MESON Chess Problem Database
Problem Display
PID: 145723 (2K1R3/B5p1/2Npn3/3kNp2/Q7/n7/4B3/5r2 w - - 0 1)
Witt, Andreas
3rd Prize, Problem-Forum, 2008
#2
7 + 7
| 23 | Die Schwalbe | 2011 |
| 17267 | FIDE Album (2007-2009) | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Bf3#
- 1...Rb1
- 2.Bf3#
- 1...Rc1
- 2.Bf3#
- 1...Rd1
- 2.Bf3#
- 1...Rg1
- 2.Bf3#
- 1...Rh1
- 2.Bf3#
- 1...Rf3
- 2.Bxf3#
- 1...Sb1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sb5
- 2.Qc4#
- 1...Sd4
- 2.Qxd4#
- 1...Sf4
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sf8
- 2.Qd4#
- 1...Ra1
- Tries
- 1.Sd3?
- threat
- 2.Se7#
- 1...Rc1
- 2.Bf3#
- 1...Sd4
- 2.Sdb4#
- 1...Sf4
- 2.Sdb4#
- 1...Sc5
- 2.Sdb4#
- 1...Sg5
- 2.Sdb4#
- 1...Sc7
- 2.Sdb4#
- 1...Sd8
- 2.Sdb4#
- 1...Sf8
- 2.Sdb4#
- 1...Sc4!
- threat
- 1.Sf3?
- threat
- 2.Se7#
- 1...Rxf3
- 2.Bxf3#
- 1...Sc4
- 2.Qxc4#
- 1...Sd4
- 2.Sb4#
- 1...Sf4
- 2.Sb4#
- 1...Sc5
- 2.Sb4#
- 1...Sg5
- 2.Sb4#
- 1...Sc7
- 2.Sb4#
- 1...Sd8
- 2.Sb4#
- 1...Sf8
- 2.Sb4#
- 1...Rc1!
- threat
- 1.Sg4?
- threat
- 2.Se3#
- 2.Se7#
- 1...Sc4
- 2.Qxc4#
- 1...Sb5
- 2.Se7#
- 2.Qc4#
- 1...Rc1
- 2.Se3#
- 2.Bf3#
- 1...Rf3
- 2.Se7#
- 2.Bxf3#
- 1...Sc2
- 2.Se7#
- 2.Qc4#
- 1...Sd4
- 2.Se3#
- 2.Sb4#
- 1...Sf4
- 2.Se3#
- 2.Sb4#
- 1...Sc5
- 2.Se3#
- 1...Sg5
- 2.Se3#
- 2.Sb4#
- 1...Sc7
- 2.Se3#
- 2.Sb4#
- 1...Sd8
- 2.Se3#
- 2.Sb4#
- 1...Sf8
- 2.Se3#
- 2.Sb4#
- 1...f4
- 2.Se7#
- 1...fxg4!
- threat
- 1.Sg6?
- threat
- 2.Sce7#
- 2.Sge7#
- 1...Sc4
- 2.Qxc4#
- 1...Rc1
- 2.Se7#
- 2.Bf3#
- 1...Sd4
- 2.Sb4#
- 1...Sf4
- 2.Sb4#
- 1...Sg5
- 2.Sb4#
- 1...Sc7
- 2.Sb4#
- 1...Sd8
- 2.Sb4#
- 1...Sf8
- 2.Sb4#
- 1...Sc5!
- threat
- 1.Sf7?
- threat
- 2.Se7#
- 1...Sc4
- 2.Qxc4#
- 1...Rc1
- 2.Bf3#
- 1...Sd4
- 2.Sb4#
- 1...Sf4
- 2.Sb4#
- 1...Sg5
- 2.Sb4#
- 1...Sc7
- 2.Sb4#
- 1...Sd8
- 2.Sb4#
- 1...Sf8
- 2.Sb4#
- 1...Sc5!
- threat
- 1.Bc4+?
- 1...Sxc4
- 2.Qxc4#
- 1...Ke4!
- 1...Sxc4
- 1.Qd1+?
- 1...Rxd1
- 2.Bf3#
- 1...Sd4
- 2.Qxd4#
- 1...Ke4!
- 1...Rxd1
- 1.Qb3+?
- 1...Sc4
- 2.Qxc4#
- 1...Ke4!
- 1...Sc4
- 1.Sd3?
- Keys
- 1.Sd7!
- threat
- 2.Se7#
- 1...Sc4
- 2.Qxc4#
- 1...Rc1
- 2.Bf3#
- 1...Sd4
- 2.Sb4#
- 1...Sf4
- 2.Sb4#
- 1...Sc5
- 2.Sb6#
- 1...Sg5
- 2.Sb4#
- 1...Sc7
- 2.Sb4#
- 1...Sd8
- 2.Sb4#
- 1...Sf8
- 2.Sb4#
- threat
- 1.Sd7!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- R(a);N_GUARD::B(A)
- R(a);N_GUARD,P_PINS(D)::B(A)
- R(a);N_GUARD::B(A),XR(a)
- S(b);N_GUARD::QAB1(B)
- S(b);N_GUARD::QAB1(B),XS(b)
- S(f);N_GUARD::QAR1(B),XS(f)
- S(f);N_GUARD::QAR1(B)
- Tries
- Try
- S(C);
- Threat
- S(D)
- Vars
- R(a);N_GUARD,P_PINS(D)::B(A)
- S(f);::S(C)
- Refutation
- S(b);
- Try
- S(C);
- Threat
- S(D)
- Vars
- R(a);OGATE,XS(C)::B(A),XR(a)
- S(b);N_GUARD::QAB1(B),XS(b)
- S(f);::S(D)
- Refutation
- R(a);P_PINS(D)
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::QAB1(B),XS(b)
- S(f);::S(C)
- P(d);::S(D)
- Refutation
- P(d);XS(C)
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::QAB1(B),XS(b)
- S(f);::S(D)
- Refutation
- S(f);
- Try
- S(C);
- Threat
- S(D)
- Vars
- S(b);N_GUARD::QAB1(B),XS(b)
- R(a);N_GUARD,P_PINS(D)::B(A)
- S(f);::S(D)
- Refutation
- S(f);
- Try
- B(A);CHECK
- Vars
- S(b);OGATE,XB(A)::QAB1(B),XS(b)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(B);CHECK
- Vars
- R(a);XQ(B)::B(A)
- S(f);N_GUARD,P_SPINS(f)::QAR1(B),XS(f)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(B);CHECK
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAB1(B),XS(b)
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- S(C);
- Threat
- S(D)
- Vars
- S(b);N_GUARD::QAB1(B),XS(b)
- R(a);N_GUARD,P_PINS(D)::B(A)
- S(f);::S(D)
- S(f);SBLOCK::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).