MESON Chess Problem Database
Problem Display
PID: 157046 (1B6/2r1p3/4B1P1/7N/2pbkP2/5r2/2nR2Q1/3N3K w - - 0 1)
Lukashev, Viktor Sergeevich
Best Problems, 2007
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Rc5
- 2.Sg3#
- 1...Rc6
- 2.Sg3#
- 1...Ra7
- 2.Sg3#
- 1...Rb7
- 2.Sg3#
- 1...Rd7
- 2.Sg3#
- 1...Rc8
- 2.Sg3#
- 1...Be3
- 2.Sc3#
- 1...Se3
- 2.Sf2#
- 1...Rc5
- Tries
- 1.Sc3+?
- 1...Ke3
- 2.Qe2#
- 1...Bxc3!
- 1...Ke3
- 1.Bd5+?
- 1...Kf5
- 2.Qg5#
- 1...Kxd5!
- 1...Kf5
- 1.Re2+?
- 1...Kd3
- 2.Bf5#
- 1...Se3
- 2.Sf2#
- 1...Be3!
- 1...Kd3
- 1.Qe2+?
- 1...Re3
- 2.Sf2#
- 1...Be3
- 2.Sc3#
- 1...Se3!
- 1...Re3
- 1.Sc3+?
- Keys
- 1.g7!
- threat
- 2.Qg6#
- 1...Rc5
- 2.Sg3#
- 1...Se3
- 2.Sf2#
- threat
- 1.g7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- R(f);::S(F)
- B(d);N_GUARD,SBLOCK::S(A)
- S(a);SBLOCK,S_CUTB(d)::S(A)
- Tries
- Try
- S(A);CHECK
- Vars
- K(e);N_SPINR(b),P-FLIGHT::QAR1(D)
- Refutation
- B(d);XS(A)
- Try
- B(G);CHECK
- Vars
- K(e);N_SPINR(b),S_FLIGHT::QAR1(D)
- Refutation
- K(e);P_SPINB(d),S_FLIGHT,XB(G)
- Try
- R(C);CHECK
- Vars
- K(e);N_SPINR(b),S_FLIGHT::B(G)
- S(a);P_SPINS(a)::S(A)
- Refutation
- B(d);P_SPINB(d)
- Try
- Q(D);CHECK,N_PINR(b)
- Vars
- R(b);P_SPINR(b)::S(A)
- B(d);P_SPINB(d)::S(A)
- Refutation
- S(a);P_SPINS(a)
- Try
- Actual
- P(H);
- Threat
- QAB(D)
- Vars
- R(f);::S(F)
- S(a);SBLOCK,S_CUTB(d)::S(A)
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).