MESON Chess Problem Database
Problem Display
PID: 204366 (1NN1nqn1/p6r/8/R1PkP3/2p2PB1/K3B3/3P4/1Q6 w - - 0 1)
Lindeberg, Martin F
Schackvarlden, 1925
#2
11 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxc5+
- 2.Rxc5#
- 1...Qd6
- 2.cxd6#
- 1...Qh6
- 2.c6#
- 1...Qg7
- 2.c6#
- 1...Qxf4
- 2.c6#
- 1...Qf6
- 2.c6#
- 1...Qf7
- 2.c6#
- 1...Rh1
- 2.Qxh1#
- 2.Qb7#
- 1...Rh2
- 2.Qb7#
- 1...Rh3
- 2.Qb7#
- 1...Rh4
- 2.Qb7#
- 1...Rh5
- 2.Qb7#
- 1...Rb7
- 2.Qh1#
- 2.Qxb7#
- 1...Rc7
- 2.Qh1#
- 1...Rd7
- 2.Qh1#
- 1...Re7
- 2.Qh1#
- 2.c6#
- 1...Rf7
- 2.Qh1#
- 1...Rg7
- 2.Qh1#
- 1...Rh8
- 2.Qb7#
- 1...Sd6
- 2.cxd6#
- 1...Sc7
- 2.Qb7#
- 1...Sg7
- 2.Qb7#
- 1...Sh6
- 2.Qh1#
- 1...Se7
- 2.c6#
- 1...c3
- 2.Qd3#
- 1...a6
- 2.Sb6#
- 1...Qxc5+
- Tries
- 1.Sd6?
- threat
- 2.Qe4#
- 2.c6#
- 1...Qxd6
- 2.cxd6#
- 1...Qxf4
- 2.c6#
- 1...Sxd6
- 2.cxd6#
- 1...Rb7
- 2.Qe4#
- 2.Qh1#
- 2.Qxb7#
- 1...Sef6
- 2.c6#
- 1...Sc7
- 2.Qe4#
- 2.Qb7#
- 1...Sgf6
- 2.c6#
- 1...Qf5!
- threat
- 1.Se7+?
- 1...Rxe7
- 2.Qh1#
- 2.c6#
- 1...Sxe7
- 2.c6#
- 1...Qxe7!
- 1...Rxe7
- 1.Qxh7?
- threat
- 2.Qh1#
- 2.Qb7#
- 1...Qxc5+
- 2.Rxc5#
- 1...Qxf4
- 2.c6#
- 1...c3
- 2.Qd3#
- 1...Qe7
- 2.Qh1#
- 1...Qd6
- 2.Qh1#
- 2.cxd6#
- 1...Qh6
- 2.c6#
- 1...Qg7
- 2.Qh1#
- 2.c6#
- 1...Qf6
- 2.Qh1#
- 2.c6#
- 1...Qf7
- 2.Qh1#
- 2.c6#
- 1...Sd6
- 2.cxd6#
- 1...Sef6
- 2.Qb7#
- 1...Sc7
- 2.Qh1#
- 1...Sg7
- 2.Qh1#
- 1...Sgf6
- 2.Qb7#
- 1...Sh6
- 2.Qb7#
- 1...Se7
- 2.Qh1#
- 2.c6#
- 1...Qf5!
- threat
- 1.Sd6?
- Keys
- 1.e6!
