MESON Chess Problem Database
Problem Display
PID: 250696 (3R1R2/8/3N1N2/3PkP2/4r3/2P1n1P1/4Q3/2K4b w - - 0 1)
Sychov, Vladimir Petrovich
Comm., Thessalonika Olympic Ty., 1984
#2
10 + 4
| 14867 | BCPS Library | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sg2
- 2.Qxe4#
- 1...Sxd5
- 2.Sg4#
- 1...Sxf5
- 2.Sc4#
- 1...Sg2
- Tries
- 1.Sc4+?
- 1...Kxf5
- 2.Qh5#
- 1...Sxc4
- 2.Sg4#
- 1...Rxc4!
- 1...Kxf5
- 1.Sg4+?
- 1...Kxd5
- 2.Qb5#
- 1...Sxg4
- 2.Sc4#
- 1...Rxg4!
- 1...Kxd5
- 1.Qb5?
- threat
- 2.Qe8#
- 1...Sxd5
- 2.Qxd5#
- 1...Sxf5!
- threat
- 1.Qh5?
- threat
- 2.Qe8#
- 1...Sxf5
- 2.Qxf5#
- 1...Sxd5!
- threat
- 1.Sc4+?
- Keys
- 1.Qa6!
- threat
- 2.Rde8#
- 1...Sxd5
- 2.Sd7#
- 1...Sxf5
- 2.Sf7#
- threat
- 1.Qa6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- S(b);OGATE,P_SPINR(c)::QAR1(B),XR(c)
- S(b);N_GUARD,P_SPINR(c),SBLOCK,XP(E)::S(H)
- S(b);N_GUARD,P_SPINR(c),SBLOCK,XP(F)::S(G)
- Tries
- Try
- S(G);CHECK
- Vars
- K(d);P-FLIGHT,S_CUTR(c),S_CUTS(b),XP(F)::QAR2(B)
- S(b);P_SPINR(c),XS(G)::S(H)
- Refutation
- R(c);P_PINP(C),P_SPINS(b),XS(G)
- Try
- S(H);CHECK
- Vars
- K(d);P-FLIGHT,S_CUTR(c),S_CUTS(b),XP(E)::QAR2(B)
- S(b);P_SPINR(c),XS(H)::S(G)
- Refutation
- R(c);P_SPINS(b),XS(H)
- Try
- Q(B);
- Threat
- QAR(B)
- Vars
- S(b);OGATE,P_SPINS(b),XP(E)::QAR1(B),XS(b)
- Refutation
- S(b);XP(F)
- Try
- Q(B);
- Threat
- QAR(B)
- Vars
- S(b);OGATE,P_SPINS(b),XP(F)::QAR1(B),XS(b)
- Refutation
- S(b);XP(E)
- Try
- Actual
- Q(B);
- Threat
- R(I)
- Vars
- S(b);SBLOCK,XP(E)::S(H)
- S(b);SBLOCK,XP(F)::S(G)
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).