MESON Chess Problem Database
Problem Display
PID: 232189 (1bb1B2B/2p4Q/2P1N2K/2Pk2P1/1p6/1p3Pnn/1P1P4/2R5 w - - 0 1)
Willemson, Martin
Deutsche Schachzeitung, 1928
#2
12 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kxe6
- 2.Qf7#
- 1...Ba7
- 2.Sxc7#
- 1...Ba6
- 2.Qd7#
- 1...Bxe6
- 2.Qd3#
- 1...Bb7
- 2.Qd7#
- 1...Bd7
- 2.Qxd7#
- 1...Sf1
- 2.Qe4#
- 2.Qf5#
- 1...Sh1
- 2.Qe4#
- 2.Qf5#
- 1...Se2
- 2.Qe4#
- 2.Qf5#
- 1...Se4
- 2.Qxe4#
- 2.Qf5#
- 1...Sf5+
- 2.Qxf5#
- 1...Sh5
- 2.Qe4#
- 2.Qf5#
- 1...Sg1
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sxg5
- 2.Sf4#
- 1...Kxe6
- Tries
- 1.Bd7?
- threat
- 2.Qd3#
- 1...Sf5+
- 2.Qxf5#
- 1...Bxd7
- 2.Qxd7#
- 1...Se2
- 2.Qe4#
- 2.Qf5#
- 1...Se4
- 2.Qxe4#
- 2.Qf5#
- 2.fxe4#
- 1...Sf2
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Ba6!
- threat
- 1.Rc2?
- 1...Sf5+
- 2.Qxf5#
- 1...Kxe6
- 2.Qf7#
- 1...Bxe6
- 2.Qd3#
- 1...Sxg5
- 2.Sf4#
- 1...Bd7
- 2.Qxd7#
- 1...Ba7
- 2.Sxc7#
- 1...Ba6
- 2.Qd7#
- 1...Bb7
- 2.Qd7#
- 1...Sf1
- 2.Qe4#
- 2.Qf5#
- 1...Sh1
- 2.Qe4#
- 2.Qf5#
- 1...Se2
- 2.Qe4#
- 2.Qf5#
- 1...Se4
- 2.Qxe4#
- 2.Qf5#
- 1...Sh5
- 2.Qe4#
- 2.Qf5#
- 1...Sg1
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...bxc2!
- 1...Sf5+
- 1.Rc3?
- 1...Sf5+
- 2.Qxf5#
- 1...Kxe6
- 2.Qf7#
- 1...Bxe6
- 2.Qd3#
- 1...Sxg5
- 2.Sf4#
- 1...Bd7
- 2.Qxd7#
- 1...Ba7
- 2.Sxc7#
- 1...Ba6
- 2.Qd7#
- 1...Bb7
- 2.Qd7#
- 1...Sf1
- 2.Qe4#
- 2.Qf5#
- 1...Sh1
- 2.Qe4#
- 2.Qf5#
- 1...Se2
- 2.Qe4#
- 2.Qf5#
- 1...Se4
- 2.Qxe4#
- 2.Qf5#
- 1...Sh5
- 2.Qe4#
- 2.Qf5#
- 1...Sg1
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...bxc3!
- 1...Sf5+
- 1.Qf7?
- threat
- 2.Sf4#
- 2.Sxc7#
- 1...Sf5+
- 2.Qxf5#
- 1...Bd7
- 2.Qxd7#
- 1...Sf4
- 2.Sxf4#
- 2.Sxc7#
- 1...Bxe6!
- threat
- 1.Qg7?
- threat
- 2.Qe5#
- 1...Kxe6
- 2.Qe5#
- 2.Qf7#
- 1...Bd7
- 2.Qxd7#
- 1...Sf5+!
- threat
- 1.d3?
- 1...Sf5+
- 2.Qxf5#
- 1...Kxe6
- 2.Qf7#
- 1...Sxg5
- 2.Sf4#
- 1...Bd7
- 2.Qxd7#
- 1...Ba7
- 2.Sxc7#
- 1...Ba6
- 2.Qd7#
- 1...Bb7
- 2.Qd7#
- 1...Sf1
- 2.Qe4#
- 2.Qf5#
- 1...Sh1
- 2.Qe4#
- 2.Qf5#
- 1...Se2
- 2.Qe4#
- 2.Qf5#
- 1...Se4
- 2.Qxe4#
- 2.Qf5#
- 1...Sh5
- 2.Qe4#
- 2.Qf5#
- 1...Sg1
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Bxe6!
- 1...Sf5+
- 1.d4?
- 1...Sf5+
- 2.Qxf5#
- 1...Kxe6
- 2.Qf7#
- 1...Sxg5
- 2.Sf4#
- 1...Bd7
- 2.Qxd7#
- 1...Ba7
- 2.Sxc7#
- 1...Ba6
- 2.Qd7#
- 1...Bb7
- 2.Qd7#
- 1...Sf1
- 2.Qe4#
- 2.Qf5#
- 1...Sh1
- 2.Qe4#
- 2.Qf5#
- 1...Se2
- 2.Qe4#
- 2.Qf5#
- 1...Se4
- 2.Qxe4#
- 2.Qf5#
- 1...Sh5
- 2.Qe4#
- 2.Qf5#
- 1...Sg1
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Bxe6!
