MESON Chess Problem Database
Problem Display
PID: 3082 (5K2/6N1/5k1n/3Pp1pP/p1P3p1/Pbn3P1/1Q3N2/8 w - - 0 1)
Ellerman, Arnoldo
Source?, 1918
#2
9 + 8
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Qb6#
- 1...Ba2
- 2.Qb6#
- 1...Bc2
- 2.Qb6#
- 1...Bxc4
- 2.Qb6#
- 1...Sb1
- 2.Se4#
- 1...Sd1
- 2.Se4#
- 1...Sa2
- 2.Se4#
- 1...Se2
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sb5
- 2.Se4#
- 1...Sxd5
- 2.Se4#
- 1...Sf5
- 2.Sxg4#
- 2.Se8#
- 1...Sf7
- 2.Sxg4#
- 1...Sg8
- 2.Sxg4#
- 1...e4
- 2.Qxc3#
- 1...Bd1
- Tries
- 1.Qb1?
- threat
- 2.Se8#
- 2.Qg6#
- 1...Sxb1
- 2.Se4#
- 1...Sxd5
- 2.Se4#
- 2.Qg6#
- 1...Bc2
- 2.Qb6#
- 1...Se4
- 2.Sxe4#
- 1...Sf5
- 2.Sxg4#
- 2.Se8#
- 2.Qxf5#
- 1...e4!
- threat
- 1.Qc2?
- threat
- 2.Se8#
- 2.Qg6#
- 1...Sxd5
- 2.Se4#
- 2.Qg6#
- 1...e4
- 2.Qxc3#
- 1...Se4
- 2.Sxe4#
- 1...Sf5
- 2.Sxg4#
- 2.Se8#
- 2.Qxf5#
- 1...Bxc2!
- threat
- 1.Qxb3?
- threat
- 2.Qb6#
- 1...Sxd5
- 2.Se4#
- 1...e4
- 2.Qxc3#
- 1...Se4
- 2.Sxe4#
- 1...Sb5
- 2.Se4#
- 1...Sf5
- 2.Sxg4#
- 2.Se8#
- 1...Sf7
- 2.Sxg4#
- 1...axb3!
- threat
- 1.c5?
- 1...Sxd5
- 2.Se4#
- 1...e4
- 2.Qxc3#
- 1...Bd1
- 2.Qb6#
- 1...Ba2
- 2.Qb6#
- 1...Bc2
- 2.Qb6#
- 1...Bc4
- 2.Qb6#
- 1...Sb1
- 2.Se4#
- 1...Sd1
- 2.Se4#
- 1...Sa2
- 2.Se4#
- 1...Se2
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sb5
- 2.Se4#
- 1...Sf5
- 2.Sxg4#
- 2.Se8#
- 1...Sf7
- 2.Sxg4#
- 1...Sg8
- 2.Sxg4#
- 1...Bxd5!
- 1...Sxd5
- 1.Qb1?
- Keys
- 1.Sd3!
- 1...Bxc4
- 2.Qb6#
- 1...Sxd5
- 2.Qxe5#
- 1...Bd1
- 2.Qb6#
- 1...Ba2
- 2.Qb6#
- 1...Bc2
- 2.Qb6#
- 1...Sb1
- 2.Qxe5#
- 1...Sd1
- 2.Qxe5#
- 1...Sa2
- 2.Qxe5#
- 1...Se2
- 2.Qxe5#
- 1...Se4
- 2.Qxe5#
- 1...Sb5
- 2.Qxe5#
- 1...Sf5
- 2.Se8#
- 1...Sf7
- 2.Qf2#
- 1...Sg8
- 2.Qf2#
- 1...e4
- 2.Qxc3#
- 1...Bxc4
- 1.Sd3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(a);OGATE::QAR(A)
- B(a);OGATE,XP(E)::QAR(A)
- S(b);N_GUARD,P_SPINP(e)::S(B)
- S(b);N_GUARD,P_SPINP(e)::S(B),XS(b)
- S(b);N_GUARD,P_SPINP(e),XP(F)::S(B)
- S(h);N_GUARD::S(B),XP(d)
- P(e);OGATEB,P_SPINS(b)::QAB(A),XS(b)
- Tries
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,XQ(A)::S(B)
- B(a);OGATE::QAR(A)
- S(b);N_GUARD::S(B),XS(b)
- Refutation
- P(e);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(e);OGATEB::QAB(A),XS(b)
- S(b);N_GUARD::S(B),XS(b)
- Refutation
- B(a);XQ(A)
- Try
- Q(A);XB(a)
- Threat
- QAR(A)
- Vars
- S(b);N_GUARD,XP(F)::S(B)
- P(e);OGATEB::QAB(A),XS(b)
- S(b);N_GUARD::S(B),XS(b)
- S(b);N_GUARD::S(B)
- S(h);N_GUARD::S(B),XP(d)
- Refutation
- P(c);XQ(A)
- Try
- P(E);
- Vars
- S(b);N_GUARD,P_SPINP(e),XP(F)::S(B)
- P(e);OGATEB,P_SPINS(b)::QAB(A),XS(b)
- B(a);OGATE::QAR(A)
- S(b);N_GUARD,P_SPINP(e)::S(B)
- S(b);N_GUARD,P_SPINP(e)::S(B),XS(b)
- S(h);N_GUARD::S(B),XP(d)
- Refutation
- B(a);XP(F)
- Try
- Actual
- S(B);
- Vars
- B(a);OGATE,XP(E)::QAR(A)
- S(b);OGATE,P_SPINP(e),XP(F)::QAB1(A),XP(e)
- B(a);OGATE::QAR(A)
- S(b);OGATE,P_SPINP(e)::QAB1(A),XP(e)
- S(h);SBLOCK::S(H)
- S(h);N_GUARD::QAR(A)
- P(e);OGATEB,P_SPINS(b)::QAB(A),XS(b)
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).