MESON Chess Problem Database
Problem Display
PID: 83580 (8/8/8/n1QPN3/1P1p4/5PN1/1KPkpqR1/R5B1 w - - 0 1)
Ellerman, Arnoldo
Good Companions, 1921
#2
11 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Se4#
- 2.Qxd4#
- 1...Qxg1
- 2.Rxe2#
- 1...Qe3
- 2.Sf1#
- 1...Qxg3
- 2.Qxd4#
- 1...Qf1
- 2.Sxf1#
- 2.Se4#
- 2.Qxd4#
- 1...Qxg2
- 2.Se4#
- 2.Qxd4#
- 1...Qxf3
- 2.Sxf3#
- 1...Sb3
- 2.Sc4#
- 1...Sc4+
- 2.Sxc4#
- 1...Sc6
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...e1Q
- 2.Qxd4#
- 1...e1B
- 2.Qxd4#
- 1...e1R
- 2.Qxd4#
- 1...d3
- 2.Se4#
- 1...Qe1
- Tries
- 1.Bxf2?
- threat
- 2.Se4#
- 2.Qxd4#
- 1...Sc4+
- 2.Sxc4#
- 1...e1Q
- 2.Qxd4#
- 1...e1B
- 2.Qxd4#
- 1...e1R
- 2.Qxd4#
- 1...Sb3
- 2.Se4#
- 2.Sc4#
- 1...Sc6
- 2.Se4#
- 2.Sc4#
- 1...d3
- 2.Se4#
- 2.Be1#
- 2.Be3#
- 2.Qe3#
- 2.Qc3#
- 1...e1S!
- threat
- 1.Rxf2?
- threat
- 2.Sf1#
- 2.Rxe2#
- 2.Qxd4#
- 1...Sc4+
- 2.Sxc4#
- 1...Sb3
- 2.Sf1#
- 2.Sc4#
- 2.Rxe2#
- 1...Sc6
- 2.Sf1#
- 2.Sc4#
- 2.Rxe2#
- 1...d3
- 2.Sf1#
- 2.Se4#
- 1...Ke3!
- threat
- 1.Qc4?
- threat
- 2.Qd3#
- 1...Sxc4+
- 2.Sxc4#
- 1...Qxf3
- 2.Sxf3#
- 1...e1S
- 2.Sf1#
- 1...Qe3
- 2.Sf1#
- 1...d3
- 2.Qxd3#
- 1...Ke3!
- threat
- 1.Qb5?
- threat
- 2.Qd3#
- 1...Sc4+
- 2.Sxc4#
- 1...Qxf3
- 2.Sxf3#
- 1...e1S
- 2.Sf1#
- 1...Qe3
- 2.Sf1#
- 1...d3
- 2.Qxd3#
- 1...Ke3!
- threat
- 1.Bxf2?
- Keys
- 1.Qb6!
- 1...Sc4+
- 2.Sxc4#
- 1...Ke3
- 2.Qh6#
- 1...Qxg1
- 2.Rxe2#
- 1...Qxg3
- 2.Qxd4#
- 1...Qxg2
- 2.Se4#
- 2.Qxd4#
- 2.Qh6#
- 1...Qxf3
- 2.Sxf3#
- 1...e1Q
- 2.Qxd4#
- 1...e1S
- 2.Qh6#
- 1...e1B
- 2.Qxd4#
- 2.Qh6#
- 1...e1R
- 2.Qxd4#
- 1...Qe1
- 2.Se4#
- 2.Qxd4#
- 2.Qh6#
- 1...Qe3
- 2.Sf1#
- 1...Qf1
- 2.Sxf1#
- 2.Se4#
- 2.Qxd4#
- 2.Qh6#
- 1...Sb3
- 2.Sc4#
- 1...Sc6
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...d3
- 2.Se4#
- 1...Sc4+
- 1.Qb6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- Q(c);OGATE,P_SPINP(b),XB(B)::R1(E),XP(b)
- Q(c);N_GUARD,P_SPINP(b)::S(G)
- Q(c);N_GUARD,P_SPINP(b),XS(G)::QAR2(I),XP(d)
- Q(c);P_SPINP(b),XP(F)::S(K),XQ(c)
- S(e);N_GUARD::S(K)
- S(e);CHECK,N_GUARD::S(K),XS(e)
- P(b);P_SPINQ(c)::QAR2(I),XP(d)
- P(d);::S(G)
- Tries
- Try
- B(B);XQ(c)
- Threat
- DUALS(2)
- Vars
- S(e);CHECK,N_GUARD::S(K),XS(e)
- P(b);::QAR2(I),XP(d)
- Refutation
- P(b);
- Try
- R(E);P_PINP(b),XQ(c)
- Threat
- DUALS(3)
- Vars
- S(e);CHECK,N_GUARD::S(K),XS(e)
- Refutation
- K(a);N_SPINP(b),P_SPINP(d),S_FLIGHT
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- S(e);CHECK,XQ(I)::S(K),XS(e)
- Q(c);P_SPINP(b),XP(F)::S(K),XQ(c)
- P(b);N_GUARD,P_SPINQ(c)::S(G)
- Q(c);N_GUARD,P_SPINP(b)::S(G)
- P(d);::QAR1(I),XP(d)
- Refutation
- K(a);P_SPINQ(c),S_FLIGHT
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- S(e);CHECK,N_GUARD::S(K),XS(e)
- Q(c);P_SPINP(b),XP(F)::S(K),XQ(c)
- P(b);N_GUARD,P_SPINQ(c)::S(G)
- Q(c);N_GUARD,P_SPINP(b)::S(G)
- P(d);::QAR1(I),XP(d)
- Refutation
- K(a);P_SPINQ(c),S_FLIGHT
- Try
- Actual
- Q(I);
- Vars
- S(e);CHECK,N_GUARD::S(K),XS(e)
- K(a);P_SPINP(d),P_SPINQ(c),S_FLIGHT::QAB(I)
- Q(c);OGATE,P_SPINP(b),XB(B)::R1(E),XP(b)
- Q(c);N_GUARD,P_SPINP(b),XS(G)::QAR2(I),XP(d)
- Q(c);P_SPINP(b),XP(F)::S(K),XQ(c)
- P(b);P_SPINQ(c)::QAR2(I),XP(d)
- P(b);P_SPINQ(c)::QAB(I)
- Q(c);N_GUARD,P_SPINP(b)::S(G)
- S(e);N_GUARD::S(K)
- P(d);::S(G)
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).