MESON Chess Problem Database
Problem Display
PID: 176218 (2r3n1/1p1Qp3/pP6/2k2p1r/K1N5/b2B1p1b/8/3R4 w - - 0 1)
Hoffmann, Fritz
Schach-Echo, 1971
#2
6 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...e5
- 2.Qd6#
- 1...e6
- 2.Qd6#
- 1...e5
- Tries
- 1.Bb1?
- threat
- 2.Qxc8#
- 2.Qd5#
- 1...Kxc4
- 2.Qd4#
- 1...Rh6
- 2.Qd5#
- 1...Rc6
- 2.Qd4#
- 2.Qd5#
- 1...Rc7
- 2.Qd5#
- 2.Qxc7#
- 1...Ra8
- 2.Qd5#
- 2.Qc7#
- 1...Rb8
- 2.Qd5#
- 2.Qc7#
- 1...Rd8
- 2.Qc7#
- 1...Re8
- 2.Qd5#
- 2.Qc7#
- 1...Rf8
- 2.Qd5#
- 2.Qc7#
- 1...Sf6
- 2.Qxc8#
- 1...e6
- 2.Qxc8#
- 1...f4!
- threat
- 1.Bf1?
- threat
- 2.Rd5#
- 2.Qxc8#
- 2.Qd5#
- 1...Bxf1
- 2.Qxc8#
- 2.Qd5#
- 1...Rh6
- 2.Rd5#
- 2.Qd5#
- 1...Rc6
- 2.Rd5#
- 2.Qd4#
- 2.Qd5#
- 1...Rc7
- 2.Rd5#
- 2.Qd5#
- 2.Qxc7#
- 1...Ra8
- 2.Rd5#
- 2.Qd5#
- 2.Qc7#
- 1...Rb8
- 2.Rd5#
- 2.Qd5#
- 2.Qc7#
- 1...Rd8
- 2.Rd5#
- 2.Qc7#
- 1...Re8
- 2.Rd5#
- 2.Qd5#
- 2.Qc7#
- 1...Rf8
- 2.Rd5#
- 2.Qd5#
- 2.Qc7#
- 1...Sf6
- 2.Qxc8#
- 1...e6
- 2.Qxc8#
- 2.Qd6#
- 1...f4!
- threat
- 1.Bc2?
- threat
- 2.Qxc8#
- 2.Qd5#
- 1...Kxc4
- 2.Qd4#
- 1...Rh6
- 2.Qd5#
- 1...Rc6
- 2.Qd4#
- 2.Qd5#
- 1...Rc7
- 2.Qd5#
- 2.Qxc7#
- 1...Ra8
- 2.Qd5#
- 2.Qc7#
- 1...Rb8
- 2.Qd5#
- 2.Qc7#
- 1...Rd8
- 2.Qc7#
- 1...Re8
- 2.Qd5#
- 2.Qc7#
- 1...Rf8
- 2.Qd5#
- 2.Qc7#
- 1...Sf6
- 2.Qxc8#
- 1...e6
- 2.Qxc8#
- 1...f4!
- threat
- 1.Be2?
- threat
- 2.Rd5#
- 2.Qxc8#
- 2.Qd5#
- 1...fxe2
- 2.Qxc8#
- 2.Qd5#
- 1...Rh6
- 2.Rd5#
- 2.Qd5#
- 1...Rc6
- 2.Rd5#
- 2.Qd4#
- 2.Qd5#
- 1...Rc7
- 2.Rd5#
- 2.Qd5#
- 2.Qxc7#
- 1...Ra8
- 2.Rd5#
- 2.Qd5#
- 2.Qc7#
- 1...Rb8
- 2.Rd5#
- 2.Qd5#
- 2.Qc7#
- 1...Rd8
- 2.Rd5#
- 2.Qc7#
- 1...Re8
- 2.Rd5#
- 2.Qd5#
- 2.Qc7#
- 1...Rf8
- 2.Rd5#
- 2.Qd5#
- 2.Qc7#
- 1...Sf6
- 2.Qxc8#
- 1...e6
- 2.Qxc8#
- 2.Qd6#
- 1...f4!
- threat
- 1.Be4?
