MESON Chess Problem Database
Problem Display
PID: 249922 (1Q6/r2P4/3P1p1K/NbpBkPP1/3R1pP1/Bn1Pp3/8/2RqN3 w - - 0 1)
Laabs, Hans-Ulrich
1st HM., Deutsche Schachzeitung, 1967
#2
14 + 9
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qc2
- 2.Sf3#
- 1...Qf3
- 2.Sxf3#
- 1...Qxc1
- 2.Sf3#
- 1...Qd2
- 2.Sf3#
- 1...Qxd3
- 2.Sf3#
- 1...Bxd3
- 2.Sc6#
- 1...Bc4
- 2.Sc6#
- 1...Ba6
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...e2
- 2.Sf3#
- 1...Qc2
- Tries
- 1.Bh1?
- threat
- 2.Rd5#
- 1...Kxd4
- 2.Bb2#
- 1...Qxd3
- 2.Sf3#
- 1...Sxd4
- 2.Rxc5#
- 1...cxd4
- 2.Qe8#
- 1...fxg5
- 2.Qh8#
- 1...Qf3
- 2.Sxf3#
- 1...Bc4
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...f3!
- threat
- 1.Bg2?
- threat
- 2.Rd5#
- 1...Kxd4
- 2.Bb2#
- 1...Qxd3
- 2.Sf3#
- 1...Sxd4
- 2.Rxc5#
- 1...cxd4
- 2.Qe8#
- 1...fxg5
- 2.Qh8#
- 1...Qf3
- 2.Sxf3#
- 1...Bc4
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...f3!
- threat
- 1.Bxb3?
- threat
- 2.Re4#
- 2.Rd5#
- 1...Kxd4
- 2.Bb2#
- 1...Qxb3
- 2.Sf3#
- 1...Qxg4
- 2.Rd5#
- 1...Qxd3
- 2.Sf3#
- 1...Bxd3
- 2.Sc6#
- 1...cxd4
- 2.Rc5#
- 2.Qxb5#
- 2.Qe8#
- 1...fxg5
- 2.Qh8#
- 1...f3
- 2.Re4#
- 1...Qf3
- 2.Sxf3#
- 1...Rc7
- 2.Rd5#
- 1...Bc4
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...c4!
- threat
- 1.Bf3?
- threat
- 2.Rd5#
- 1...Kxd4
- 2.Bb2#
- 1...Qxf3
- 2.Sxf3#
- 1...Sxd4
- 2.Rxc5#
- 1...cxd4
- 2.Qe8#
- 1...fxg5
- 2.Qh8#
- 1...Bc4
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Qxd3!
- threat
- 1.Bc4?
- threat
- 2.Re4#
- 2.Rd5#
- 1...Kxd4
- 2.Bb2#
- 1...Qxg4
- 2.Rd5#
- 1...Qxd3
- 2.Sf3#
- 1...Bxc4
- 2.Sc6#
- 1...cxd4
- 2.Qe8#
- 1...fxg5
- 2.Qh8#
- 1...f3
- 2.Re4#
- 1...Qf3
- 2.Sxf3#
- 1...Rc7
- 2.Rd5#
- 1...Bc6
- 2.Sxc6#
- 1...Sd2
- 2.Rd5#
- 1...Sxd4!
- threat
- 1.Be4?
- threat
- 2.Rd5#
- 1...Kxd4
- 2.Bb2#
- 1...Qxd3
- 2.Sf3#
- 1...Bxd3
- 2.Sc6#
- 1...Sxd4
- 2.Rxc5#
- 1...cxd4
- 2.Qe8#
- 1...fxg5
- 2.Qh8#
- 1...Bc4
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...f3!
- threat
- 1.Bc6?
- threat
- 2.Re4#
- 2.Rd5#
- 1...Kxd4
- 2.Bb2#
- 1...Qxg4
- 2.Rd5#
- 1...Qxd3
- 2.Sf3#
- 1...Bxc6
- 2.Sxc6#
- 1...Sxd4
- 2.Rxc5#
- 1...cxd4
- 2.Qe8#
- 1...fxg5
- 2.Qh8#
- 1...f3
- 2.Re4#
- 1...Qf3
- 2.Sxf3#
- 1...Rc7
- 2.Rd5#
- 1...Bc4
- 2.Re4#
- 1...Sd2
- 2.Rd5#
- 1...Bxd3!
- threat
- 1.Be6?
- threat
- 2.Re4#
- 2.Rd5#
- 1...Kxd4
- 2.Bb2#
- 1...Qxd3
- 2.Sf3#
- 1...Bxd3
- 2.Sc6#
- 1...Sxd4
- 2.Rxc5#
- 1...fxg5
- 2.Qh8#
- 1...f3
- 2.Re4#
- 1...Qf3
- 2.Sxf3#
- 1...Rc7
- 2.Rd5#
- 1...Bc4
- 2.Sc6#
- 2.Re4#
- 1...Bc6
- 2.Sxc6#
- 1...Sd2
- 2.Rd5#
- 1...cxd4!
