MESON Chess Problem Database
Problem Display
PID: 243496 (3r4/1pBn3p/B1p1N1nK/R4Ppb/P2Nk3/1Q4q1/2pPpR2/2r5 w - - 0 1)
Buchwald, Julius
Arbejder-Skak, 1952
#2
11 + 13
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxf2
- 2.Bd3#
- 2.Qd3#
- 1...Qh2
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 1...Qf4
- 2.Bd3#
- 2.Qd3#
- 1...Qh4
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 1...Qe5
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 1...Qd6
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 1...Qxc7
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 1...Qg1
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 1...Qg2
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 1...Qd3
- 2.Bxd3#
- 2.Qxd3#
- 1...Qe3
- 2.Qxe3#
- 1...Qg4
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 1...Bf3
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 1...c5
- 2.Bxb7#
- 2.Qxb7#
- 1...Qxf2
- Tries
- 1.Sxe2?
- threat
- 2.Sxg3#
- 2.Qc4#
- 2.Qb4#
- 1...Qxf2
- 2.Sxg5#
- 2.Qd3#
- 1...Qxc7
- 2.Sc3#
- 2.Sxg5#
- 2.Bd3#
- 2.Qc4#
- 2.Qd3#
- 2.Qe3#
- 2.Qb4#
- 1...Qxb3
- 2.Sxg5#
- 1...bxa6
- 2.Sxg3#
- 2.Qc4#
- 1...Qh2
- 2.Sc3#
- 2.Sxg5#
- 2.Bd3#
- 2.Qc4#
- 2.Qd3#
- 2.Qe3#
- 2.Qb4#
- 1...Qf4
- 2.Sc3#
- 2.Bd3#
- 2.Qc4#
- 2.Qd3#
- 2.Qb4#
- 1...Qh4
- 2.Sc3#
- 2.Bd3#
- 2.Qc4#
- 2.Qd3#
- 2.Qe3#
- 2.Qb4#
- 1...Qe5
- 2.Sxg5#
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 1...Qd6
- 2.Sc3#
- 2.Sxg5#
- 2.Qe3#
- 1...Qg1
- 2.Sc3#
- 2.Bd3#
- 2.Qc4#
- 2.Qd3#
- 2.Qe3#
- 2.Qb4#
- 1...Qg2
- 2.Sc3#
- 2.Bd3#
- 2.Qc4#
- 2.Qd3#
- 2.Qe3#
- 2.Qb4#
- 1...Qc3
- 2.Sxc3#
- 2.Sxg5#
- 1...Qd3
- 2.Sxg5#
- 2.Bxd3#
- 2.Qxd3#
- 1...Qe3
- 2.Qxe3#
- 1...Qf3
- 2.Sxg5#
- 2.Qc4#
- 2.Qb4#
- 1...Qh3
- 2.Sxg5#
- 2.Qc4#
- 2.Qb4#
- 1...Qg4
- 2.Sc3#
- 2.Bd3#
- 2.Qc4#
- 2.Qd3#
- 2.Qe3#
- 2.Qb4#
- 1...Rb1
- 2.Sxg3#
- 2.Qc4#
- 1...Rg1
- 2.Qc4#
- 2.Qb4#
- 1...Sge5
- 2.Sxg3#
- 1...Sc5
- 2.Sxg3#
- 2.Sxc5#
- 1...Sde5
- 2.Sxg3#
- 2.Sc5#
- 1...Sb6
- 2.Sxg3#
- 2.Sc5#
- 1...Sf6
- 2.Sxg3#
- 2.Sc5#
- 1...Sb8
- 2.Sxg3#
- 2.Sc5#
- 1...Sdf8
- 2.Sxg3#
- 2.Sc5#
- 1...c5
- 2.Sxg3#
- 2.Bxb7#
- 2.Qc4#
- 2.Qxb7#
- 1...b5
- 2.Sxg3#
- 1...Bxe2!
- threat
- 1.Sxc6?
- threat
- 2.Qc4#
- 2.Qd5#
- 2.Qb4#
- 1...Qxf2
- 2.Sxg5#
- 2.Qd5#
- 2.Qd3#
- 1...Qxb3
- 2.Sxg5#
- 1...bxa6
- 2.Qc4#
- 2.Qd5#
- 1...bxc6
- 2.Qc4#
- 2.Qb4#
- 1...Qe5
- 2.Sxg5#
- 2.Bd3#
- 2.Qd3#
- 2.Qe3#
- 1...Qd6
- 2.Sxg5#
- 2.Qe3#
- 1...Qc3
- 2.Sxg5#
- 2.Qd5#
- 1...Qd3
- 2.Sxg5#
- 2.Bxd3#
- 2.Qxd3#
- 1...Qe3
- 2.Qd5#
- 2.Qxe3#
- 1...Rb1
- 2.Qc4#
- 2.Qd5#
- 1...Sf4
- 2.Qc4#
- 2.Qb4#
- 1...Sge5
- 2.Qd5#
- 1...Se7
- 2.Qc4#
- 2.Qb4#
- 1...Sc5
- 2.Sxc5#
- 1...Sde5
- 2.Sc5#
- 1...Sb6
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sdf8
- 2.Sc5#
- 1...b5!
