MESON Chess Problem Database
Problem Display
PID: 214838 (8/N2b4/3p2Q1/P1k4r/2N1P3/1PPp3q/K3p2b/8 w - - 0 1)
Semenenko, Aleksandr
Semenenko, Valery Yurevich
Zadachi i Etyudi, 1998
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.Qxd6#
- 1...Bg1
- 2.Qxd6#
- 1...d5
- 2.Qb6#
- 1...Re5
- Tries
- 1.Sb6?
- threat
- 2.b4#
- 1...Be6
- 2.Sa4#
- 1...Qe6!
- threat
- 1.Sxd6?
- threat
- 2.Sb7#
- 2.b4#
- 1...Qe6
- 2.Sb7#
- 1...Be6
- 2.Sb7#
- 1...Bc6
- 2.b4#
- 1...Bc8
- 2.b4#
- 1...Bxd6!
- threat
- 1.Qf7?
- threat
- 2.b4#
- 1...Qe6
- 2.Qf2#
- 1...Rd5
- 2.Qxd5#
- 1...Be6
- 2.Qc7#
- 1...d5!
- threat
- 1.Qg1+?
- 1...Qe3
- 2.Qxe3#
- 1...Bxg1!
- 1...Qe3
- 1.Sb6?
- Keys
- 1.Sb2!
- threat
- 2.b4#
- 1...Qe6
- 2.Sxd3#
- 1...Be6
- 2.Sa4#
- threat
- 1.Sb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- R(f);S_CUTB(b)::QAB1(G),XP(g)
- B(b);N_GUARD::QAB1(G),XP(g)
- P(g);OGATE::QAB1(G)
- Tries
- Try
- S(D);
- Threat
- P(B)
- Vars
- B(h);N_GUARD,P_PINP(B)::S(D)
- Refutation
- Q(d);P_PINP(B)
- Try
- S(D);XP(g)
- Threat
- DUALS(2)
- Vars
- Q(d);P_PINP(B)::S(D)
- B(h);P_PINP(B)::S(D)
- B(h);::P(B)
- Refutation
- B(b);XS(D)
- Try
- Q(G);
- Threat
- P(B)
- Vars
- Q(d);N_GUARD::QAB(G)
- R(f);N_GUARD::QAR1(G),XR(f)
- B(h);OGATE::QAR2(G)
- Refutation
- P(g);
- Try
- Q(G);CHECK
- Vars
- Q(d);N_GUARD,P_SPINQ(d)::QAB(G),XQ(d)
- Refutation
- B(b);XQ(G)
- Try
- Actual
- S(D);
- Threat
- P(B)
- Vars
- Q(d);N_GUARD,P_PINP(B)::S(D),XP(c)
- B(h);N_GUARD,P_PINP(B)::S(D)
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).