MESON Chess Problem Database
Problem Display
PID: 221519 (r1rN4/b6q/1n3Npp/1Bk1P3/p2n4/P1BP4/b5Q1/1R5K w - - 0 1)
Ellerman, Arnoldo
2nd HM., BCPS 052. Ty., 1943-1944
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qg8
- 2.Sb7#
- 1...Qb7
- 2.Sxb7#
- 1...Qh8
- 2.Sb7#
- 1...Bf7
- 2.Sb7#
- 1...Qg8
- Tries
- 1.Bxa4?
- threat
- 2.Bb4#
- 1...Sc2
- 2.Rb5#
- 1...Se2
- 2.Rb5#
- 1...Sb3
- 2.Se6#
- 1...Sf3
- 2.Rb5#
- 1...Sb5
- 2.Rxb5#
- 1...Sf5
- 2.Rb5#
- 1...Sc6
- 2.Rb5#
- 1...Se6
- 2.Rb5#
- 1...Sc4
- 2.Qd5#
- 1...Sd5
- 2.Se4#
- 1...Sd7
- 2.Sb7#
- 1...Sxa4!
- threat
- 1.Bc4?
- threat
- 2.Se4#
- 2.Bb4#
- 1...Rxd8
- 2.Bb4#
- 1...Sxc4
- 2.Qd5#
- 1...Qb7
- 2.Sxb7#
- 2.Bb4#
- 1...Sc2
- 2.Se4#
- 2.Se6#
- 2.Rb5#
- 1...Se2
- 2.Se4#
- 2.Se6#
- 2.Rb5#
- 1...Sb3
- 2.Se4#
- 2.Se6#
- 1...Sf3
- 2.Se4#
- 2.Rb5#
- 1...Sb5
- 2.Se4#
- 2.Se6#
- 2.Rxb5#
- 1...Sf5
- 2.Se4#
- 2.Se6#
- 2.Rb5#
- 1...Sc6
- 2.Se4#
- 2.Se6#
- 2.Rb5#
- 1...Se6
- 2.Se4#
- 2.Sxe6#
- 2.Rb5#
- 1...Sd5
- 2.Se4#
- 2.Qxd5#
- 1...Sd7
- 2.Se4#
- 2.Sb7#
- 2.Qd5#
- 1...g5
- 2.Bb4#
- 1...Bxc4!
- threat
- 1.Bd7?
- threat
- 2.Sb7#
- 2.Bb4#
- 1...Rxd8
- 2.Bb4#
- 1...Sxd7
- 2.Sb7#
- 1...Rab8
- 2.Bb4#
- 1...Rc6
- 2.Sb7#
- 1...Rc7
- 2.Bb4#
- 1...Rcb8
- 2.Bb4#
- 1...Bd5
- 2.Bb4#
- 1...Sc2
- 2.Sb7#
- 2.Rb5#
- 1...Se2
- 2.Sb7#
- 2.Rb5#
- 1...Sb3
- 2.Se6#
- 2.Sb7#
- 1...Sf3
- 2.Sb7#
- 2.Rb5#
- 1...Sb5
- 2.Sb7#
- 2.Rxb5#
- 1...Sf5
- 2.Sb7#
- 2.Rb5#
- 1...Sc6
- 2.Sb7#
- 1...Se6
- 2.Sb7#
- 2.Rb5#
- 1...Sc4
- 2.Sb7#
- 2.Qd5#
- 1...Sd5
- 2.Se4#
- 2.Sb7#
- 1...Qxd7!
- threat
- 1.Bxa4?
- Keys
- 1.Ba6!
- threat
- 2.Bb4#
- 1...Sc2
- 2.Rb5#
- 1...Se2
- 2.Rb5#
- 1...Sb3
- 2.Se6#
- 1...Sf3
- 2.Rb5#
- 1...Sb5
- 2.Rxb5#
- 1...Sf5
- 2.Rb5#
- 1...Sc6
- 2.Rb5#
- 1...Se6
- 2.Rb5#
- 1...Sc4
- 2.Qd5#
- 1...Sd5
- 2.Se4#
- 1...Sd7
- 2.Sb7#
- threat
- 1.Ba6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 11
- REMOVED MATES = 4
- Sets
- Q(i);N_GUARD::S(J)
- Q(i);N_GUARD,P_PINQ(C)::S(J),XQ(i)
- B(a);S_CUTQ(i)::S(J)
- Tries
- Try
- B(G);XP(b)
- Threat
- B(E)
- Vars
- S(c);N_GUARD::R1(A)
- S(c);N_GUARD,S_CUTB(a)::S(J)
- S(c);N_GUARD::R1(A),XS(c)
- S(e);N_GUARD,S_CUTB(a)::QAR1(C)
- S(e);SBLOCK::S(I)
- S(e);S_CUTQ(i)::S(J)
- Refutation
- S(e);XB(G)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(k);XS(J)::B(E)
- S(e);N_GUARD,XB(G)::QAR1(C)
- P(f);::B(E)
- Refutation
- B(a);XB(G)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(k);XS(J)::B(E)
- S(e);XB(G)::S(J)
- R(j);::B(E)
- R(k);::S(J)
- R(k);::B(E)
- B(a);P_PINQ(C)::B(E)
- S(c);::S(J)
- Refutation
- Q(i);XB(G)
- Try
- Actual
- B(G);
- Threat
- B(E)
- Vars
- S(c);N_GUARD::R1(A)
- S(c);N_GUARD,S_CUTB(a)::S(J)
- S(c);N_GUARD::R1(A),XS(c)
- S(e);N_GUARD,S_CUTB(a)::QAR1(C)
- S(e);SBLOCK::S(I)
- S(e);S_CUTQ(i)::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).