MESON Chess Problem Database
Problem Display
PID: 170192 (K2b3R/2pp1Np1/BP6/3Np3/4P1kp/8/1qQBn1PP/3b4 w - - 0 1)
Boven, Dirk
Tages-Anzeiger, 1987
#2
11 + 10
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Sxe5#
- 1...Qa3
- 2.Sxe5#
- 1...Qb1
- 2.Sxe5#
- 1...Qa2
- 2.Sxe5#
- 1...Qxc2
- 2.Sxe5#
- 1...Qb3
- 2.Sxe5#
- 1...Qb4
- 2.Sxe5#
- 1...Qb5
- 2.Sxe5#
- 1...Qxb6
- 2.Sxe5#
- 1...Bxc2
- 2.Bxe2#
- 1...Sc3
- 2.Sxe5#
- 1...Sg3
- 2.h3#
- 1...Sd4
- 2.Sxe5#
- 1...Sf4
- 2.Se3#
- 1...d6
- 2.Bc8#
- 1...Qc1
- Tries
- 1.Bg5?
- threat
- 2.Se3#
- 2.Rxh4#
- 1...Qxb6
- 2.Rxh4#
- 1...Qc1
- 2.Rxh4#
- 1...Qa3
- 2.Rxh4#
- 1...Qc3
- 2.Rxh4#
- 1...Qd4
- 2.Rxh4#
- 1...Qb3
- 2.Rxh4#
- 1...h3
- 2.Se3#
- 2.Rh4#
- 1...Bxg5!
- threat
- 1.Qd3?
- threat
- 2.Qf3#
- 2.Qh3#
- 2.h3#
- 1...Qa3
- 2.Sxe5#
- 2.h3#
- 1...Qc3
- 2.h3#
- 1...Qb3
- 2.Sxe5#
- 2.h3#
- 1...Sc1
- 2.Qh3#
- 2.h3#
- 1...Sc3
- 2.Sxe5#
- 2.Qh3#
- 2.h3#
- 1...Sg3
- 2.h3#
- 1...Sd4
- 2.Sxe5#
- 2.Qh3#
- 2.h3#
- 1...Sf4
- 2.Se3#
- 1...h3
- 2.Qf3#
- 2.Qxh3#
- 2.gxh3#
- 1...Sg1!
- threat
- 1.Qa4?
- threat
- 2.Qxd7#
- 1...Qxb6
- 2.Sxe5#
- 1...Bxa4
- 2.Bxe2#
- 1...Qb5
- 2.Sxe5#
- 1...Sg3
- 2.h3#
- 1...Sd4
- 2.Sxe5#
- 1...Sf4
- 2.Se3#
- 1...d6
- 2.Bc8#
- 2.Qd7#
- 1...c6!
- threat
- 1.Qxb2?
- threat
- 2.Sxe5#
- 1...Sf4
- 2.Se3#
- 1...d6
- 2.Bc8#
- 1...Bf6!
- threat
- 1.Qc3?
- threat
- 2.Sxe5#
- 2.Qf3#
- 2.Qh3#
- 2.h3#
- 1...Qxd2
- 2.Qf3#
- 2.Qh3#
- 2.h3#
- 1...Sxc3
- 2.Sxe5#
- 1...Qa3
- 2.Sxe5#
- 2.h3#
- 1...Qb3
- 2.Sxe5#
- 2.h3#
- 1...Bf6
- 2.Qf3#
- 2.Qh3#
- 2.h3#
- 1...Sc1
- 2.Sxe5#
- 2.Qh3#
- 2.h3#
- 1...Sg1
- 2.Sxe5#
- 1...Sg3
- 2.Sxe5#
- 2.h3#
- 1...Sd4
- 2.Sxe5#
- 2.Qh3#
- 2.h3#
- 1...Sf4
- 2.Se3#
- 1...h3
- 2.Sxe5#
- 2.Qf3#
- 2.Qxh3#
- 2.gxh3#
- 1...d6
- 2.Bc8#
- 2.Qf3#
- 2.Qh3#
- 2.h3#
- 1...Qxc3!
