MESON Chess Problem Database
Problem Display
PID: 154262 (8/q2NR2K/r3R3/3k1N2/8/1P1pPp2/5n2/6Q1 w - - 0 1)
Popovski, Aleksandr
Die Schwalbe, 2014
#2
8 + 6
SOLUTION
- SOUND
- Sets
- 1...Qc5
- 2.Sf6#
- 1...Ra1
- 2.Rd6#
- 1...Ra2
- 2.Rd6#
- 1...Ra3
- 2.Rd6#
- 1...Ra4
- 2.Rd6#
- 1...Ra5
- 2.Rd6#
- 1...Rc6
- 2.Re5#
- 1...Rd6
- 2.Rxd6#
- 1...Sd1
- 2.e4#
- 1...Sh1
- 2.e4#
- 1...Sh3
- 2.e4#
- 1...Sg4
- 2.e4#
- 1...Qc5
- Tries
- 1.Qa1?
- threat
- 2.Qe5#
- 1...Qxe3
- 2.Sxe3#
- 1...Rxa1
- 2.Rd6#
- 1...Rd6
- 2.Rxd6#
- 1...Qd4
- 2.Qxd4#
- 1...Qb8
- 2.Qd4#
- 1...Qc7
- 2.Qd4#
- 1...Sg4
- 2.e4#
- 1...Rxe6!
- threat
- 1.Qc1?
- threat
- 2.Sf6#
- 2.Re5#
- 2.Qc4#
- 1...Qxe3
- 2.Sf6#
- 2.Qc4#
- 1...Qxd7
- 2.Re5#
- 2.Qc4#
- 1...Rxe6
- 2.Qc4#
- 1...Qc5
- 2.Sf6#
- 2.Qxc5#
- 1...Qb8
- 2.Sf6#
- 2.Qc4#
- 2.Qc5#
- 1...Qc7
- 2.Sf6#
- 1...Ra4
- 2.Sf6#
- 2.Re5#
- 2.Rd6#
- 2.Qc6#
- 1...Rc6
- 2.Sf6#
- 2.Re5#
- 2.Qxc6#
- 1...Se4
- 2.Re5#
- 2.Qc4#
- 1...Sg4
- 2.Qc4#
- 2.e4#
- 1...Qd4!
- threat
- 1.Qg7?
- threat
- 2.Qe5#
- 1...Qxe3
- 2.Sxe3#
- 1...Rd6
- 2.Rxd6#
- 1...Qd4
- 2.Qxd4#
- 1...Qb8
- 2.Qd4#
- 1...Qc7
- 2.Qd4#
- 1...Sg4
- 2.e4#
- 1...Rxe6!
- threat
- 1.Qg8?
- threat
- 2.Rxa6#
- 2.Rb6#
- 2.Rd6#
- 1...Qxe3
- 2.Rd6#
- 1...Rxe6
- 2.Qxe6#
- 1...Rd6
- 2.Rxd6#
- 1...Qb6
- 2.Rxb6#
- 2.Rd6#
- 1...Qb8
- 2.Rd6#
- 1...Qa8
- 2.Rd6#
- 1...Ra1
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Ra2
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Ra3
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Ra4
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Ra5
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Rb6
- 2.Rxb6#
- 2.Rd6#
- 1...Rc6
- 2.Re5#
- 2.Rd6#
- 1...Qxd7!
- threat
- 1.Qa1?
- Keys
- 1.Qg4!
- threat
- 2.Qc4#
- 1...Sxg4
- 2.e4#
- 1...Qd4
- 2.Qxd4#
- 1...Qc5
- 2.Sf6#
- 1...Qc7
- 2.Qd4#
- 1...Ra4
- 2.Rd6#
- 1...Rc6
- 2.Re5#
- 1...Se4
- 2.Qxe4#
- threat
- 1.Qg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- Q(f);SBLOCK::S(F)
- R(e);N_GUARD::R1(E)
- R(e);SBLOCK::R1(E)
- R(e);N_GUARD::R1(E),XR(e)
- S(a);N_GUARD::P(C)
- Tries
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- Q(f);XP(C)::S(D),XQ(f)
- R(e);N_GUARD,XQ(A)::R1(E)
- R(e);N_GUARD::R1(E),XR(e)
- Q(f);N_GUARD::QAR1(A),XQ(f)
- Q(f);N_GUARD::QAR1(A)
- S(a);N_GUARD::P(C)
- Refutation
- R(e);XR(E)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(e);XR(E)::QAB1(A)
- Q(f);::S(F)
- Refutation
- Q(f);
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- Q(f);XP(C)::S(D),XQ(f)
- R(e);N_GUARD::R1(E),XR(e)
- Q(f);N_GUARD::QAR1(A),XQ(f)
- Q(f);N_GUARD::QAR1(A)
- S(a);N_GUARD::P(C)
- Refutation
- R(e);XR(E)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- Q(f);XP(C)::QAB(A)+R(E),DCHECK
- R(e);OGATE,P_SPINR(e),XR(E)::QAB1(A),XR(e)
- R(e);::QAB(A)+R(E),DCHECK,XR(e)
- Q(f);::QAB(A)+R(E),DCHECK
- Refutation
- Q(f);P_PINR(G),XS(F)
- Try
- Actual
- Q(A);
- Threat
- QAB1(A)
- Vars
- S(a);N_GUARD,XQ(A)::P(C)
- Q(f);N_GUARD::QAR1(A),XQ(f)
- Q(f);SBLOCK::S(F)
- Q(f);N_GUARD::QAR1(A)
- R(e);N_GUARD::R1(E)
- R(e);SBLOCK::R1(E)
- S(a);N_GUARD::QAB1(A),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).