MESON Chess Problem Database
Problem Display
PID: 90590 (3n4/p2K4/3p1B2/2pkN1P1/R1r2P2/1P1PbN2/2r3B1/3QR3 w - - 0 1)
Beck, Friedrich
Die Schwalbe, 1949
#2
12 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.bxc4#
- 1...Rb2
- 2.bxc4#
- 1...Rd2
- 2.bxc4#
- 1...Re2
- 2.bxc4#
- 1...Rf2
- 2.bxc4#
- 1...Rxg2
- 2.bxc4#
- 1...Rc3
- 2.Sd2#
- 1...Re4
- 2.dxe4#
- 1...Bc1
- 2.dxc4#
- 1...Bg1
- 2.dxc4#
- 1...Bf2
- 2.dxc4#
- 1...Bd4
- 2.Sd2#
- 1...Bxf4
- 2.dxc4#
- 1...Ra2
- Tries
- 1.Sg1+?
- 1...Kd4
- 2.Sxc4#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sf7#
- 1...Re4
- 2.Bxe4#
- 2.dxe4#
- 1...Rxg2!
- 1...Kd4
- 1.Sd2+?
- 1...Re4
- 2.Bxe4#
- 2.dxe4#
- 1...Kd4!
- 1...Re4
- 1.Sh2+?
- 1...Kd4
- 2.Sxc4#
- 2.Seg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sf7#
- 1...Re4
- 2.Bxe4#
- 2.dxe4#
- 1...Rxg2!
- 1...Kd4
- 1.Sd4+?
- 1...Kxd4
- 2.Sxc4#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sf7#
- 1...Rxg2!
- 1...Kxd4
- 1.Sh4+?
- 1...Kd4
- 2.Sxc4#
- 2.Sg4#
- 2.Sc6#
- 2.Seg6#
- 2.Sf7#
- 1...Re4
- 2.Bxe4#
- 2.dxe4#
- 1...Rxg2!
- 1...Kd4
- 1.Sxc4?
- threat
- 2.Sfd2#
- 2.Sxe3#
- 1...Rxg2
- 2.Sxe3#
- 1...Rxc4
- 2.Sd4#
- 2.bxc4#
- 1...Bxf4
- 2.Sfd2#
- 1...Rd2
- 2.Sfxd2#
- 2.Sxe3#
- 1...Rf2
- 2.Sxe3#
- 1...Bc1
- 2.Sfd2#
- 1...Bg1
- 2.Sfd2#
- 1...Bd2
- 2.Sg1#
- 2.Sfxd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 1...Bf2
- 2.Sg1#
- 2.Sfd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 1...Bd4
- 2.Sfd2#
- 1...Re2!
- threat
- 1.Sc6?
- threat
- 2.Se7#
- 1...Re4
- 2.dxe4#
- 1...Sxc6!
- threat
- 1.Sg6?
- threat
- 2.Se7#
- 1...Re4
- 2.dxe4#
- 1...Sc6!
- threat
- 1.Sg1+?
- Keys
- 1.Sg4!
- threat
- 2.Sxe3#
- 1...Bxf4
- 2.dxc4#
- 1...Re2
- 2.bxc4#
- 1...Re4
- 2.dxe4#
- 1...Bc1
- 2.dxc4#
- 1...Bg1
- 2.dxc4#
- 1...Bd2
- 2.Sd4#
- 1...Bf2
- 2.Sd4#
- 2.dxc4#
- 1...Bd4
- 2.Sd2#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD::P(D),XR(c)
- R(a);N_GUARD,XB(C)::P(D),XR(c)
- R(c);N_GUARD::B(C)+S(F)
- R(c);OGATE::QAR(A)+P(E)DCHECK,XR(c)
- B(b);::QAR(A)+P(E)DCHECK,XR(c)
- B(b);SBLOCK,S_CUTR(c)::B(C)+S(F)
- B(b);XP(H)::QAR(A)+P(E)DCHECK,XR(c)
- Tries
- Try
- S(F);CHECK
- Refutation
- R(a);XB(C)
- Try
- S(F);CHECK
- Refutation
- K(e);P-FLIGHT,P_SPINR(c)
- Try
- S(F);CHECK
- Refutation
- R(a);XB(C)
- Try
- S(F);CHECK
- Refutation
- R(a);XB(C)
- Try
- S(F);CHECK
- Refutation
- R(a);XB(C)
- Try
- S(I);XR(c)
- Threat
- DUALS(2)
- Vars
- R(a);XB(C)::S(I),XB(b)
- B(b);XP(H)::B(C)+S(F)
- R(a);::S(I),XB(b)
- B(b);::B(C)+S(F)
- Refutation
- R(a);
- Try
- S(I);
- Threat
- S(I)
- Vars
- R(c);OGATE::QAR(A)+P(E)DCHECK,XR(c)
- Refutation
- S(h);XS(I)
- Try
- S(I);
- Threat
- S(I)
- Vars
- R(c);OGATE::QAR(A)+P(E)DCHECK,XR(c)
- Refutation
- S(h);
- Try
- Actual
- S(I);
- Threat
- S(I),XB(b)
- Vars
- B(b);XP(H)::QAR(A)+P(E)DCHECK,XR(c)
- R(a);N_GUARD::P(D),XR(c)
- R(c);OGATE::QAR(A)+P(E)DCHECK,XR(c)
- B(b);::QAR(A)+P(E)DCHECK,XR(c)
- B(b);S_CUTR(a)::B(C)+S(F)
- B(b);S_CUTR(c)::B(C)+S(F)
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).