MESON Chess Problem Database
Problem Display
PID: 232614 (8/4p1K1/8/1R2p3/3kp1Q1/q2Nn3/N3B2p/2R3B1 w - - 0 1)
Hoffmann, Fritz
Freie Presse, 1967
#2
8 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Qd7#
- 1...Qxd3
- 2.Qd7#
- 1...Qa4
- 2.Qd7#
- 1...Qa5
- 2.Qd7#
- 1...Qb2
- Tries
- 1.Se1?
- threat
- 2.Sc2#
- 2.Sf3#
- 2.Rc4#
- 1...Qxc1
- 2.Sf3#
- 2.Qd7#
- 1...Qxa2
- 2.Sf3#
- 1...hxg1Q
- 2.Sf3#
- 1...hxg1B
- 2.Sf3#
- 1...hxg1R
- 2.Sf3#
- 1...Qc5
- 2.Rd1#
- 1...h1Q
- 2.Sc2#
- 2.Rc4#
- 1...h1B
- 2.Sc2#
- 2.Rc4#
- 1...Qb2
- 2.Sf3#
- 2.Rc4#
- 2.Qd7#
- 1...Qb4
- 2.Sc2#
- 2.Sf3#
- 1...Qb3
- 2.Sf3#
- 1...Qc3
- 2.Sf3#
- 2.Qd7#
- 1...Qd3
- 2.Sf3#
- 2.Qd7#
- 1...Qa4
- 2.Sf3#
- 2.Qd7#
- 1...hxg1S!
- threat
- 1.Sdb4?
- threat
- 2.Sc2#
- 2.Sc6#
- 2.Rc4#
- 2.Rd5#
- 2.Qd7#
- 1...Qxc1
- 2.Rd5#
- 2.Qd7#
- 1...Qxa2
- 2.Sc6#
- 1...hxg1Q
- 2.Sc6#
- 1...hxg1S
- 2.Sc6#
- 1...hxg1B
- 2.Sc6#
- 1...hxg1R
- 2.Sc6#
- 1...Qb2
- 2.Sc6#
- 2.Rc4#
- 2.Rd5#
- 2.Qd7#
- 1...Qb3
- 2.Sc6#
- 1...Qc3
- 2.Rd5#
- 2.Qd7#
- 1...Qd3
- 2.Sc6#
- 2.Rd5#
- 2.Qd7#
- 1...Qa4
- 2.Sc6#
- 2.Rc4#
- 2.Rd5#
- 2.Qd7#
- 1...Qa5
- 2.Sc2#
- 2.Sc6#
- 2.Rd1#
- 2.Rc4#
- 2.Qd7#
- 1...Qa6
- 2.Sc2#
- 2.Rd1#
- 2.Rc4#
- 2.Rd5#
- 1...Qa7
- 2.Sc2#
- 2.Sc6#
- 2.Rd1#
- 2.Rc4#
- 2.Rd5#
- 1...Qa8
- 2.Sc2#
- 2.Rd1#
- 2.Rc4#
- 1...e6
- 2.Sc2#
- 2.Sc6#
- 2.Rc4#
- 1...Qxb4!
- threat
- 1.Sxe5?
- threat
- 2.Sf3#
- 2.Sc6#
- 2.Rc4#
- 1...Qxc1
- 2.Sf3#
- 2.Qd7#
- 1...Qxa2
- 2.Sf3#
- 2.Sc6#
- 1...hxg1Q
- 2.Sf3#
- 2.Sc6#
- 1...hxg1S
- 2.Sc6#
- 1...hxg1B
- 2.Sf3#
- 2.Sc6#
- 1...hxg1R
- 2.Sf3#
- 2.Sc6#
- 1...h1Q
- 2.Sc6#
- 2.Rc4#
- 1...h1B
- 2.Sc6#
- 2.Rc4#
- 1...Qb4
- 2.Sf3#
- 2.Sc6#
- 1...Qd6
- 2.Sf3#
- 2.Rd1#
- 2.Rc4#
- 1...Qb3
- 2.Sf3#
- 2.Sc6#
- 1...Qc3
- 2.Sf3#
- 2.Qd7#
- 1...Qd3
- 2.Sf3#
- 2.Sc6#
- 2.Qd7#
- 1...Qa4
- 2.Sf3#
- 2.Sc6#
- 2.Qd7#
- 1...Qa6
- 2.Sf3#
- 2.Rd1#
- 2.Rc4#
- 1...Qa8
- 2.Sf3#
- 2.Rd1#
- 2.Rc4#
- 1...Qc5!
- threat
- 1.Rb4+?
- 1...Kd5
- 2.Qd7#
- 1...Qxb4!
- 1...Kd5
- 1.Se1?
- Keys
- 1.Sc5!
- threat
- 2.Se6#
- 2.Qd7#
- 2.Qxe4#
- 1...Kd5
- 2.Qd7#
- 1...Qxc5
- 2.Rd1#
- 1...Qxa2
- 2.Qxe4#
- 1...hxg1Q
- 2.Se6#
- 1...hxg1S
- 2.Se6#
- 2.Qxe4#
- 1...hxg1B
- 2.Se6#
- 2.Qxe4#
- 1...hxg1R
- 2.Se6#
- 1...h1Q
- 2.Se6#
- 2.Qd7#
- 1...h1B
- 2.Se6#
- 2.Qd7#
- 1...Qb3
- 2.Sxb3#
- 2.Qxe4#
- 1...Qd3
- 2.Se6#
- 2.Qd7#
- 1...Qa6
- 2.Sb3#
- 2.Rd1#
- 2.Qxe4#
- 1...Qa7
- 2.Sb3#
- 2.Se6#
- 2.Rd1#
- 2.Qxe4#
- 1...Qa8
- 2.Sb3#
- 2.Se6#
- 2.Rd1#
- 1...e6
- 2.Sxe6#
- 2.Qxe4#
- threat
- 1.Sc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 4
- Sets
- Q(b);N_GUARD::QAR(F)
- Q(b);N_GUARD,XS(E)::QAR(F)
- Tries
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(b);XS(C)::S(E)
- P(a);N_SPINS(c),P_PINQ(F),XB(B)::S(E)
- P(a);N_SPINS(c),XB(B)::S(E)
- Q(b);N_GUARD::R(A)
- Q(b);::S(E)
- Refutation
- P(a);N_SPINS(c),XB(B)
- Try
- S(E);
- Threat
- DUALS(5)
- Vars
- Q(b);XS(C)::S(E)
- P(a);N_SPINS(c),P_PINQ(F),XB(B)::S(E)
- P(a);N_SPINS(c),XB(B)::S(E)
- Q(b);::S(E)
- Refutation
- Q(b);XS(E)
- Try
- S(E);XP(f)
- Threat
- DUALS(3)
- Vars
- P(a);N_SPINS(c),XB(B)::S(E)
- Refutation
- Q(b);
- Try
- R(G);CHECK
- Vars
- K(d);N_SPINP(e),N_SPINS(c),P-FLIGHT::QAR2(F)
- Refutation
- Q(b);XR(G)
- Try
- Actual
- S(E);
- Threat
- DUALS(3)
- Vars
- K(d);N_SPINP(e),N_SPINS(c),P-FLIGHT::QAR2(F)
- Q(b);N_GUARD,XS(E)::R(A)
- Q(b);XS(C)::QAR1(F),XP(e)
- P(a);N_SPINS(c),P_PINQ(F),XB(B)::S(E)
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).