- 1...Sf5+
- 1.Bd7?
- Keys
- 1.Bf6!
- 1...Sf5+
- 2.Qxf5#
- 1...Kxe6
- 2.Bf7#
- 1...Bxe6
- 2.Qd3#
- 1...Sxg5
- 2.Sf4#
- 1...Bd7
- 2.Qxd7#
- 1...Ba7
- 2.Sxc7#
- 1...Ba6
- 2.Qd7#
- 1...Bb7
- 2.Qd7#
- 1...Sf1
- 2.Qe4#
- 2.Qf5#
- 1...Sh1
- 2.Qe4#
- 2.Qf5#
- 1...Se2
- 2.Qe4#
- 2.Qf5#
- 1...Se4
- 2.Qxe4#
- 2.Qf5#
- 1...Sh5
- 2.Qe4#
- 2.Qf5#
- 1...Sg1
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sf5+
- 1.Bf6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(e);OGATEB,S_FLIGHT,XS(H)::QAB1(J)
- B(g);N_GUARD::S(H),XP(f)
- B(h);N_GUARD::QAR2(J)
- B(h);SBLOCK,XS(H)::QAR2(J)
- B(h);N_GUARD::QAR2(J),XB(h)
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- S(c);N_GUARD::S(H)
- S(c);N_GUARD::S(H),XS(c)
- S(c);N_GUARD,XP(F)::S(H)
- Tries
- Try
- B(K);
- Threat
- QAR2(J)
- Vars
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- B(h);OGATE,XB(K)::QAR2(J),XB(h)
- S(c);N_GUARD::S(H)
- S(c);N_GUARD::S(H),XS(c)
- Refutation
- B(h);
- Try
- R(A);
- Vars
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- K(e);OGATEB,S_FLIGHT,XS(H)::QAB1(J)
- B(h);SBLOCK,XS(H)::QAR2(J)
- S(c);N_GUARD,XP(F)::S(H)
- B(h);N_GUARD::QAR2(J),XB(h)
- B(g);N_GUARD::S(H),XP(f)
- B(h);N_GUARD::QAR2(J)
- S(c);N_GUARD::S(H)
- S(c);N_GUARD::S(H),XS(c)
- Refutation
- P(a);XR(A)
- Try
- R(A);
- Vars
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- K(e);OGATEB,S_FLIGHT,XS(H)::QAB1(J)
- B(h);SBLOCK,XS(H)::QAR2(J)
- S(c);N_GUARD,XP(F)::S(H)
- B(h);N_GUARD::QAR2(J),XB(h)
- B(g);N_GUARD::S(H),XP(f)
- B(h);N_GUARD::QAR2(J)
- S(c);N_GUARD::S(H)
- S(c);N_GUARD::S(H),XS(c)
- Refutation
- P(d);XR(A)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- B(h);N_GUARD::QAR2(J),XB(h)
- Refutation
- B(h);P_SPINB(h),XS(H)
- Try
- Q(J);
- Threat
- QAR1(J)
- Vars
- B(h);N_GUARD::QAR2(J),XB(h)
- Refutation
- S(b);CHECK
- Try
- P(C);
- Vars
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- K(e);OGATEB,S_FLIGHT,XS(H)::QAB1(J)
- S(c);N_GUARD,XP(F)::S(H)
- B(h);N_GUARD::QAR2(J),XB(h)
- B(g);N_GUARD::S(H),XP(f)
- B(h);N_GUARD::QAR2(J)
- S(c);N_GUARD::S(H)
- S(c);N_GUARD::S(H),XS(c)
- Refutation
- B(h);XS(H)
- Try
- P(C);
- Vars
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- K(e);OGATEB,S_FLIGHT,XS(H)::QAB1(J)
- S(c);N_GUARD,XP(F)::S(H)
- B(h);N_GUARD::QAR2(J),XB(h)
- B(g);N_GUARD::S(H),XP(f)
- B(h);N_GUARD::QAR2(J)
- S(c);N_GUARD::S(H)
- S(c);N_GUARD::S(H),XS(c)
- Refutation
- B(h);XS(H)
- Try
- Actual
- B(L);
- Vars
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- K(e);OGATEB,S_FLIGHT,XS(H)::B(K)
- B(h);SBLOCK,XS(H)::QAR2(J)
- S(c);N_GUARD,XP(F)::S(H)
- B(h);N_GUARD::QAR2(J),XB(h)
- B(g);N_GUARD::S(H),XP(f)
- B(h);N_GUARD::QAR2(J)
- S(c);N_GUARD::S(H)
- S(c);N_GUARD::S(H),XS(c)
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).