MESON Chess Problem Database
Problem Display
PID: 91854 (8/3pBR2/3PP3/2npkNNR/1Qn3p1/3rp1P1/2B1P1K1/8 w - - 0 1)
Deichelbohrer, Horst
Schach-Echo, 1976
#2
12 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Bf6#
- 1...Rd2
- 2.Bf6#
- 1...Ra3
- 2.Bf6#
- 1...Rb3
- 2.Bf6#
- 1...Rc3
- 2.Bf6#
- 1...Rd4
- 2.Bf6#
- 1...Sb2
- 2.Qf4#
- 1...Sd2
- 2.Qf4#
- 1...Sa3
- 2.Qf4#
- 1...Sa5
- 2.Qf4#
- 1...Sb6
- 2.Qf4#
- 1...Sxd6
- 2.Bxd6#
- 2.Qf4#
- 1...d4
- 2.Qxc5#
- 1...Rd1
- Tries
- 1.Sg7?
- 1...Kd4
- 2.Bf6#
- 1...Sxd6
- 2.Sf3#
- 2.Bf6#
- 2.Qf4#
- 1...Sxe6
- 2.Bf6#
- 1...Rd1
- 2.Sf3#
- 1...Rd2
- 2.Sf3#
- 1...Ra3
- 2.Sf3#
- 1...Rb3
- 2.Sf3#
- 1...Rc3
- 2.Sf3#
- 1...Rd4
- 2.Sf3#
- 2.Sh3#
- 2.Se4#
- 2.Sh7#
- 2.Rf5#
- 1...Sb2
- 2.Sf3#
- 2.Sh3#
- 2.Se4#
- 2.Sh7#
- 2.Rf5#
- 2.Qf4#
- 1...Sd2
- 2.Sf3#
- 2.Sh3#
- 2.Se4#
- 2.Sh7#
- 2.Rf5#
- 2.Qf4#
- 1...Sa3
- 2.Sf3#
- 2.Sh3#
- 2.Se4#
- 2.Sh7#
- 2.Rf5#
- 2.Qf4#
- 1...Sa5
- 2.Sf3#
- 2.Sh3#
- 2.Se4#
- 2.Sh7#
- 2.Rf5#
- 2.Qf4#
- 1...Sb6
- 2.Sf3#
- 2.Sh3#
- 2.Se4#
- 2.Sh7#
- 2.Rf5#
- 2.Qf4#
- 1...Sb3
- 2.Bf6#
- 1...Sa4
- 2.Bf6#
- 1...Se4
- 2.Sf3#
- 1...Sa6
- 2.Bf6#
- 1...Sb7
- 2.Bf6#
- 1...d4
- 2.Rf5#
- 2.Qxc5#
- 1...dxe6!
- 1...Kd4
- 1.Qc3+?
- 1...Rxc3
- 2.Bf6#
- 1...Rd4
- 2.Bf6#
- 2.Qxd4#
- 1...d4!
- 1...Rxc3
- 1.Sg7?
- Keys
- 1.Sd4!
- 1...Kxd4
- 2.Bf6#
- 1...Rxd4
- 2.Rf5#
- 1...Sxd6
- 2.Bf6#
- 1...Sxe6
- 2.Bf6#
- 1...dxe6
- 2.Sc6#
- 1...Rd1
- 2.Sgf3#
- 1...Rd2
- 2.Sgf3#
- 1...Ra3
- 2.Sgf3#
- 1...Rb3
- 2.Sgf3#
- 1...Rc3
- 2.Sgf3#
- 1...Sb2
- 2.Rf5#
- 1...Sd2
- 2.Rf5#
- 1...Sa3
- 2.Rf5#
- 1...Sa5
- 2.Rf5#
- 1...Sb6
- 2.Rf5#
- 1...Sb3
- 2.Bf6#
- 1...Sa4
- 2.Bf6#
- 1...Se4
- 2.Sgf3#
- 1...Sa6
- 2.Bf6#
- 1...Sb7
- 2.Bf6#
- 1...Kxd4
- 1.Sd4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 11
- ADDED MATES = 9
- REMOVED MATES = 1
- Sets
- R(a);::B(K)
- R(a);P_PINP(B)::B(K)
- S(c);OGATE::QAB1(E)
- P(f);OGATEB::QAR2(E),XS(e)
- Tries
- Try
- S(F);
- Vars
- K(g);P_SPINS(c),S_FLIGHT::B(K)
- S(e);XP(J)::B(K)
- R(a);::R(H)+S(G),DCHECK
- R(a);P_PINP(B)::R(H)+S(G),DCHECK
- S(e);::B(K)
- S(e);SBLOCK::R(H)+S(G),DCHECK
- Refutation
- P(h);XP(J)
- Try
- Q(E);CHECK
- Vars
- R(a);XQ(E)::B(K)
- Refutation
- P(f);P_SPINP(f)
- Try
- Actual
- S(F);
- Vars
- K(g);P_SPINS(c),S_FLIGHT,XS(F)::B(K)
- R(a);SBLOCK,XS(F)::R1(L)
- S(c);SBLOCK,XP(I)::B(K)
- S(e);XP(J)::B(K)
- P(h);N_GUARD,XP(J)::S(F)
- R(a);::R(H)+S(G),DCHECK
- R(a);P_PINP(B)::R(H)+S(G),DCHECK
- S(c);::R1(L)
- S(e);::B(K)
- S(e);SBLOCK::R(H)+S(G),DCHECK
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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