MESON Chess Problem Database
Problem Display
PID: 60021 (3rr3/1p1Q1PPb/4p3/8/Rbn1kBBR/3N2pP/K2nP3/3N4 w - - 0 1)
Ellerman, Arnoldo
2nd Prize, Brisbane Courier, 1927
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Ba3
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Bc5
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Sf3
- 2.exf3#
- 1...Sb2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Se3
- 2.Sc3#
- 1...Sa5
- 2.Sc3#
- 1...Se5
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...g2
- 2.S1f2#
- 1...Ba3
- Tries
- 1.Bxd2?
- threat
- 2.Bxe6#
- 1...Bxd2
- 2.Rxc4#
- 1...Be7
- 2.Sc3#
- 2.Rxc4#
- 1...Bf5
- 2.Bf3#
- 1...Se3
- 2.Sc3#
- 1...Se5
- 2.Sc3#
- 2.Sc5#
- 1...e5
- 2.Bf3#
- 2.Bf5#
- 2.Bh5#
- 2.Be6#
- 1...Bd6!
- threat
- 1.Bxg3?
- threat
- 2.S3f2#
- 2.Bxe6#
- 1...Rxd7
- 2.Bxe6#
- 1...Sd6
- 2.Bxe6#
- 1...Bc5
- 2.Sxc5#
- 2.Bxe6#
- 1...Be7
- 2.S3f2#
- 1...Bf5
- 2.S3f2#
- 2.Bf3#
- 1...Sf3
- 2.S3f2#
- 2.exf3#
- 1...Se3
- 2.S1f2#
- 2.Sc3#
- 2.S3f2#
- 2.Sc5#
- 1...Se5
- 2.S3f2#
- 2.Sc5#
- 1...e5
- 2.S3f2#
- 2.Bf3#
- 2.Bf5#
- 2.Bh5#
- 2.Be6#
- 1...Bd6!
- threat
- 1.Bg5?
- threat
- 2.Bxe6#
- 1...Bf5
- 2.Bf3#
- 1...Sf3
- 2.exf3#
- 1...Se3
- 2.Sc3#
- 1...Se5
- 2.Sc3#
- 2.Sc5#
- 1...e5
- 2.Bf3#
- 2.Bf5#
- 2.Bh5#
- 2.Be6#
- 1...Bd6!
- threat
- 1.Bh6?
- threat
- 2.Bxe6#
- 1...Be7
- 2.Sc3#
- 1...Bf5
- 2.Bf3#
- 1...Sf3
- 2.exf3#
- 1...Se3
- 2.Sc3#
- 1...Se5
- 2.Sc3#
- 2.Sc5#
- 1...e5
- 2.Bf3#
- 2.Bf5#
- 2.Bh5#
- 2.Be6#
- 1...Bd6!
- threat
- 1.Bxd2?
- Keys
- 1.Be3!
- threat
- 2.Bxe6#
- 1...Sxe3
- 2.Sc3#
- 1...Bd6
- 2.Qxb7#
- 1...Be7
- 2.Qxe6#
- 1...Bf5
- 2.Bf3#
- 1...Sf3
- 2.exf3#
- 1...Se5
- 2.Sc5#
- 1...e5
- 2.Bf3#
- 2.Bf5#
- 2.Bh5#
- 2.Be6#
- threat
- 1.Be3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- B(c);N_GUARD,P_SPINS(d)::S(A)
- B(c);N_GUARD,P_SPINS(d)::S(A),XB(c)
- S(a);OGATE::P(C),XS(a)
- S(d);P_SPINB(c)::S(A)
- P(b);N_GUARD::S(A)
- Tries
- Try
- B(G);XS(a)
- Threat
- R(I)+B(H),XP(f)
- Vars
- B(c);OGATE,P_SPINS(d),XB(G)::R(F),XS(d)
- B(h);SBLOCK::R(I)+B(H),DCHECK
- S(d);P_SPINB(c)::S(A)
- Refutation
- B(c);P_SPINS(d)
- Try
- B(G);XP(b)
- Threat
- DUALS(2)
- Vars
- R(i);XQ(J)::R(I)+B(H),XP(f)
- S(d);P_SPINB(c)::R(I)+B(H),XP(f)
- B(c);P_SPINS(d)::S(D)
- Refutation
- B(c);P_SPINS(d)
- Try
- B(G);
- Threat
- R(I)+B(H),XP(f)
- Vars
- B(h);SBLOCK::R(I)+B(H),DCHECK
- S(a);OGATE::P(C),XS(a)
- S(d);P_SPINB(c)::S(A)
- Refutation
- B(c);P_SPINS(d)
- Try
- B(G);
- Threat
- R(I)+B(H),XP(f)
- Vars
- B(c);N_GUARD,P_SPINS(d)::S(A)
- B(h);SBLOCK::R(I)+B(H),DCHECK
- S(a);OGATE::P(C),XS(a)
- S(d);P_SPINB(c)::S(A)
- Refutation
- B(c);P_SPINS(d)
- Try
- Actual
- B(G);
- Threat
- R(I)+B(H),XP(f)
- Vars
- S(d);P_SPINB(c),SBLOCK,XB(G)::S(A)
- B(c);P_SPINS(d),S_CUTR(i)::QAB(J),XP(g)
- B(c);P_SPINS(d),S_CUTR(j)::QAR2(J),XP(f)
- B(h);SBLOCK::R(I)+B(H),DCHECK
- S(a);OGATE::P(C),XS(a)
- S(d);P_SPINB(c),SBLOCK::S(D)
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).