- threat
- 1.Bb7?
- threat
- 2.Re4#
- 2.Rd5#
- 1...Kxd4
- 2.Bb2#
- 1...Qxg4
- 2.Rd5#
- 1...Qxd3
- 2.Sf3#
- 1...Bxd3
- 2.Sc6#
- 1...Sxd4
- 2.Rxc5#
- 1...cxd4
- 2.Qe8#
- 1...fxg5
- 2.Qh8#
- 1...f3
- 2.Re4#
- 1...Qf3
- 2.Sxf3#
- 1...Bc4
- 2.Sc6#
- 2.Re4#
- 1...Bc6
- 2.Sxc6#
- 1...Sd2
- 2.Rd5#
- 1...Rxb7!
- threat
- 1.Bg8?
- threat
- 2.Re4#
- 2.Rd5#
- 1...Kxd4
- 2.Bb2#
- 1...Qxg4
- 2.Rd5#
- 1...Qxd3
- 2.Sf3#
- 1...Bxd3
- 2.Sc6#
- 1...Sxd4
- 2.Rxc5#
- 1...cxd4
- 2.Qe8#
- 1...f3
- 2.Re4#
- 1...Qf3
- 2.Sxf3#
- 1...Rc7
- 2.Rd5#
- 1...Bc4
- 2.Sc6#
- 2.Re4#
- 1...Bc6
- 2.Sxc6#
- 1...Sd2
- 2.Rd5#
- 1...fxg5!
- threat
- 1.Qe8+?
- 1...Kxd4
- 2.Qe4#
- 1...Kxd6!
- 1...Kxd4
- 1.Bh1?
- Keys
- 1.Bf7!
- threat
- 2.Re4#
- 2.Rd5#
- 1...Kxd4
- 2.Bb2#
- 1...Qxg4
- 2.Rd5#
- 1...Qxd3
- 2.Sf3#
- 1...Bxd3
- 2.Sc6#
- 1...Sxd4
- 2.Rxc5#
- 1...cxd4
- 2.Qe8#
- 1...fxg5
- 2.Qh8#
- 1...f3
- 2.Re4#
- 1...Qf3
- 2.Sxf3#
- 1...Rc7
- 2.Rd5#
- 1...Bc4
- 2.Sc6#
- 2.Re4#
- 1...Bc6
- 2.Sxc6#
- 1...Sd2
- 2.Rd5#
- threat
- 1.Bf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 6
- Sets
- Q(a);N_GUARD::S(B)
- Q(a);N_GUARD::S(B),XQ(a)
- Q(a);N_GUARD,XR(A)::S(B)
- Q(a);N_GUARD,XP(D)::S(B)
- B(e);N_GUARD,XP(D)::S(G)
- B(e);N_GUARD::S(G)
- B(e);N_GUARD::S(G),XB(e)
- P(c);S_CUTQ(a)::S(B)
- Tries
- Try
- B(H);
- Threat
- R1(E)
- Vars
- K(g);OGATEB,S_FLIGHT,XR(E)::B(C)
- Q(a);N_GUARD,XP(D)::S(B)
- S(b);N_GUARD,SBLOCK,XR(E)::R(A),XP(f)
- P(f);SBLOCK,XR(E)::QAR(N)
- P(h);OGATEB,XP(J)::QAB(N)
- Q(a);N_GUARD::S(B),XQ(a)
- B(e);N_GUARD::S(G)
- B(e);N_GUARD::S(G),XB(e)
- Refutation
- P(d);
- Try
- B(H);
- Threat
- R1(E)
- Vars
- K(g);OGATEB,S_FLIGHT,XR(E)::B(C)
- Q(a);N_GUARD,XP(D)::S(B)
- S(b);N_GUARD,SBLOCK,XR(E)::R(A),XP(f)
- P(f);SBLOCK,XR(E)::QAR(N)
- P(h);OGATEB,XP(J)::QAB(N)
- Q(a);N_GUARD::S(B),XQ(a)
- B(e);N_GUARD::S(G)
- B(e);N_GUARD::S(G),XB(e)
- Refutation
- P(d);
- Try
- B(H);XS(b)
- Threat
- DUALS(2)
- Vars
- K(g);OGATEB,S_FLIGHT,XR(E)::B(C)
- Q(a);N_GUARD,XB(H)::S(B)
- Q(a);XP(F)::R1(E)
- Q(a);N_GUARD,XP(D)::S(B)
- B(e);N_GUARD,XP(D)::S(G)
- P(h);OGATEB,XP(J)::QAB(N)
- P(d);::R1(E)
- Q(a);N_GUARD::S(B),XQ(a)
- R(i);::R1(E)
- B(e);N_GUARD::S(G)
- B(e);N_GUARD::S(G),XB(e)
- Refutation
- P(f);
- Try
- B(H);
- Threat
- R1(E)
- Vars
- K(g);OGATEB,S_FLIGHT,XR(E)::B(C)
- Q(a);XB(H)::S(B),XQ(a)
- S(b);N_GUARD,SBLOCK,XR(E)::R(A),XP(f)
- P(f);SBLOCK,XR(E)::QAR(N)
- P(h);OGATEB,XP(J)::QAB(N)
- B(e);N_GUARD::S(G)
- B(e);N_GUARD::S(G),XB(e)
- Refutation
- Q(a);XP(D)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- K(g);OGATEB,S_FLIGHT,XR(E)::B(C)
