MESON Chess Problem Database
Problem Display
PID: 164538 (n4bb1/3R3p/4B2p/KPk2rNQ/4p3/N1P3B1/n2P1P2/4q3 w - - 0 1)
Jankevics, Karlis
Sachmatija, 2007
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxd2
- 2.Sxe4#
- 1...Qxf2
- 2.Sxe4#
- 1...Qa1
- 2.Sxe4#
- 1...Qc1
- 2.Sxe4#
- 1...Qd1
- 2.Sxe4#
- 1...Qf1
- 2.Sxe4#
- 1...Qg1
- 2.Sxe4#
- 1...Rxf2
- 2.Sf3#
- 2.Sxe4#
- 2.Rd5#
- 1...Rf3
- 2.Sxf3#
- 2.Sxe4#
- 2.Rd5#
- 1...Rf4
- 2.Sxe4#
- 2.Rd5#
- 1...Rd5
- 2.Rxd5#
- 1...Rf6
- 2.Sxe4#
- 2.Rd5#
- 1...Rf7
- 2.Sxe4#
- 2.Sxf7#
- 2.Rd5#
- 1...Bd6
- 2.Bxd6#
- 1...Bg7
- 2.Bd6#
- 1...Bxe6
- 2.Sxe6#
- 1...Sb4
- 2.cxb4#
- 1...Sb6
- 2.Rc7#
- 1...Sc7
- 2.Rxc7#
- 1...e3
- 2.Se4#
- 2.d4#
- 1...Qxd2
- Tries
- 1.Be5?
- threat
- 2.Bd4#
- 2.Rd5#
- 1...Qxd2
- 2.Sxe4#
- 1...Qxf2
- 2.Sxe4#
- 2.Rd5#
- 1...Bxe6
- 2.Sxe6#
- 2.Bd4#
- 1...Sxc3
- 2.Bd4#
- 1...Qe3
- 2.Rd5#
- 1...Bd6
- 2.Bd4#
- 2.Bxd6#
- 1...Bg7
- 2.Bd6#
- 2.Rd5#
- 1...Sb4
- 2.Bd4#
- 2.cxb4#
- 1...Sb6
- 2.Bd4#
- 2.Rc7#
- 1...Sc7
- 2.Bd4#
- 2.Rxc7#
- 1...Rxe5!
- threat
- 1.Qe2?
- threat
- 2.Sxe4#
- 2.Qc4#
- 1...Rxg5
- 2.Qc4#
- 1...Bxe6
- 2.Sxe4#
- 2.Sxe6#
- 1...Sxc3
- 2.Qc4#
- 1...hxg5
- 2.Qc4#
- 1...Qb1
- 2.Qc4#
- 2.Qe3#
- 1...Qf1
- 2.Sxe4#
- 2.Qe3#
- 1...Qh1
- 2.Qc4#
- 2.Qe3#
- 1...Rf4
- 2.Rd5#
- 2.Qc4#
- 1...Re5
- 2.Qc4#
- 1...Sb6
- 2.Sxe4#
- 2.Rc7#
- 1...e3
- 2.Se4#
- 2.Qc4#
- 2.d4#
- 1...Qxe2!
- threat
- 1.Be5?
- Keys
- 1.Qf3!
- threat
- 2.Qxf5#
- 1...Qxd2
- 2.Sxe4#
- 1...Qxf2
- 2.Sxe4#
- 1...Rxf3
- 2.Rd5#
- 1...Rxg5
- 2.Qxf8#
- 1...Bxe6
- 2.Sxe6#
- 1...Sxc3
- 2.Qxc3#
- 1...exf3
- 2.d4#
- 1...Rf4
- 2.Rd5#
- 1...Rd5
- 2.Rxd5#
- 1...Re5
- 2.Qxf8#
- 1...Rf6
- 2.Rd5#
- 1...Rf7
- 2.Rd5#
- 1...Bd6
- 2.Bxd6#
- 1...Bg7
- 2.Bd6#
- 1...Sb4
- 2.cxb4#
- 1...Sb6
- 2.Rc7#
- 1...Sc7
- 2.Rxc7#
- threat
- 1.Qf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 5
- Sets
- Q(a);N_GUARD,P_PINP(D),XP(A)::S(H),XP(c)
- Q(a);N_GUARD,XP(B)::S(H),XP(c)
- Q(a);N_GUARD::S(H),XP(c)
- R(e);N_GUARD::R1(K),XR(e)
- B(i);N_GUARD::B(E),XB(i)
- B(i);N_GUARD::B(E)
- B(j);XB(J)::S(H),XB(j)
- S(b);OGATE::P(D),XS(b)
- S(h);N_GUARD::R(K)
- S(h);N_GUARD::R(K),XS(h)
- Tries
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,P_PINP(D),XP(A)::S(H),XP(c)
- S(b);XP(D)::B(E)
- Q(a);::R1(K)
- Refutation
- R(e);XB(E)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(e);XS(H)::QAR1(I)
- S(b);XP(D)::QAR1(I)
- P(f);XS(H)::QAR1(I)
- R(e);::QAR1(I)
- Refutation
- Q(a);XQ(I)
- Try
- Actual
- Q(I);
- Threat
- QAR(I),XR(e)
- Vars
- Q(a);N_GUARD,P_PINP(D),XP(A)::S(H),XP(c)
- Q(a);N_GUARD,XP(B)::S(H),XP(c)
- R(e);N_GUARD,XQ(I)::R1(K)
- R(e);OGATE,XS(H)::QAB(I),XB(i)
- B(j);XB(J)::S(H),XB(j)
- S(b);OGATE,XP(D)::QAR2(I),XS(b)
- P(c);N_GUARD,XQ(I)::P(A)
- R(e);N_GUARD::R1(K)
- R(e);N_GUARD::R1(K),XR(e)
- R(e);OGATE::QAB(I),XB(i)
- B(i);N_GUARD::B(E),XB(i)
- B(i);N_GUARD::B(E)
- S(b);OGATE::P(D),XS(b)
- S(h);N_GUARD::R(K)
- S(h);N_GUARD::R(K),XS(h)
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).