MESON Chess Problem Database
Problem Display
PID: 200636 (KB2R2b/p2NN3/7p/7P/3k4/1R2nP2/4B3/q2n2Q1 w - - 0 1)
Bylevski, Aleksandr
Bylevski, Boris
Problemas, 1993
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Bxa7#
- 1...Qb1
- 2.Bxa7#
- 1...Be5
- 2.Bxe5#
- 1...Bg7
- 2.Qxg7#
- 1...Sb2
- 2.Qxe3#
- 1...Sf2
- 2.Qxa1#
- 1...Sc3
- 2.Rb4#
- 1...a5
- 2.Ba7#
- 1...a6
- 2.Ba7#
- 1...Qb2
- Tries
- 1.Sf8?
- threat
- 2.Se6#
- 1...Kc5
- 2.Se6#
- 1...Qa6!
- threat
- 1.Rf8?
- threat
- 2.Rf4#
- 1...Qb1
- 2.Bxa7#
- 1...Be5
- 2.Bxe5#
- 1...Sf2
- 2.Qxa1#
- 1...Sc3
- 2.Rb4#
- 1...Bf6!
- threat
- 1.Rxh8?
- threat
- 2.Be5#
- 2.Qg7#
- 1...Qa6
- 2.Be5#
- 1...Qa5!
- threat
- 1.Qxd1+?
- 1...Qxd1
- 2.Bxa7#
- 1...Sxd1!
- 1...Qxd1
- 1.Qg5?
- threat
- 2.Sc6#
- 2.Qf4#
- 2.Qc5#
- 1...Qa6
- 2.Qf4#
- 2.Qc5#
- 1...Qc3
- 2.Qf4#
- 1...Qb1
- 2.Sc6#
- 2.Bxa7#
- 2.Qc5#
- 1...Qc1
- 2.Qf4#
- 1...Qa3
- 2.Sc6#
- 2.Qf4#
- 1...Qa4
- 2.Qf4#
- 2.Qc5#
- 1...Qa5
- 2.Sc6#
- 2.Qf4#
- 1...Be5
- 2.Bxe5#
- 2.Qxe5#
- 1...Sf2
- 2.Sc6#
- 2.Qxe3#
- 2.Qc5#
- 1...Sc3
- 2.Sc6#
- 2.Qc5#
- 1...Sg2
- 2.Sc6#
- 2.Qd2#
- 2.Qc5#
- 2.Qd5#
- 1...Sd5
- 2.Sf5#
- 2.Sc6#
- 2.Qd2#
- 2.Qxd5#
- 1...Sf5
- 2.Qd2#
- 2.Qf4#
- 2.Qg4#
- 1...hxg5!
- threat
- 1.Qg6?
- threat
- 2.Qd3#
- 2.Qe4#
- 1...Qa6
- 2.Qe4#
- 1...Qc3
- 2.Qe4#
- 1...Qb1
- 2.Bxa7#
- 1...Sb2
- 2.Qe4#
- 1...Sc3
- 2.Qd3#
- 1...Sf5
- 2.Qg4#
- 1...Sf2!
- threat
- 1.Qg8?
- threat
- 2.Sc6#
- 2.Rd3#
- 2.Qxh8#
- 1...Qc3
- 2.Qxh8#
- 1...Qb1
- 2.Sc6#
- 2.Bxa7#
- 2.Qxh8#
- 1...Qc1
- 2.Rd3#
- 2.Qxh8#
- 1...Qa3
- 2.Sc6#
- 2.Qxh8#
- 1...Qa4
- 2.Rd3#
- 2.Qxh8#
- 1...Qa5
- 2.Sc6#
- 2.Rd3#
- 1...Be5
- 2.Sc6#
- 2.Bxe5#
- 2.Rd3#
- 1...Bf6
- 2.Sc6#
- 2.Rd3#
- 1...Bg7
- 2.Sc6#
- 2.Rd3#
- 2.Qxg7#
- 1...Sb2
- 2.Sc6#
- 2.Qxh8#
- 1...Sf2
- 2.Sc6#
- 2.Qxh8#
- 1...Sc3
- 2.Sc6#
- 2.Qxh8#
- 1...Sc4
- 2.Sf5#
- 2.Sc6#
- 2.Rd3#
- 2.Qxc4#
- 2.Qd5#
- 2.Qg4#
- 1...Sg4
- 2.Sf5#
- 2.Sc6#
- 2.Rd3#
- 2.Qc4#
- 2.Qd5#
- 2.Qxg4#
- 1...Sd5
- 2.Sf5#
- 2.Sc6#
- 2.Qxd5#
- 1...Sf5
- 2.Sxf5#
- 2.Sc6#
- 2.Rd3#
- 2.Qc4#
- 2.Qd5#
- 2.Qg4#
- 1...Qa6!
- threat
- 1.Sf8?
- Keys
- 1.Rg8!
- threat
- 2.Rg4#
- 1...Qb1
- 2.Bxa7#
- 1...Be5
- 2.Bxe5#
- 1...Bg7
- 2.Qxg7#
- 1...Sf2
- 2.Qxa1#
- 1...Sc3
- 2.Rb4#
- threat
- 1.Rg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- Q(a);N_GUARD::B(I),XP(f)
- B(g);N_GUARD::B(I),XB(g)
- B(g);N_GUARD::QAB(A),XB(g)
- S(b);N_GUARD::QAB1(A),XS(c)
- S(b);N_SPINS(c),OGATE::QAB(A),XQ(a)
- S(b);SBLOCK::R(C)
- P(f);S_CUTQ(a)::B(I)
- Tries
- Try
- S(F);
- Threat
- S(F)
- Vars
- K(d);S_FLIGHT::S(F)
- Refutation
- Q(a);
- Try
- R(J);
- Threat
- R(J)
- Vars
- Q(a);N_GUARD::B(I),XP(f)
- B(g);N_GUARD::B(I),XB(g)
- S(b);N_SPINS(c),OGATE::QAB(A),XQ(a)
- S(b);SBLOCK::R(C)
- Refutation
- B(g);
- Try
- R(J);XB(g)
- Threat
- DUALS(2)
- Vars
- Q(a);::B(I)
- Refutation
- Q(a);
- Try
- Q(A);CHECK,N_PINS(c),XS(b)
- Vars
- Q(a);XQ(A)::B(I),XP(f)
- Refutation
- S(c);XQ(A)
- Try
- Q(A);N_PINS(c)
- Threat
- DUALS(3)
- Vars
- Q(a);::QAR2(A)
- Refutation
- P(e);XQ(A)
- Try
- Q(A);N_PINS(c)
- Threat
- DUALS(2)
- Vars
- Q(a);::QAR1(A)
- Q(a);N_GUARD::B(I),XP(f)
- S(b);::QAR1(A)
- S(c);N_GUARD::QAR(A)
- Refutation
- S(b);
- Try
- Q(A);N_PINS(c)
- Threat
- DUALS(3)
- Vars
- Q(a);::QAB(A),XB(g)
- Refutation
- Q(a);
- Try
- Actual
- R(J);
- Threat
- R(J)
- Vars
- Q(a);N_GUARD::B(I),XP(f)
- B(g);N_GUARD::B(I),XB(g)
- B(g);N_GUARD::QAB(A),XB(g)
- S(b);N_SPINS(c),OGATE::QAB(A),XQ(a)
- S(b);SBLOCK::R(C)
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).