- threat
- 1.Sc5+?
- 1...Kxd4
- 2.Qc4#
- 1...Sxc5!
- 1...Kxd4
- 1.Sxg5+?
- 1...Kxd4
- 2.Qc4#
- 2.Qb4#
- 1...Qxg5+!
- 1...Kxd4
- 1.Rxe2+?
- 1...Qe3
- 2.Bd3#
- 2.Rxe3#
- 2.Qd3#
- 2.Qxe3#
- 2.d3#
- 1...Bxe2!
- 1...Qe3
- 1.Qxc2+?
- 1...Qd3
- 2.Bxd3#
- 2.Qxd3#
- 1...Rxc2!
- 1...Qd3
- 1.d3+?
- 1...Qxd3
- 2.Qxd3#
- 1...Ke3!
- 1...Qxd3
- 1.Sxe2?
- Keys
- 1.Sb5!
- threat
- 2.Qc4#
- 1...Qxf2
- 2.Sd6#
- 1...Qxc7
- 2.Sc3#
- 1...Qxb3
- 2.Sd6#
- 1...cxb5
- 2.Bxb7#
- 1...Qf4
- 2.Sc3#
- 1...Qd6
- 2.Sc3#
- 2.Sxd6#
- 1...Qc3
- 2.Sxc3#
- 2.Sd6#
- 1...Qf3
- 2.Sd6#
- 1...Bf3
- 2.Sc3#
- 1...Sf4
- 2.Sd6#
- 1...Qe5
- 2.Sxg5#
- 1...Qd3
- 2.Sxg5#
- 1...Qe3
- 2.Sd6#
- 1...Sge5
- 2.Sd6#
- 1...Sc5
- 2.Sxc5#
- 1...Sde5
- 2.Sc5#
- 1...Sb6
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sdf8
- 2.Sc5#
- threat
- 1.Sb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 17
- REMOVED MATES = 0
- Sets
- Q(d);N_GUARD::QAR1(C),XQ(d)
- Tries
- Try
- S(E);XP(c)
- Threat
- DUALS(3)
- Vars
- Q(d);N_GUARD,XQ(C)::S(I),XP(f)
- Q(d);N_GUARD::QAR1(C),XQ(d)
- S(i);::S(E),XQ(d)
- P(j);::S(E),XQ(d)
- Refutation
- B(g);XS(E)
- Try
- S(E);XP(h)
- Threat
- DUALS(3)
- Vars
- Q(d);N_GUARD,XQ(C)::S(I),XP(f)
- S(i);::QAB1(C)
- S(k);N_GUARD::S(I),XS(k)
- S(k);N_GUARD::S(I)
- Refutation
- P(j);
- Try
- S(I);CHECK
- Vars
- K(e);P-FLIGHT,XS(E)::QAR1(C)
- Refutation
- S(k);XS(I)
- Try
- S(I);CHECK,XP(f)
- Refutation
- Q(d);CHECK,XS(I)
- Try
- R(B);CHECK,XP(c)
- Refutation
- B(g);XR(B)
- Try
- Q(C);CHECK,XP(b)
- Refutation
- R(a);XQ(C)
- Try
- P(A);CHECK
- Vars
- Q(d);OGATE,XP(A)::QAB1(C),XQ(d)
- Refutation
- K(e);P-FLIGHT
- Try
- Actual
- S(E);
- Threat
- QAR2(C)
- Vars
- Q(d);N_GUARD,XR(B)::S(E)
- Q(d);N_GUARD,XB(K)::S(E)
- Q(d);N_GUARD,XQ(C)::S(E)
- P(h);OGATEB,XS(E)::B(H),XP(j)
- Q(d);N_GUARD::S(E)
- B(g);S_CUTQ(d)::S(E)
- S(i);S_CUTQ(d)::S(E)
- Q(d);N_GUARD::S(I),XP(f)
- S(k);N_GUARD::S(I),XS(k)
- S(k);N_GUARD::S(I)
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).