MESON Chess Problem Database
Problem Display
PID: 257266 (6n1/R4pQN/Pp1pp3/1Kbk4/4p3/p2PP3/n5p1/B2N2R1 w - - 0 1)
Postma, Bernardus
Probleemblad, 1947
#2
10 + 11
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Bxe3
- 2.Sxe3#
- 1...Bb4
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Sc1
- 2.Sc3#
- 1...Sc3+
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sf6
- 2.Sxf6#
- 1...Sh6
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 1...exd3
- 2.Qxg2#
- 1...e5
- 2.Qxf7#
- 1...f5
- 2.Qb7#
- 1...f6
- 2.Qb7#
- 1...Bxe3
- Tries
- 1.Sf2?
- threat
- 2.dxe4#
- 1...exd3
- 2.Qxg2#
- 2.e4#
- 1...e5
- 2.Qxf7#
- 1...Sf6
- 2.Sxf6#
- 1...f5
- 2.Qb7#
- 1...Sc3+!
- threat
- 1.Sg5?
- threat
- 2.dxe4#
- 1...Sc3+
- 2.Sxc3#
- 1...exd3
- 2.e4#
- 1...f5
- 2.Qb7#
- 1...Sf6!
- threat
- 1.Bb2?
- 1...Sc3+
- 2.Sxc3#
- 1...Bxe3
- 2.Sxe3#
- 1...exd3
- 2.Qxg2#
- 1...e5
- 2.Qxf7#
- 1...Sf6
- 2.Sxf6#
- 1...Bb4
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Sc1
- 2.Sc3#
- 1...Sb4
- 2.Sc3#
- 1...Sh6
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 1...f5
- 2.Qb7#
- 1...f6
- 2.Qb7#
- 1...axb2!
- 1...Sc3+
- 1.Bd4?
- 1...Sc3+
- 2.Sxc3#
- 1...Bxd4
- 2.Qxd4#
- 1...exd3
- 2.Qxg2#
- 1...e5
- 2.Qxf7#
- 1...Sf6
- 2.Sxf6#
- 1...Sc1
- 2.Sc3#
- 1...Sb4
- 2.Sc3#
- 1...Sh6
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 1...f5
- 2.Qb7#
- 1...f6
- 2.Qb7#
- 1...Bb4!
- 1...Sc3+
- 1.Rxg2?
- 1...Sc3+
- 2.Sxc3#
- 1...Bxe3
- 2.Sxe3#
- 1...e5
- 2.Qxf7#
- 1...Sf6
- 2.Sxf6#
- 1...Bb4
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Sc1
- 2.Sc3#
- 1...Sb4
- 2.Sc3#
- 1...Sh6
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 1...f5
- 2.Qb7#
- 1...f6
- 2.Qb7#
- 1...exd3!
- 1...Sc3+
- 1.Rd7?
- threat
- 2.Qe5#
- 1...Sc3+
- 2.Sxc3#
- 1...e5
- 2.Qxe5#
- 2.Qxf7#
- 1...Sf6
- 2.Sxf6#
- 1...Bd4
- 2.Qxd4#
- 1...f6!
- threat
- 1.Rxf7?
- 1...Sc3+
- 2.Sxc3#
- 1...Bxe3
- 2.Sxe3#
- 1...exd3
- 2.Qxg2#
- 1...Bb4
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Sc1
- 2.Sc3#
- 1...Sb4
- 2.Sc3#
- 1...Sf6
- 2.Sxf6#
- 1...Sh6
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 1...e5!
- 1...Sc3+
- 1.Qc3?
- threat
- 2.Qb3#
- 2.Qc4#
- 1...exd3
- 2.Qc4#
- 1...Bd4
- 2.Qxd4#
- 1...Sc1
- 2.Qc4#
- 1...Sxc3+!
- threat
- 1.Qxg2?
- threat
- 2.Qxe4#
- 2.Qxa2#
- 2.dxe4#
- 1...Bd4
- 2.Qxe4#
- 1...e5
- 2.Qxa2#
- 1...Sc1
- 2.Qxe4#
- 2.dxe4#
- 1...Sb4
- 2.Qxe4#
- 2.dxe4#
- 1...Sf6
- 2.Sxf6#
- 2.Qxa2#
- 1...f5
- 2.Qxa2#
- 1...Sc3+!
- threat
- 1.d4?
- 1...Sc3+
- 2.Sxc3#
- 1...Bxd4
- 2.Qxd4#
- 1...e5
- 2.Qxf7#
- 1...f5
- 2.Qb7#
- 1...Sc1
- 2.Sc3#
- 1...Sb4
- 2.Sc3#
- 1...Sf6
- 2.Sxf6#
- 1...Sh6
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 1...f6
- 2.Qb7#
- 1...Bb4!
- 1...Sc3+
- 1.Sf2?
- Keys
- 1.Ra8!