- threat
- 1.Qxc7?
- threat
- 2.Qxd7#
- 1...Qxb6
- 2.Sxe5#
- 1...Qb5
- 2.Sxe5#
- 1...Ba4
- 2.Bxe2#
- 1...Sg3
- 2.h3#
- 1...Sd4
- 2.Sxe5#
- 1...Sf4
- 2.Se3#
- 1...d6
- 2.Bc8#
- 2.Qd7#
- 2.Qc8#
- 1...Bxc7!
- threat
- 1.Bg5?
- Keys
- 1.Qc6!
- threat
- 2.Qxd7#
- 1...Qxb6
- 2.Sxe5#
- 1...dxc6
- 2.Bc8#
- 1...Qb5
- 2.Sxe5#
- 1...Ba4
- 2.Bxe2#
- 1...Sg3
- 2.h3#
- 1...Sd4
- 2.Sxe5#
- 1...Sf4
- 2.Se3#
- 1...d6
- 2.Bc8#
- 2.Qd7#
- threat
- 1.Qc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(b);N_GUARD::S(I),XP(f)
- Q(b);N_GUARD,P_PINB(G)::S(I),XP(f)
- Q(b);N_GUARD,XQ(A)::S(I),XP(f)
- Q(b);N_GUARD,XP(H)::S(I),XP(f)
- B(a);N_GUARD,XQ(A)::B(G),XS(c)
- S(c);S_CUTQ(b)::S(I),XP(f)
- S(c);SBLOCK::P(D)
- S(c);SBLOCK::S(F)
- P(h);OGATEB::B(G)
- Tries
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- Q(b);XP(H)::R1(K),XP(e)
- Q(b);::R1(K),XP(e)
- Q(b);P_PINB(G)::R1(K),XP(e)
- Refutation
- B(j);XB(B)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- Q(b);::P(D)
- S(c);::P(D)
- S(c);SBLOCK::S(F)
- Refutation
- S(c);
- Try
- Q(A);
- Threat
- QAB(A),XP(h)
- Vars
- Q(b);N_GUARD,XP(H)::S(I),XP(f)
- B(a);N_GUARD,XQ(A)::B(G),XS(c)
- Q(b);N_GUARD::S(I),XP(f)
- S(c);SBLOCK::P(D)
- S(c);S_CUTQ(b)::S(I),XP(f)
- S(c);SBLOCK::S(F)
- Refutation
- P(g);
- Try
- Q(A);XQ(b)
- Threat
- S(I),XP(f)
- Vars
- S(c);SBLOCK::S(F)
- P(h);OGATEB::B(G)
- Refutation
- B(j);
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- S(c);XQ(A)::S(I),XP(f)
- S(c);::S(I),XP(f)
- S(c);SBLOCK::S(F)
- Refutation
- Q(b);XQ(A)
- Try
- Q(A);XP(g)
- Threat
- QAB(A),XP(h)
- Vars
- Q(b);N_GUARD,XP(H)::S(I),XP(f)
- Q(b);N_GUARD::S(I),XP(f)
- B(a);N_GUARD::B(G),XS(c)
- S(c);SBLOCK::P(D)
- S(c);S_CUTQ(b)::S(I),XP(f)
- S(c);SBLOCK::S(F)
- Refutation
- B(j);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- QAB(A),XP(h)
- Vars
- Q(b);N_GUARD,XP(H)::S(I),XP(f)
- P(h);OGATEB,XQ(A)::B(G)
- Q(b);N_GUARD::S(I),XP(f)
- B(a);N_GUARD::B(G),XS(c)
- S(c);SBLOCK::P(D)
- S(c);S_CUTQ(b)::S(I),XP(f)
- S(c);SBLOCK::S(F)
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).