MESON Chess Problem Database
Problem Display
PID: 247393 (2Q5/4r1bq/p6r/R1Pk1P2/K1N2R2/np1P1N1B/6P1/B7 w - - 0 1)
Lamba, Stelian
Stella Polaris, 1968
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxh3
- 2.Sb6#
- 1...Rh4
- 2.Sb6#
- 1...Rh5
- 2.Sb6#
- 1...Rb6
- 2.Sxb6#
- 1...Rf6
- 2.Rd4#
- 1...Re3
- 2.Sxe3#
- 1...Re5
- 2.Rd4#
- 1...Ra7
- 2.Se3#
- 1...Rb7
- 2.Se3#
- 1...Rd7
- 2.Se3#
- 1...Rf7
- 2.Se3#
- 1...Bd4
- 2.Rxd4#
- 1...Be5
- 2.Se3#
- 1...Bf6
- 2.Sb6#
- 1...Bf8
- 2.Rd4#
- 1...Sb1
- 2.c6#
- 1...Sc2
- 2.c6#
- 1...Sxc4
- 2.dxc4#
- 1...Rxh3
- Tries
- 1.Sfe5?
- threat
- 2.Se3#
- 2.Rd4#
- 1...Rxh3
- 2.Sb6#
- 2.Rd4#
- 2.Qc6#
- 1...Rxe5
- 2.Rd4#
- 1...Bxe5
- 2.Se3#
- 1...Sxc4
- 2.dxc4#
- 1...Rh4
- 2.Se3#
- 2.Sb6#
- 2.Qc6#
- 1...Sc2
- 2.c6#
- 1...Sb5
- 2.Se3#
- 1...b2!
- threat
- 1.Be5?
- threat
- 2.Se3#
- 2.Rd4#
- 1...Rxe5
- 2.Rd4#
- 1...Bxe5
- 2.Se3#
- 1...Sxc4
- 2.Rd4#
- 2.dxc4#
- 1...Rh4
- 2.Se3#
- 2.Sb6#
- 1...Sc2
- 2.c6#
- 1...Sb5
- 2.Se3#
- 1...Rc7!
- threat
- 1.Qb7+?
- 1...Rc6
- 2.Sb6#
- 1...Rxb7!
- 1...Rc6
- 1.Qd7+?
- 1...Rd6
- 2.Sb6#
- 2.Qxd6#
- 1...Rxd7!
- 1...Rd6
- 1.Qa8+?
- 1...Rc6
- 2.Sb6#
- 1...Rb7!
- 1...Rc6
- 1.f6?
- threat
- 2.Sb6#
- 2.Rd4#
- 1...Qxd3
- 2.Sb6#
- 1...Rxf6
- 2.Rd4#
- 1...Bxf6
- 2.Sb6#
- 1...Sxc4
- 2.Rd4#
- 2.dxc4#
- 1...Rc7
- 2.Qe6#
- 1...Rh4
- 2.Sb6#
- 1...Re4
- 2.Qb7#
- 2.Qd7#
- 2.Qa8#
- 1...Re6
- 2.Bxe6#
- 2.Rd4#
- 2.Qxe6#
- 1...Rb7
- 2.Se3#
- 2.Be6#
- 2.Rd4#
- 2.Qe6#
- 2.Qxb7#
- 1...Sc2
- 2.Sb6#
- 2.c6#
- 1...Sb5
- 2.Sb6#
- 1...Qe4!
- threat
- 1.Sfe5?
- Keys
- 1.Bf6!
- threat
- 2.Sb6#
- 2.Rd4#
- 1...Rxf6
- 2.Rd4#
- 1...Bxf6
- 2.Sb6#
- 1...Sxc4
- 2.Rd4#
- 2.dxc4#
- 1...Rc7
- 2.Qe6#
- 1...Rh4
- 2.Sb6#
- 1...Re4
- 2.Qb7#
- 2.Qd7#
- 2.Qa8#
- 1...Re6
- 2.Rd4#
- 2.Qxe6#
- 1...Rb7
- 2.Se3#
- 2.Rd4#
- 2.Qe6#
- 2.Qxb7#
- 1...Sc2
- 2.Sb6#
- 2.c6#
- 1...Sb5
- 2.Sb6#
- threat
- 1.Bf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 15
- Sets
- R(e);N_GUARD,XB(E)::S(G)
- R(e);N_GUARD::S(G)
- R(e);N_GUARD::S(G),XR(e)
- R(e);S_CUTB(g)::R1(H)
- R(f);N_GUARD::S(G),XR(f)
- R(f);S_CUTB(g)::R1(H)
- R(f);N_GUARD::S(G)
- B(g);N_GUARD::R1(H),XB(g)
- B(g);S_CUTR(f)::S(G)
- B(g);S_CUTR(e)::S(G)
- B(g);N_GUARD::R1(H)
- S(a);N_GUARD::R(I)+P(J)
- S(a);OGATE,XS(G)::P(C),XS(a)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(f);XS(D)::R1(H)
- B(g);XS(D)::S(G)
- S(a);OGATE,XS(G)::P(C),XS(a)
- S(a);N_GUARD::R(I)+P(J)
- S(a);::S(G)
- Refutation
- P(b);
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- R(f);XB(A)::R1(H)
- B(g);XB(A)::S(G)
- S(a);N_GUARD::R(I)+P(J)
- S(a);::S(G)
- Refutation
- R(f);
- Try
- Q(L);CHECK
- Vars
- R(e);P_SPINR(e)::S(G)
- Refutation
- R(f);XQ(L)
- Try
- Q(L);CHECK
- Refutation
- R(f);XQ(L)
- Try
- Q(L);CHECK
- Vars
- R(e);P_SPINR(e)::S(G)
- Refutation
- R(f);P_SPINR(f)
- Try
- P(K);
- Threat
- DUALS(2)
- Vars
- Q(h);XP(C)::S(G)
- R(e);XP(K)::R1(H)
- B(g);XP(K)::S(G)
- R(f);N_GUARD::QAB1(L)
- R(e);::S(G)
- S(a);::S(G)
- Refutation
- Q(h);P_PINS(G)
- Try
- Actual
- B(A);
- Threat
- DUALS(2)
- Vars
- R(e);XB(A)::R1(H)
- B(g);XB(A)::S(G)
- R(f);N_GUARD::QAB1(L)
- R(e);::S(G)
- S(a);::S(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).