MESON Chess Problem Database
Problem Display
PID: 157278 (3R4/1bp2Kp1/8/3NkPB1/2p1P2r/rQ2P3/3N4/7n w - - 0 1)
Lukashev, Viktor Sergeevich
Best Problems, 2008
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qc3#
- 1...Ra2
- 2.Qc3#
- 1...Ra4
- 2.Qc3#
- 1...Ra5
- 2.Qc3#
- 1...Ra6
- 2.Qc3#
- 1...Ra7
- 2.Qc3#
- 1...Ra8
- 2.Qc3#
- 1...Rh2
- 2.Bf4#
- 1...Rh3
- 2.Bf4#
- 1...Rf4
- 2.Bxf4#
- 1...Rh5
- 2.Bf4#
- 1...Rh6
- 2.Bf4#
- 1...Rh7
- 2.Bf4#
- 1...Rh8
- 2.Bf4#
- 1...Bxd5+
- 2.Rxd5#
- 1...g6
- 2.Bf6#
- 1...Ra1
- Tries
- 1.Qxc4?
- threat
- 2.Sf3#
- 2.Qd4#
- 2.Qxc7#
- 1...Bxd5+
- 2.Rxd5#
- 2.Qxd5#
- 1...Rxe4
- 2.Qxe4#
- 1...Rc3
- 2.Sf3#
- 2.Qxc3#
- 2.Qd4#
- 1...Rd3
- 2.Sf3#
- 2.Qxc7#
- 1...Ra4
- 2.Sf3#
- 2.Qxc7#
- 1...Ra6
- 2.Sf3#
- 2.Qc3#
- 2.Qd4#
- 1...Rh3
- 2.Bf4#
- 2.Qd4#
- 2.Qxc7#
- 1...Rf4
- 2.Bxf4#
- 2.Qd4#
- 2.Qxc7#
- 2.exf4#
- 1...Rh6
- 2.Sf3#
- 2.Bf4#
- 2.Qd4#
- 1...Bc6
- 2.Sf3#
- 2.Qd4#
- 1...c5
- 2.Sf3#
- 1...c6
- 2.Sf3#
- 2.Qd4#
- 1...Rxe3!
- threat
- 1.Qb2+?
- 1...Rc3
- 2.Qxc3#
- 1...c3!
- 1...Rc3
- 1.Qxa3?
- threat
- 2.Re8#
- 2.Qe7#
- 2.Qc3#
- 1...Bxd5+
- 2.Rxd5#
- 1...Rh6
- 2.Bf4#
- 2.Qc3#
- 1...Rh8
- 2.Bf4#
- 2.Qe7#
- 2.Qc3#
- 1...Bc6
- 2.Qe7#
- 2.Qc3#
- 1...Bc8
- 2.Qc3#
- 1...c3
- 2.Re8#
- 2.Qe7#
- 2.Qxc3#
- 1...c5
- 2.Qc3#
- 1...Rxe4!
- threat
- 1.Qb6?
- threat
- 2.Re8#
- 2.Qd4#
- 2.Qxc7#
- 2.Qe6#
- 1...Bxd5+
- 2.Rxd5#
- 1...Rxe3
- 2.Re8#
- 1...Rxe4
- 2.Qe6#
- 1...Rd3
- 2.Re8#
- 2.Qxc7#
- 2.Qe6#
- 1...Ra6
- 2.Re8#
- 2.Qd4#
- 1...Ra8
- 2.Qd4#
- 2.Qxc7#
- 2.Qe6#
- 1...Rh6
- 2.Bf4#
- 2.Qd4#
- 1...Rh8
- 2.Bf4#
- 2.Qd4#
- 2.Qxc7#
- 2.Qe6#
- 1...Bc6
- 2.Qd4#
- 2.Qxc7#
- 1...Bc8
- 2.Qd4#
- 2.Qxc7#
- 1...c5
- 2.Re8#
- 2.Qc7#
- 2.Qd6#
- 2.Qe6#
- 1...c6
- 2.Qd4#
- 2.Qc7#
- 1...cxb6!
- threat
- 1.Qxc4?
- Keys
- 1.Se7!
- threat
- 2.Sg6#
- 1...Bd5+
- 2.Rxd5#
- 1...Rxe4
- 2.Sf3#
- 1...Bxe4
- 2.Sxc4#
- 1...Ra6
- 2.Qc3#
- 1...Rh6
- 2.Bf4#
- 1...g6
- 2.Sxg6#
- 2.Bf6#
- threat
- 1.Se7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 13
- Sets
- R(b);N_GUARD::QAB(B)
- R(d);N_GUARD::B(G)
- R(d);N_GUARD,P_PINP(F)::B(G),XR(d)
- B(f);CHECK,OGATE,XS(E)::R1(I),XB(f)
- P(h);N_GUARD::B(G)
- Tries
- Try
- Q(B);XP(c)
- Threat
- DUALS(3)
- Vars
- R(d);OGATE,XP(D)::QAR1(B),XR(d)
- P(g);::S(A)
- Refutation
- R(b);XP(C)
- Try
- Q(B);CHECK
- Vars
- R(b);N_GUARD,P_SPINR(b)::QAB(B),XR(b)
- Refutation
- P(c);P_SPINP(c)
- Try
- Q(B);XR(b)
- Threat
- DUALS(3)
- Vars
- B(f);CHECK,OGATE,XS(E)::R1(I),XB(f)
- B(f);::QAB(B)
- P(g);::QAB(B)
- Refutation
- R(d);XP(D)
- Try
- Q(B);
- Threat
- DUALS(4)
- Vars
- B(f);CHECK,OGATE,XS(E)::R1(I),XB(f)
- R(b);XP(C)::R(I)
- R(d);XP(D)::QAR1(B)
- Refutation
- P(g);XQ(B)
- Try
- Actual
- S(E);
- Threat
- S(E)
- Vars
- B(f);CHECK,N_GUARD::R1(I),XB(f)
- R(d);SBLOCK,XP(D)::S(A)
- B(f);SBLOCK,XP(D)::S(A),XP(c)
- R(b);N_GUARD::QAB(B)
- R(d);N_GUARD::B(G)
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).