- threat
- 2.Qxc8#
- 2.Qd4#
- 2.Qd5#
- 1...Kxc4
- 2.Qd4#
- 1...f4
- 2.Qd4#
- 1...Rh6
- 2.Qd4#
- 2.Qd5#
- 1...Rc6
- 2.Qd4#
- 2.Qd5#
- 1...Rc7
- 2.Qd4#
- 2.Qd5#
- 2.Qxc7#
- 1...Ra8
- 2.Qd4#
- 2.Qd5#
- 2.Qc7#
- 1...Rb8
- 2.Qd4#
- 2.Qd5#
- 2.Qc7#
- 1...Rd8
- 2.Qc7#
- 1...Re8
- 2.Qd4#
- 2.Qd5#
- 2.Qc7#
- 1...Rf8
- 2.Qd4#
- 2.Qd5#
- 2.Qc7#
- 1...Bb2
- 2.Qxc8#
- 2.Qd5#
- 1...Sf6
- 2.Qxc8#
- 2.Qd4#
- 1...e5
- 2.Qxc8#
- 2.Qd5#
- 1...e6
- 2.Qxc8#
- 2.Qd4#
- 1...fxe4!
- threat
- 1.Qb5+?
- 1...Kd4
- 2.Qe5#
- 1...axb5+!
- 1...Kd4
- 1.Qxc8+?
- 1...Kd5
- 2.Bb1#
- 2.Bc2#
- 2.Bxf5#
- 1...Kd4!
- 1...Kd5
- 1.Qd4+?
- 1...Kc6
- 2.Sa5#
- 2.Se5#
- 1...Kxd4!
- 1...Kc6
- 1.Qc7+?
- 1...Kd4
- 2.Qe5#
- 1...Kd5
- 2.Bxf5#
- 1...Rxc7!
- 1...Kd4
- 1.Bb1?
- Keys
- 1.Bxf5!
- threat
- 2.Qxc8#
- 2.Qd5#
- 1...Kxc4
- 2.Qd4#
- 1...Rxf5
- 2.Qxc8#
- 1...Bxf5
- 2.Qd5#
- 1...Rh6
- 2.Qd5#
- 1...Rc6
- 2.Qd4#
- 2.Qd5#
- 1...Rc7
- 2.Qd5#
- 2.Qxc7#
- 1...Ra8
- 2.Qd5#
- 2.Qc7#
- 1...Rb8
- 2.Qd5#
- 2.Qc7#
- 1...Rd8
- 2.Qc7#
- 1...Re8
- 2.Qd5#
- 2.Qc7#
- 1...Rf8
- 2.Qd5#
- 2.Qc7#
- 1...Sf6
- 2.Qxc8#
- 1...e6
- 2.Qxc8#
- threat
- 1.Bxf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- P(i);N_GUARD::QAB1(F)
- Tries
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- K(d);P-FLIGHT,XS(D)::QAR1(F)
- R(f);::QAR1(F)
- R(j);N_GUARD::QAR2(F)
- S(k);::QAR(F),XR(j)
- P(i);::QAR(F),XR(j)
- Refutation
- P(e);
- Try
- B(B);
- Threat
- DUALS(3)
- Vars
- S(k);::QAR(F),XR(j)
- Refutation
- P(e);
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- K(d);P-FLIGHT,XS(D)::QAR1(F)
- R(f);::QAR1(F)
- R(j);N_GUARD::QAR2(F)
- S(k);::QAR(F),XR(j)
- P(i);::QAR(F),XR(j)
- Refutation
- P(e);
- Try
- B(B);
- Threat
- DUALS(3)
- Vars
- S(k);::QAR(F),XR(j)
- Refutation
- P(e);
- Try
- B(B);
- Threat
- DUALS(3)
- Vars
- K(d);P-FLIGHT,XS(D)::QAR1(F)
- P(e);::QAB1(F)
- R(j);N_GUARD::QAR2(F)
- Refutation
- P(e);XB(B)
- Try
- Q(F);CHECK
- Vars
- K(d);OGATE,S_FLIGHT::QAB1(F)
- Refutation
- P(g);CHECK,XQ(F)
- Try
- Q(F);CHECK,XR(j)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(F);CHECK
- Refutation
- K(d);S_FLIGHT,XQ(F)
- Try
- Q(F);CHECK
- Vars
- K(d);S_FLIGHT::QAB1(F)
- K(d);P-FLIGHT::R(A)+B(B),XP(e)
- Refutation
- R(j);XQ(F)
- Try
- Actual
- B(B);XP(e)
- Threat
- DUALS(2)
- Vars
- K(d);P-FLIGHT,XS(D)::QAR1(F)
- R(f);XB(B)::QAR(F),XR(j)
- B(c);XB(B)::QAR1(F)
- R(f);::QAR1(F)
- R(j);N_GUARD::QAR2(F)
- S(k);::QAR(F),XR(j)
- P(i);::QAR(F),XR(j)
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).