MESON Chess Problem Database
Problem Display
PID: 89831 (B2Nn3/4p3/1p2P3/1Rn1k1K1/3RP3/8/5B1p/8 w - - 0 1)
Hasenzahl, Karl
Die Schwalbe, 1960
#2
8 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Tries
- 1.Ra4?
- threat
- 2.Bg3#
- 1...Kd6
- 2.Bg3#
- 1...h1S!
- threat
- 1.Rdb4?
- threat
- 2.Bg3#
- 1...Kd6
- 2.Bg3#
- 1...h1S!
- threat
- 1.Rc4?
- threat
- 2.Bg3#
- 1...Kd6
- 2.Bg3#
- 1...h1S!
- threat
- 1.Rd7?
- threat
- 2.Bg3#
- 2.Bd4#
- 1...h1S
- 2.Bd4#
- 1...Sd6!
- threat
- 1.Rxb6?
- threat
- 2.Sf7#
- 1...Sxe4+
- 2.Rxe4#
- 1...Sxe6+
- 2.Rxe6#
- 1...Sd6!
- threat
- 1.Ra4?
- Keys
- 1.Bd5!
- threat
- 2.Sf7#
- 1...Sxe4+
- 2.Bxe4#
- 1...Sxe6+
- 2.Bxe6#
- 1...Kd6
- 2.Bg3#
- 1...Sd6
- 2.Sc6#
- threat
- 1.Bd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Tries
- Try
- R(B);
- Threat
- B(A)
- Vars
- K(c);N_SPINS(b),S_FLIGHT::B(A)
- Refutation
- P(a);
- Try
- R(B);
- Threat
- B(A)
- Vars
- K(c);N_SPINS(b),S_FLIGHT::B(A)
- Refutation
- P(a);
- Try
- R(B);
- Threat
- B(A)
- Vars
- K(c);N_SPINS(b),S_FLIGHT::B(A)
- Refutation
- P(a);
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- P(a);::B(A)
- Refutation
- S(f);
- Try
- R(D);N_PINS(b),XP(d)
- Threat
- S(H)
- Vars
- S(b);CHECK,OGATE,XP(C)::R1(B),XS(b)
- S(b);CHECK,OGATE,XP(F)::R1(D),XS(b)
- Refutation
- S(f);
- Try
- Actual
- B(G);N_PINS(b)
- Threat
- S(H)
- Vars
- S(b);CHECK,OGATE,XP(C)::R(D)+B(G),XS(b)
- S(b);CHECK,OGATE,XP(F)::R(D)+B(G),XS(b)
- K(c);S_FLIGHT::B(A)
- S(f);SBLOCK::S(H)
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).