- Q(a);XP(F)::R1(E)
- Q(a);N_GUARD,XP(D)::S(B)
- B(e);N_GUARD,XB(H)::S(G)
- P(f);SBLOCK,XR(E)::QAR(N)
- P(h);OGATEB,XP(J)::QAB(N)
- P(d);::R1(E)
- Q(a);N_GUARD::S(B),XQ(a)
- R(i);::R1(E)
- B(e);N_GUARD::S(G),XB(e)
- S(b);::R1(E)
- Refutation
- S(b);XR(E)
- Try
- B(H);
- Threat
- R1(E)
- Vars
- K(g);OGATEB,S_FLIGHT,XR(E)::B(C)
- Q(a);N_GUARD,XP(D)::S(B)
- B(e);N_GUARD,XP(D)::S(G)
- S(b);N_GUARD,SBLOCK,XR(E)::R(A),XP(f)
- P(f);SBLOCK,XR(E)::QAR(N)
- P(h);OGATEB,XP(J)::QAB(N)
- B(e);N_GUARD::S(G)
- B(e);N_GUARD::S(G),XB(e)
- Refutation
- P(d);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- K(g);OGATEB,S_FLIGHT,XR(E)::B(C)
- Q(a);XP(F)::R1(E)
- Q(a);N_GUARD,XP(D)::S(B)
- B(e);XB(H)::S(G),XB(e)
- S(b);N_GUARD,SBLOCK,XR(E)::R(A),XP(f)
- P(f);SBLOCK,XR(E)::QAR(N)
- P(h);OGATEB,XP(J)::QAB(N)
- P(d);::R1(E)
- Q(a);N_GUARD::S(B),XQ(a)
- R(i);::R1(E)
- B(e);::R1(E)
- S(b);::R1(E)
- Refutation
- B(e);XP(D)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- K(g);OGATEB,S_FLIGHT,XR(E)::B(C)
- Q(a);N_GUARD,XP(D)::S(B)
- B(e);N_GUARD,XP(D)::S(G)
- S(b);N_GUARD,SBLOCK,XR(E)::R(A),XP(f)
- P(h);OGATEB,XP(J)::QAB(N)
- P(d);::R1(E)
- Q(a);N_GUARD::S(B),XQ(a)
- R(i);::R1(E)
- B(e);N_GUARD::S(G),XB(e)
- S(b);::R1(E)
- Refutation
- P(f);XR(E)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- K(g);OGATEB,S_FLIGHT,XR(E)::B(C)
- Q(a);XP(F)::R1(E)
- Q(a);N_GUARD,XP(D)::S(B)
- B(e);N_GUARD,XP(D)::S(G)
- S(b);N_GUARD,SBLOCK,XR(E)::R(A),XP(f)
- P(f);SBLOCK,XR(E)::QAR(N)
- P(h);OGATEB,XP(J)::QAB(N)
- P(d);::R1(E)
- Q(a);N_GUARD::S(B),XQ(a)
- B(e);N_GUARD::S(G),XB(e)
- S(b);::R1(E)
- Refutation
- R(i);XB(H)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- K(g);OGATEB,S_FLIGHT,XR(E)::B(C)
- Q(a);XP(F)::R1(E)
- Q(a);N_GUARD,XP(D)::S(B)
- B(e);N_GUARD,XP(D)::S(G)
- S(b);N_GUARD,SBLOCK,XR(E)::R(A),XP(f)
- P(f);SBLOCK,XR(E)::QAR(N)
- P(d);::R1(E)
- Q(a);N_GUARD::S(B),XQ(a)
- R(i);::R1(E)
- B(e);N_GUARD::S(G),XB(e)
- S(b);::R1(E)
- Refutation
- P(h);XP(J)
- Try
- Q(N);CHECK
- Vars
- K(g);OGATE,S_FLIGHT,XR(E)::QAR1(N)
- Refutation
- K(g);P_SPINP(f),S_FLIGHT,XP(K)
- Try
- Actual
- B(H);
- Threat
- DUALS(2)
- Vars
- K(g);OGATEB,S_FLIGHT,XR(E)::B(C)
- Q(a);XP(F)::R1(E)
- Q(a);N_GUARD,XP(D)::S(B)
- B(e);N_GUARD,XP(D)::S(G)
- S(b);N_GUARD,SBLOCK,XR(E)::R(A),XP(f)
- P(f);SBLOCK,XR(E)::QAR(N)
- P(h);OGATEB,XP(J)::QAB(N)
- P(d);::R1(E)
- Q(a);N_GUARD::S(B),XQ(a)
- R(i);::R1(E)
- B(e);N_GUARD::S(G),XB(e)
- S(b);::R1(E)
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).