- 1...Qxc5+
- 2.Rxc5#
- 1...Qxf4
- 2.c6#
- 1...Qf5
- 2.Qxf5#
- 1...c3
- 2.Qd3#
- 1...Qe7
- 2.Qf5#
- 1...Qd6
- 2.cxd6#
- 1...Qh6
- 2.Qf5#
- 2.c6#
- 1...Qg7
- 2.c6#
- 1...Qf6
- 2.c6#
- 1...Qf7
- 2.c6#
- 1...Rh1
- 2.Qxh1#
- 2.Qb7#
- 1...Rh2
- 2.Qb7#
- 1...Rh3
- 2.Qb7#
- 1...Rh4
- 2.Qb7#
- 1...Rh5
- 2.Qb7#
- 1...Rh6
- 2.Qb7#
- 1...Rb7
- 2.Qh1#
- 2.Qxb7#
- 1...Rc7
- 2.Qh1#
- 1...Rd7
- 2.Qh1#
- 1...Re7
- 2.Qh1#
- 2.c6#
- 1...Rf7
- 2.Qh1#
- 1...Rg7
- 2.Qh1#
- 1...Rh8
- 2.Qb7#
- 1...Sd6
- 2.cxd6#
- 1...Sef6
- 2.Qf5#
- 1...Sc7
- 2.Qb7#
- 1...Sg7
- 2.Qb7#
- 1...Sgf6
- 2.Qf5#
- 1...Sh6
- 2.Qh1#
- 1...Se7
- 2.c6#
- 1...a6
- 2.Sb6#
- 1...Qxc5+
- 1.e6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- Q(f);CHECK,OGATE,P_SPINQ(f),XP(H)::R1(G),XQ(f)
- Q(f);::R(G)+P(H),XQ(f)
- Q(f);N_PINP(H)::R(G)+P(H)
- Q(f);N_PINP(H),XP(E)::R(G)+P(H)
- R(d);N_GUARD::QAB(A)
- R(d);N_GUARD,P_PINB(D)::QAB(A)
- S(e);N_PINP(H)::R(G)+P(H),XS(e)
- S(e);S_CUTR(d)::QAB(A)
- S(g);S_CUTR(d)::QAB(A)
- S(g);N_PINP(H)::R(G)+P(H)
- P(a);N_GUARD::QAR2(A)
- P(c);N_GUARD::S(K)
- Tries
- Try
- S(K);N_SPINP(H)
- Threat
- DUALS(2)
- Vars
- Q(f);OGATE,P_PINP(H),XS(K)::R(G)+P(H),XQ(f)
- Q(f);XP(E)::R(G)+P(H)
- S(e);OGATE,XS(K)::R(G)+P(H),XS(e)
- S(e);::R(G)+P(H)
- S(g);::R(G)+P(H)
- Refutation
- Q(f);
- Try
- S(K);CHECK,N_SPINP(H)
- Vars
- S(g);XS(K)::R(G)+P(H)
- Refutation
- Q(f);P_PINP(H),XS(K)
- Try
- Q(A);XR(d)
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XP(H)::R1(G),XQ(f)
- Q(f);N_PINP(H),XP(E)::R(G)+P(H)
- P(a);N_GUARD::QAR2(A)
- Q(f);::QAB(A)
- Q(f);N_PINP(H)::R(G)+P(H)
- S(e);N_PINP(H)::R(G)+P(H),XS(e)
- S(e);::QAB(A)
- S(g);::QAB(A)
- Refutation
- Q(f);N_PINP(H)
- Try
- Actual
- P(I);
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XP(H)::R1(G),XQ(f)
- Q(f);N_PINP(H),XP(E)::R(G)+P(H)
- Q(f);N_GUARD,N_PINP(H)::QAR2(A),XQ(f)
- P(a);N_GUARD::QAR2(A)
- Q(f);N_GUARD::QAR2(A)
- Q(f);::R(G)+P(H),XQ(f)
- Q(f);N_PINP(H)::R(G)+P(H)
- R(d);N_GUARD::QAB(A)
- R(d);N_GUARD,P_PINB(D)::QAB(A)
- S(e);N_PINP(H)::R(G)+P(H),XS(e)
- S(e);S_CUTQ(f)::QAR2(A)
- S(e);S_CUTR(d)::QAB(A)
- S(g);S_CUTQ(f)::QAR2(A)
- S(g);S_CUTR(d)::QAB(A)
- S(g);N_PINP(H)::R(G)+P(H)
- P(c);N_GUARD::S(K)
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).