP(E)::QAB1(D)
- S(h);N_GUARD,XB(H)::R1(F)
- R(a);N_GUARD::S(A),XR(a)
- B(b);SBLOCK::S(A)
- S(e);::QAB1(D)
- S(e);S_CUTR(a)::S(G)
- S(e);SBLOCK::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).