MESON Chess Problem Database
Problem Display
PID: 174137 (KR4r1/PBkpp3/4R3/P2P1Np1/1p3q2/4p3/7Q/4b3 w - - 0 1)
Buchner, Richard
Hamburger Echo, 1928
#2
9 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rg6
- 2.Rc8#
- 1...Rg7
- 2.Rc8#
- 1...Rxb8+
- 2.axb8Q#
- 1...Rc8
- 2.Rxc8#
- 1...d6
- 2.Rxe7#
- 1...Rg6
- Tries
- 1.Sd4?
- threat
- 2.Sb5#
- 1...Rxb8+
- 2.axb8Q#
- 1...Rc8
- 2.Rxc8#
- 1...d6
- 2.Rxe7#
- 1...dxe6!
- threat
- 1.Rxg8?
- threat
- 2.Rc8#
- 1...d6
- 2.Rxe7#
- 1...dxe6!
- threat
- 1.Qxf4+?
- 1...d6
- 2.Rxe7#
- 1...gxf4!
- 1...d6
- 1.Qc2+?
- 1...Qc4
- 2.Qxc4#
- 1...Bc3!
- 1...Qc4
- 1.Sd4?
- Keys
- 1.Re4!
- threat
- 2.Rc4#
- 1...Rxb8+
- 2.axb8Q#
- 1...Rc8
- 2.Rxc8#
- 1...d6
- 2.Rxe7#
- 1...Rg6
- 2.Rc8#
- 1...Bg3
- 2.Qc2#
- 1...e5
- 2.d6#
- threat
- 1.Re4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(i);N_GUARD,N_PINR(I)::R1(I)
- R(i);CHECK,OGATE,XR(I)::PXR(i)=Q
- R(i);N_GUARD::R1(I),XR(i)
- P(g);N_SPINQ(d),OGATEB::R(E),XP(h)
- Tries
- Try
- S(D);
- Threat
- S(D)
- Vars
- R(i);CHECK,OGATE,XR(I)::PXR(i)=Q
- R(i);N_GUARD::R1(I),XR(i)
- P(g);N_SPINQ(d),OGATEB,SBLOCK::R(E),XP(h)
- Refutation
- P(g);XR(E)
- Try
- R(I);N_SPINR(I),XR(i)
- Threat
- R1(I)
- Vars
- P(g);N_SPINQ(d),OGATEB::R(E),XP(h)
- Refutation
- P(g);XR(E)
- Try
- Q(A);CHECK,XQ(d)
- Vars
- P(g);P_SPINP(g),S_CUTP(e)::R(E),XP(h)
- Refutation
- P(e);XQ(A)
- Try
- Q(A);CHECK,N_PINQ(d)
- Vars
- Q(d);N_GUARD,P_SPINQ(d)::QAR(A),XQ(d)
- Refutation
- B(a);P_SPINB(a)
- Try
- Actual
- R(E);
- Threat
- R(E)
- Vars
- R(i);CHECK,OGATE,XR(I)::PXR(i)=Q
- R(i);N_GUARD::R1(I),XR(i)
- P(g);N_SPINQ(d),OGATEB::R(E),XP(h)
- R(i);N_GUARD,N_PINR(I)::R1(I)
- B(a);N_GUARD,N_SPINQ(d)::QAR(A)
- P(h);N_GUARD,N_SPINQ(d),S_CUTQ(d)::P(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).