MESON Chess Problem Database
Problem Display
PID: 140907 (3Q3B/2K5/2RNN3/3k1P2/np2r3/6q1/2n5/b4B2 w - - 0 1)
Ahs, Carl Johan Mathias
Die Schwalbe, 1936
#2
8 + 7
| 15148 | Sadier Collection | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qf2
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qxd6+
- 2.Rxd6#
- 2.Qxd6#
- 1...Qg1
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qg2
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qa3
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qb3
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qc3
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qd3
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qe3
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qf3
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qh3
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qg4
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qg6
- 2.Sc4#
- 2.Sb5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qg7+
- 2.Sf7#
- 1...Qg8
- 2.Se8#
- 1...Re1
- 2.Bc4#
- 1...Re3
- 2.Bc4#
- 1...Rc4
- 2.Bxc4#
- 1...Re5
- 2.Bc4#
- 1...Rxe6
- 2.Bc4#
- 1...Bd4
- 2.Bc4#
- 1...Sd4
- 2.Bc4#
- 1...Sb2
- 2.Rc5#
- 1...Sc3
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Sb6
- 2.Rc5#
- 1...Qe1
- Tries
- 1.Qa8?
- threat
- 2.Rxc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 1...Qxd6+
- 2.Rxd6#
- 1...Rxe6
- 2.Bc4#
- 2.Rxc2#
- 2.Rc3#
- 2.Rc4#
- 1...Bxh8
- 2.Rc5#
- 1...Bf6
- 2.Rc5#
- 1...Bg7
- 2.Rc5#
- 1...Qc3
- 2.Rxc3#
- 2.Rc4#
- 2.Rc5#
- 1...Qg8
- 2.Rc5#
- 1...Rc4
- 2.Bxc4#
- 2.Rxc4#
- 2.Rc5#
- 1...Bc3
- 2.Rxc3#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 1...Se1
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 1...Sa3
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 1...Se3
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 1...Sd4
- 2.Bc4#
- 2.Rc5#
- 1...Sc3
- 2.Rxc3#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 1...Sc5
- 2.Rxc5#
- 1...Sb6
- 2.Rc5#
- 2.Rxb6#
- 2.Qa5#
- 1...Qg7+!
- threat
- 1.Qa8?
- Keys
- 1.Rc3!
- threat
- 2.Qa8#
- 1...Qxd6+
- 2.Qxd6#
- 1...Qxc3+
- 2.Sc4#
- 1...Qg7+
- 2.Sf7#
- 1...Rc4+
- 2.Bxc4#
- 1...Qg8
- 2.Se8#
- 1...Sd4
- 2.Bc4#
- 1...Sc5
- 2.Rxc5#
- 1...Sb6
- 2.Rc5#
- threat
- 1.Rc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(c);CHECK,N_PINS(D)::QAR(G)+S(D)
- Q(c);N_PINS(D)::QAR(G)+S(D)
- R(f);N_GUARD::B(A)
- R(f);N_GUARD,P_PINR(C)::B(A),XR(f)
- R(f);N_GUARD,N_PINS(D)::B(A)
- R(f);N_GUARD,XS(E)::B(A)
- B(a);S_CUTR(f)::B(A)
- S(b);S_CUTR(f)::B(A)
- S(d);N_GUARD::R1(C)
- S(d);N_GUARD::R1(C),XS(d)
- Tries
- Try
- Q(G);
- Threat
- DUALS(6)
- Vars
- Q(c);CHECK,OGATE,XS(D)::QAB(G)+R(C),DCHECK,XQ(c)
- B(a);XB(H)::QAB(G)+R(C),DCHECK
- B(a);::QAB(G)+R(C),DCHECK
- Q(c);N_PINS(D)::QAB(G)+R(C),DCHECK
- S(d);::QAB(G)+R(C),DCHECK,XS(d)
- Refutation
- Q(c);CHECK,N_PINS(D)
- Try
- Actual
- R(C);
- Threat
- QAB(G)
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(D)::QAR1(G),XQ(c)
- Q(c);CHECK,N_PINS(D),XR(C)::QAR(G)+S(D)
- Q(c);CHECK,N_PINS(D)::QAR(G)+S(D)
- R(f);CHECK,N_GUARD::B(A),XR(f)
- Q(c);N_PINS(D)::QAR(G)+S(D)
- S(b);S_CUTR(f)::B(A)
- S(d);N_GUARD::R1(C),XS(d)
- S(d);N_GUARD::R1(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).