MESON Chess Problem Database
Problem Display
PID: 162146 (8/8/5q2/2n1NP2/3kP1p1/n1RP2B1/5PK1/3RQ3 w - - 0 1)
Jankevics, Karlis
Sachmatija, 2009
#2
10 + 5
SOLUTION
- SOUND
- Sets
- 1...Qh4
- 2.Sc6#
- 1...Qg5
- 2.Sc6#
- 1...Qe7
- 2.Sc6#
- 1...Qg7
- 2.Sc6#
- 1...Qd8
- 2.Sc6#
- 1...Qh8
- 2.Sc6#
- 1...Qxf5
- 2.Sc6#
- 1...Qc6
- 2.Sxc6#
- 1...Qf7
- 2.Sc6#
- 1...Qf8
- 2.Sc6#
- 1...Sb1
- 2.Rc4#
- 1...Sc2
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- 1...Sb5
- 2.Rc4#
- 1...Sxd3
- 2.Rdxd3#
- 1...Sxe4
- 2.dxe4#
- 1...Se6
- 2.Sc6#
- 1...Qh4
- Tries
- 1.Rdc1?
- threat
- 2.Qe3#
- 1...Sxe4
- 2.Qxe4#
- 1...Qg5
- 2.Sc6#
- 1...Sc2
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- 1...Qh6!
- threat
- 1.Rcc1?
- threat
- 2.Qc3#
- 2.Qe3#
- 1...Sxd3
- 2.Rxd3#
- 2.Qe3#
- 1...Sxe4
- 2.Qxe4#
- 2.dxe4#
- 1...Qg5
- 2.Sc6#
- 2.Qc3#
- 1...Qh6
- 2.Qc3#
- 1...Sb1
- 2.Rc4#
- 2.Qb4#
- 2.Qe3#
- 1...Sc4
- 2.Rxc4#
- 2.Qc3#
- 1...Sb5
- 2.Rc4#
- 2.Qb4#
- 2.Qe3#
- 1...Sa4
- 2.Qe3#
- 1...Sc2!
- threat
- 1.Rc2?
- threat
- 2.Qc3#
- 2.Qe3#
- 1...Sxd3
- 2.Rxd3#
- 2.Qe3#
- 1...Sxe4
- 2.Qxe4#
- 2.dxe4#
- 1...Qg5
- 2.Sc6#
- 2.Qc3#
- 1...Qh6
- 2.Qc3#
- 1...Sb1
- 2.Rc4#
- 2.Qb4#
- 2.Qe3#
- 1...Sc4
- 2.Rxc4#
- 2.Qc3#
- 1...Sb5
- 2.Rc4#
- 2.Qb4#
- 2.Qe3#
- 1...Sa4
- 2.Qe3#
- 1...Sxc2!
- threat
- 1.Rxa3?
- threat
- 2.Qc3#
- 2.Qb4#
- 2.Qe3#
- 1...Sxd3
- 2.Qb4#
- 2.Qe3#
- 1...Sb3
- 2.Qb4#
- 1...Sa4
- 2.Qb4#
- 2.Qe3#
- 1...Sa6
- 2.Qc3#
- 2.Qe3#
- 1...Qa6
- 2.Qc3#
- 2.Qe3#
- 1...Qg5
- 2.Sc6#
- 2.Qc3#
- 2.Qb4#
- 1...Qb6
- 2.Qc3#
- 2.Qe3#
- 1...Qe6
- 2.Qc3#
- 2.Qe3#
- 1...Qh6
- 2.Qc3#
- 2.Qb4#
- 1...Qf7
- 2.Sc6#
- 2.Qc3#
- 2.Qe3#
- 1...Sxe4!
- threat
- 1.Rxc5?
- threat
- 2.Rd5#
- 2.Qc3#
- 2.Qe3#
- 1...Qxe5
- 2.Qc3#
- 2.Qe3#
- 1...Qg5
- 2.Rd5#
- 2.Qc3#
- 1...Qd8
- 2.Qc3#
- 2.Qe3#
- 1...Qc6
- 2.Qc3#
- 2.Qe3#
- 1...Qd6
- 2.Qc3#
- 2.Qe3#
- 1...Qe6
- 2.Qc3#
- 2.Qe3#
- 1...Qh6
- 2.Rd5#
- 2.Qc3#
- 1...Qf7
- 2.Qc3#
- 2.Qe3#
- 1...Sb1
- 2.Rc4#
- 2.Rd5#
- 2.Qb4#
- 2.Qe3#
- 1...Sc2
- 2.Rc4#
- 2.Rd5#
- 2.Qc3#
- 1...Sc4
- 2.Rxc4#
- 2.Rd5#
- 1...Sb5
- 2.Rc4#
- 2.Rd5#
- 2.Qb4#
- 2.Qe3#
- 1...Kxc5!
- threat
- 1.Rdc1?
- Keys
- 1.f4!
- threat
- 2.Bf2#
- 1...gxf4 ep+
- 2.Sxf3#
- 1...Sxe4
- 2.dxe4#
- 1...Qh4
- 2.Sc6#
- 1...Sc2
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- threat
- 1.f4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- Q(e);N_GUARD::S(I)
- Q(e);N_GUARD,XP(J)::S(I)
- Q(e);N_GUARD,P_PINP(H)::S(I),XQ(e)
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD::R1(E),XS(a)
- S(d);OGATE,P_SPINS(d),XP(F)::R1(A),XS(d)
- S(d);OGATE,XP(H)::R(A)+P(F),XS(d)
- S(d);S_CUTQ(e)::S(I)
- Tries
- Try
- R(A);
- Threat
- QAB1(B)
- Vars
- S(d);OGATE,XP(H)::QAR1(B),XS(d)
- Q(e);N_GUARD::S(I)
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD::R1(E),XS(a)
- Refutation
- Q(e);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- Q(e);::QAB1(B)
- S(d);::QAB1(B)
- Refutation
- S(a);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- Q(e);::QAB1(B)
- S(d);::QAB1(B)
- Refutation
- S(a);XR(E)
- Try
- R(E);XS(a)
- Threat
- DUALS(3)
- Vars
- S(d);::QAR2(B)
- Refutation
- S(d);XP(H)
- Try
- R(E);XS(d)
- Threat
- DUALS(3)
- Refutation
- K(b);S_FLIGHT,XR(E)
- Try
- Actual
- P(C);
- Threat
- B(G)
- Vars
- P(c);CHECK,EP,N_GUARD,XP(C)::S(I),XP(c)
- S(d);OGATE,XP(H)::R(A)+P(F),XS(d)
- Q(e);N_GUARD::S(I)
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD::R1(E),XS(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).