MESON Chess Problem Database
Problem Display
PID: 247713 (3r1B2/1pR5/3nQp2/1p1NbrN1/2Pk4/1Rp2p1K/1Pq1BP2/1b6 w - - 0 1)
Ellerman, Arnoldo
4th HM., Stratford Express, 1950
#2
11 + 12
| 14867 | BCPS Library | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.bxc3#
- 1...Qe4
- 2.bxc3#
- 1...Bh2
- 2.Qe3#
- 1...Bg3
- 2.Qe3#
- 1...Bf4
- 2.Sxf3#
- 1...Sxc4
- 2.Bc5#
- 1...Sf7
- 2.Bc5#
- 2.Qb6#
- 1...Sc8
- 2.Bc5#
- 1...Se8
- 2.Bc5#
- 2.Qb6#
- 1...Qd1
- Tries
- 1.Sxc3?
- threat
- 2.Qd5#
- 1...Sxc4
- 2.Sxb5#
- 2.Bc5#
- 1...Bh2
- 2.Qe3#
- 1...Bg3
- 2.Qe3#
- 1...Bf4
- 2.Sxf3#
- 1...Se4
- 2.Sxb5#
- 1...Sf7
- 2.Sxb5#
- 2.Bc5#
- 2.Qb6#
- 1...Sc8
- 2.Sxb5#
- 2.Bc5#
- 1...Se8
- 2.Sxb5#
- 2.Bc5#
- 2.Qb6#
- 1...Qe4!
- threat
- 1.Sb4?
- threat
- 2.Qd5#
- 1...Sxc4
- 2.Bc5#
- 1...Qe4
- 2.bxc3#
- 1...Bh2
- 2.Qe3#
- 1...Bg3
- 2.Qe3#
- 1...Bf4
- 2.Sxf3#
- 1...Sf7
- 2.Bc5#
- 2.Qb6#
- 1...Sc8
- 2.Bc5#
- 1...Se8
- 2.Bc5#
- 2.Qb6#
- 1...Se4!
- threat
- 1.Sb6?
- threat
- 2.Qd5#
- 1...Sxc4
- 2.Bc5#
- 1...Qe4
- 2.bxc3#
- 1...Bh2
- 2.Qe3#
- 1...Bg3
- 2.Qe3#
- 1...Bf4
- 2.Sxf3#
- 1...Sf7
- 2.Bc5#
- 1...Sc8
- 2.Bc5#
- 1...Se8
- 2.Bc5#
- 1...Se4!
- threat
- 1.Sxf6?
- threat
- 2.Qd5#
- 1...Bxf6
- 2.Qe3#
- 1...Sxc4
- 2.Bc5#
- 1...Qe4
- 2.bxc3#
- 1...Bh2
- 2.Qe3#
- 1...Bg3
- 2.Qe3#
- 1...Bf4
- 2.Sxf3#
- 1...Sf7
- 2.Bc5#
- 2.Qb6#
- 1...Sc8
- 2.Bc5#
- 1...Se8
- 2.Bc5#
- 2.Qb6#
- 1...Se4!
- threat
- 1.Sxc3?
- Keys
- 1.Sf4!
- threat
- 2.Qd5#
- 1...Bxf4
- 2.Sxf3#
- 1...Sxc4
- 2.Bc5#
- 1...Qe4
- 2.bxc3#
- 1...Se4
- 2.Sxf3#
- 1...Sf7
- 2.Bc5#
- 2.Qb6#
- 1...Sc8
- 2.Bc5#
- 1...Se8
- 2.Bc5#
- 2.Qb6#
- threat
- 1.Sf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- Q(b);N_GUARD::P(A),XP(c)
- B(g);OGATE::QAB1(I)
- B(g);S_CUTR(h)::S(H),XP(d)
- S(i);OGATE,XP(F)::B(K)
- S(i);OGATE::B(K)
- Tries
- Try
- S(G);XP(c)
- Threat
- QAR1(I)
- Vars
- B(g);OGATE::QAB1(I)
- B(g);S_CUTR(h)::S(H),XP(d)
- S(i);N_GUARD::S(G),XP(f)
- Refutation
- Q(b);
- Try
- S(G);
- Threat
- QAR1(I)
- Vars
- S(i);OGATE,XP(F)::B(K)
- Q(b);N_GUARD::P(A),XP(c)
- B(g);OGATE::QAB1(I)
- B(g);S_CUTR(h)::S(H),XP(d)
- S(i);OGATE::B(K)
- Refutation
- S(i);
- Try
- S(G);
- Threat
- QAR1(I)
- Vars
- S(i);OGATE,XP(F)::B(K)
- Q(b);N_GUARD::P(A),XP(c)
- B(g);OGATE::QAB1(I)
- B(g);S_CUTR(h)::S(H),XP(d)
- S(i);OGATE::B(K)
- Refutation
- S(i);
- Try
- S(G);XP(j)
- Threat
- QAR1(I)
- Vars
- B(g);OGATE,XS(G)::QAB1(I)
- S(i);OGATE,XP(F)::B(K)
- Q(b);N_GUARD::P(A),XP(c)
- B(g);OGATE::QAB1(I)
- B(g);S_CUTR(h)::S(H),XP(d)
- S(i);OGATE::B(K)
- Refutation
- S(i);
- Try
- Actual
- S(G);
- Threat
- QAR1(I)
- Vars
- B(g);XS(G)::S(H),XP(d)
- S(i);OGATE,XP(F)::B(K)
- Q(b);N_GUARD::P(A),XP(c)
- S(i);SBLOCK::S(H),XP(d)
- S(i);OGATE::B(K)
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).