MESON Chess Problem Database
Problem Display
PID: 105421 (8/P3K1p1/3PNP2/3pkNBR/P3P3/3ppp1B/rr5b/Qn2R3 w - - 0 1)
Erokhin, Vladimir Alekseevich
Sachove umeni (Ceskoslovensky sach), 1977
#2
13 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kxe4
- 2.Rxe3#
- 1...Kxe4
- Tries
- 1.Bxe3?
- threat
- 2.Bd4#
- 1...Kxe4
- 2.Bd2#
- 1...dxe4
- 2.Sfxg7#
- 1...Bg1
- 2.Bf4#
- 1...d4
- 2.Bxd4#
- 1...Rxa4!
- threat
- 1.Bf4+?
- 1...Kxe4
- 2.Rxe3#
- 1...Bxf4!
- 1...Kxe4
- 1.a8Q?
- threat
- 2.Qxd5#
- 1...Kxe4
- 2.Rxe3#
- 1...dxe4
- 2.Qa5#
- 1...d4
- 2.Qd5#
- 1...Sc3!
- threat
- 1.Bxe3?
- Keys
- 1.Sxe3!
- threat
- 2.Sg4#
- 1...Kxe4
- 2.Sc2#
- 1...dxe4
- 2.Bf4#
- threat
- 1.Sxe3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(i);N_SPINR(c),OGATEB,P-FLIGHT,P_SPINP(f),XP(E)::R1(B),XP(f)
- Tries
- Try
- B(G);XP(f)
- Threat
- B(G)
- Vars
- K(i);N_SPINR(c),OGATEB,P-FLIGHT,XP(E)::R(B)+B(G)
- P(h);SBLOCK,XP(E)::R(H)+S(F),XP(j)
- B(d);N_GUARD::B(G)
- P(h);N_SPINR(c)::B(G),XP(h)
- Refutation
- R(b);XP(D)
- Try
- B(G);CHECK
- Vars
- K(i);N_SPINR(c),P-FLIGHT,P_SPINP(f),XP(E)::R1(B),XP(f)
- Refutation
- B(d);XB(G)
- Try
- P(L);
- Threat
- QAR1(L),XP(h)
- Vars
- K(i);N_SPINR(c),OGATEB,P-FLIGHT,P_SPINP(f),XP(E)::R1(B),XP(f)
- P(h);OGATEB,SBLOCK,XP(E)::QAR(L)
- P(h);N_SPINR(c)::QAR1(L)
- Refutation
- S(a);N_SPINR(c)
- Try
- Actual
- S(F);XP(f)
- Threat
- S(F)
- Vars
- K(i);N_SPINR(c),P-FLIGHT,XP(E)::R(B)+S(F)
- P(h);SBLOCK,XP(E)::R(H)+B(G),DCHECK
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).