- 1...Sc3+
- 2.Sxc3#
- 1...Bxe3
- 2.Sxe3#
- 1...exd3
- 2.Qxg2#
- 1...e5
- 2.Qxf7#
- 1...f6
- 2.Qb7#
- 1...Bb4
- 2.Qd4#
- 1...Bd4
- 2.Qxd4#
- 1...Sc1
- 2.Sc3#
- 1...Sb4
- 2.Sc3#
- 1...Sf6
- 2.Sxf6#
- 1...Sh6
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 1...f5
- 2.Qb7#
- 1...Sc3+
- 1.Ra8!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(e);XP(E)::S(B),XB(e)
- B(e);N_GUARD::QAR1(I)
- B(e);N_GUARD::QAR1(I),XB(e)
- S(a);N_GUARD::S(B)
- S(a);CHECK,N_GUARD::S(B),XS(a)
- S(k);N_GUARD::S(J),XS(k)
- S(k);N_GUARD::S(J)
- P(d);OGATEB,XP(D)::QAB(I),XP(b)
- P(i);OGATEB::QAB(I),XP(j)
- P(j);OGATE::QAB(I)
- Tries
- Try
- S(B);
- Threat
- P(D),XP(d)
- Vars
- P(i);OGATEB::QAB(I),XP(j)
- S(k);N_GUARD::S(J),XS(k)
- P(j);OGATE::QAB(I)
- Refutation
- S(a);CHECK
- Try
- S(J);
- Threat
- P(D),XP(d)
- Vars
- S(a);CHECK,N_GUARD::S(B),XS(a)
- P(d);OGATE,XP(D)::P(E)
- P(j);OGATE::QAB(I)
- Refutation
- S(k);
- Try
- B(A);
- Vars
- S(a);CHECK,N_GUARD::S(B),XS(a)
- B(e);XP(E)::S(B),XB(e)
- P(d);OGATEB,XP(D)::QAB(I),XP(b)
- P(i);OGATEB::QAB(I),XP(j)
- S(k);N_GUARD::S(J),XS(k)
- B(e);N_GUARD::QAR1(I)
- B(e);N_GUARD::QAR1(I),XB(e)
- S(a);N_GUARD::S(B)
- S(k);N_GUARD::S(J)
- P(j);OGATE::QAB(I)
- Refutation
- P(c);XB(A)
- Try
- B(A);
- Vars
- S(a);CHECK,N_GUARD::S(B),XS(a)
- B(e);OGATE,XB(A)::QAR1(I),XB(e)
- P(d);OGATEB,XP(D)::QAB(I),XP(b)
- P(i);OGATEB::QAB(I),XP(j)
- S(k);N_GUARD::S(J),XS(k)
- S(a);N_GUARD::S(B)
- S(k);N_GUARD::S(J)
- P(j);OGATE::QAB(I)
- Refutation
- B(e);
- Try
- R(C);XP(b)
- Vars
- S(a);CHECK,N_GUARD::S(B),XS(a)
- B(e);XP(E)::S(B),XB(e)
- P(i);OGATEB::QAB(I),XP(j)
- S(k);N_GUARD::S(J),XS(k)
- B(e);N_GUARD::QAR1(I)
- B(e);N_GUARD::QAR1(I),XB(e)
- S(a);N_GUARD::S(B)
- S(k);N_GUARD::S(J)
- P(j);OGATE::QAB(I)
- Refutation
- P(d);XP(D)
- Try
- R(H);P_PINP(h)
- Threat
- QAR1(I)
- Vars
- S(a);CHECK,N_GUARD::S(B),XS(a)
- S(k);N_GUARD::S(J),XS(k)
- B(e);N_GUARD::QAR1(I),XB(e)
- Refutation
- P(j);
- Try
- R(H);XP(j)
- Vars
- S(a);CHECK,N_GUARD::S(B),XS(a)
- B(e);XP(E)::S(B),XB(e)
- P(d);OGATEB,XP(D)::QAB(I),XP(b)
- B(e);N_GUARD::QAR1(I)
- B(e);N_GUARD::QAR1(I),XB(e)
- S(a);N_GUARD::S(B)
- S(k);N_GUARD::S(J),XS(k)
- S(k);N_GUARD::S(J)
- Refutation
- P(i);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- P(d);XP(D)::QAB1(I)
- B(e);N_GUARD::QAR1(I),XB(e)
- S(a);::QAB1(I)
- Refutation
- S(a);CHECK,XQ(I)
- Try
- Q(I);P_PINP(d),XP(b)
- Threat
- DUALS(3)
- Vars
- B(e);::QAB1(I),XP(d)
- P(i);::QAB(I),XS(a)
- P(j);::QAB(I),XS(a)
- Refutation
- S(a);CHECK
- Try
- P(D);
- Vars
- S(a);CHECK,N_GUARD::S(B),XS(a)
- B(e);OGATE,XP(D)::QAR1(I),XB(e)
- P(i);OGATEB::QAB(I),XP(j)
- P(j);OGATE::QAB(I)
- S(a);N_GUARD::S(B)
- S(k);N_GUARD::S(J),XS(k)
- S(k);N_GUARD::S(J)
- Refutation
- B(e);
- Try
- Actual
- R(H);
- Vars
- S(a);CHECK,N_GUARD::S(B),XS(a)
- B(e);XP(E)::S(B),XB(e)
- P(d);OGATEB,XP(D)::QAB(I),XP(b)
- P(i);OGATEB::QAB(I),XP(j)
- P(j);OGATE::QAB(I)
- B(e);N_GUARD::QAR1(I)
- B(e);N_GUARD::QAR1(I),XB(e)
- S(a);N_GUARD::S(B)
- S(k);N_GUARD::S(J),XS(k)
- S(k);N_GUARD::S(J)
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).