MESON Chess Problem Database
Problem Display
PID: 177474 (5r2/1q4b1/b3B3/5p2/2p1kB2/2PpN1K1/8/1Q2N3 w - - 0 1)
Jankevics, Karlis
Sachova skladba, 2009
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Bxd5#
- 1...Qc8
- 2.Bd5#
- 1...Qxb1
- 2.Bd5#
- 1...Qb2
- 2.Bd5#
- 1...Qb3
- 2.Bd5#
- 1...Qb4
- 2.Bd5#
- 1...Qb6
- 2.Bd5#
- 1...Qa7
- 2.Bd5#
- 1...Qc7
- 2.Bd5#
- 1...Qe7
- 2.Bd5#
- 1...Qb8
- 2.Bd5#
- 1...Ra8
- 2.Bxf5#
- 1...Rb8
- 2.Bxf5#
- 1...Rc8
- 2.Bxf5#
- 1...Rd8
- 2.Bxf5#
- 1...Re8
- 2.Bxf5#
- 1...Rg8
- 2.Bxf5#
- 1...Rh8
- 2.Bxf5#
- 1...Bf6
- 2.Bxf5#
- 1...Qd5
- Tries
- 1.Sxd3?
- threat
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sc5#
- 1...Qxb1
- 2.Sf2#
- 2.Sc5#
- 1...cxd3
- 2.Qh1#
- 1...Qd5
- 2.Sf2#
- 2.Sc5#
- 2.Bxd5#
- 1...Qb2
- 2.Sxb2#
- 2.Sf2#
- 2.Sc5#
- 2.Bd5#
- 1...Qb3
- 2.Sf2#
- 2.Sc5#
- 2.Bd5#
- 1...Qb4
- 2.Sb2#
- 2.Sf2#
- 2.Sxb4#
- 2.Sc5#
- 2.Bd5#
- 1...Qd7
- 2.Sf2#
- 2.Sc5#
- 1...Rd8
- 2.Sf2#
- 2.Sc5#
- 2.Bxf5#
- 1...Bxc3!
- threat
- 1.Sf3?
- threat
- 2.Sd2#
- 2.Sg5#
- 1...Qb2
- 2.Sg5#
- 2.Bd5#
- 1...Qe7
- 2.Sd2#
- 2.Bd5#
- 1...Bf6
- 2.Sd2#
- 2.Bxf5#
- 1...Bh6
- 2.Sd2#
- 1...Bxc3!
- threat
- 1.Sxc4?
- threat
- 2.Sd2#
- 2.Sd6#
- 2.Qxd3#
- 1...Qxb1
- 2.Sd2#
- 2.Sd6#
- 1...Bxc3
- 2.Qxd3#
- 1...Qb2
- 2.Sd6#
- 2.Qxd3#
- 1...Qd5
- 2.Sd2#
- 1...Qc6
- 2.Sd2#
- 2.Qxd3#
- 1...Qb4
- 2.Sd2#
- 2.Qxd3#
- 1...Qb6
- 2.Sd2#
- 2.Qxd3#
- 1...Qc7
- 2.Sd2#
- 2.Qxd3#
- 1...Qd7
- 2.Sd2#
- 1...Qe7
- 2.Sd2#
- 2.Qxd3#
- 1...Qb8
- 2.Sd2#
- 2.Qxd3#
- 1...Rd8
- 2.Sd2#
- 1...Be5
- 2.Sd2#
- 2.Qxd3#
- 1...Bxc4!
- threat
- 1.Qa2?
- threat
- 2.Qg2#
- 1...Qb2
- 2.Bd5#
- 1...d2
- 2.Qc2#
- 1...Bxc3!
- threat
- 1.Qb2?
- threat
- 2.Qg2#
- 1...Qxb2
- 2.Bd5#
- 1...d2
- 2.Qc2#
- 1...Bxc3!
- threat
- 1.Sxd3?
- Keys
- 1.S1c2!
- threat
- 2.Qh1#
- 1...Qxb1
- 2.Bd5#
- 1...dxc2
- 2.Qxc2#
- 1...d2
- 2.Sb4#
- 1...Rh8
- 2.Bxf5#
- threat
- 1.S1c2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 17
- Sets
- Q(f);N_GUARD::B(G),XQ(f)
- Q(f);N_GUARD::B(G)
- Q(f);N_GUARD,N_SPINP(a),XQ(A)::B(G)
- Q(f);N_GUARD,P_PINB(F)::B(G)
- R(h);N_GUARD::B(G),XP(d)
- B(g);S_CUTR(h)::B(G),XP(d)
- Tries
- Try
- S(B);XP(a)
- Threat
- DUALS(4)
- Vars
- P(b);P_SPINP(b),SBLOCK,XS(B)::QAB(A)
- Refutation
- B(g);XP(C)
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- B(g);::S(B)
- Refutation
- B(g);XP(C)
- Try
- S(D);XP(b)
- Threat
- DUALS(3)
- Vars
- B(g);XP(C)::QAB1(A),XP(a)
- Q(f);::S(D)
- R(h);::S(D)
- Refutation
- B(e);XS(D)
- Try
- Q(A);N_PINP(a)
- Threat
- QAB(A)
- Vars
- Q(f);N_GUARD::B(G)
- P(a);OGATEB::QAB(A)
- Refutation
- B(g);XP(C)
- Try
- Q(A);N_PINP(a)
- Threat
- QAB(A)
- Vars
- Q(f);N_GUARD,XQ(A)::B(G)
- P(a);OGATEB::QAB(A)
- Refutation
- B(g);XP(C)
- Try
- Actual
- S(B);N_PINP(a)
- Threat
- QAB(A)
- Vars
- Q(f);N_GUARD,XQ(A)::B(G)
- P(a);OGATE,P_SPINP(a),XS(B)::QAB(A),XP(a)
- P(a);::QAB(A)+S(B)
- R(h);N_GUARD::B(G),XP(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).