MESON Chess Problem Database
Problem Display
PID: 155068 (3r2bn/5P2/R2p1p1r/2BknBPN/NP3p1q/b2p1p2/1P6/1KQ1R3 w - - 0 1)
Berlin, Dieter
Die Schwalbe, 2014
#2
12 + 13
SOLUTION
- SOUND
- Sets
- 1...Qxe1
- 2.Sxf4#
- 1...Qf2
- 2.Sxf4#
- 1...Qh1
- 2.Sxf4#
- 1...Qh3
- 2.Sxf4#
- 1...Rh7
- 2.Sxf6#
- 1...Ra8
- 2.Rxd6#
- 1...Rb8
- 2.Rxd6#
- 1...Rc8
- 2.Rxd6#
- 1...Re8
- 2.Rxd6#
- 1...Rf8
- 2.Rxd6#
- 1...Sc4
- 2.Sc3#
- 2.Be6#
- 1...Sg4
- 2.Sxf4#
- 2.Be6#
- 1...Sc6
- 2.Sb6#
- 2.Be6#
- 1...Seg6
- 2.Sxf6#
- 2.Be6#
- 1...Sd7
- 2.Be6#
- 2.Rxd6#
- 1...Sexf7
- 2.Be6#
- 1...Shg6
- 2.Sxf6#
- 1...dxc5
- 2.Qxc5#
- 1...Qxe1
- Tries
- 1.Sg7?
- threat
- 2.Be4#
- 2.Be6#
- 1...Bxf7
- 2.Be4#
- 1...Sexf7
- 2.Be6#
- 1...dxc5
- 2.Qxc5#
- 1...fxg5
- 2.Be4#
- 1...Qh3
- 2.Be4#
- 1...Qg4
- 2.Be4#
- 1...Re8
- 2.Be4#
- 2.Rxd6#
- 1...Bh7
- 2.Be6#
- 1...Sc4
- 2.Sc3#
- 2.Be6#
- 1...Sg4
- 2.Be6#
- 1...Sc6
- 2.Sb6#
- 2.Be6#
- 1...Seg6
- 2.Be6#
- 1...Sd7
- 2.Be6#
- 2.Rxd6#
- 1...Qxe1!
- threat
- 1.Re4?
- threat
- 2.Sc3#
- 2.Rd4#
- 1...Bxb4
- 2.Rd4#
- 1...Sexf7
- 2.Sc3#
- 2.Qc4#
- 1...dxc5
- 2.Sc3#
- 2.Qxc5#
- 1...Qe1
- 2.Sxf4#
- 2.Rd4#
- 1...Qf2
- 2.Sc3#
- 2.Sxf4#
- 1...Sc4
- 2.Sc3#
- 2.Qxc4#
- 1...Sg4
- 2.Sc3#
- 2.Sxf4#
- 2.Qc4#
- 1...Sc6
- 2.Sc3#
- 2.Sb6#
- 2.Qc4#
- 1...Seg6
- 2.Sc3#
- 2.Sxf6#
- 2.Qc4#
- 1...Sd7
- 2.Sc3#
- 2.Rxd6#
- 2.Qc4#
- 1...Bxb2!
- threat
- 1.Qc4+?
- 1...Sxc4
- 2.Sc3#
- 2.Be6#
- 1...Kxc4!
- 1...Sxc4
- 1.fxg8Q+?
- 1...Rxg8
- 2.Rxd6#
- 1...Sef7
- 2.Be6#
- 1...Shf7!
- 1...Rxg8
- 1.fxg8S?
- threat
- 2.Se7#
- 1...Rxg8
- 2.Rxd6#
- 1...dxc5
- 2.Qxc5#
- 1...Rh7
- 2.Shxf6#
- 2.Sgxf6#
- 1...Re8
- 2.Rxd6#
- 1...Sc6
- 2.Sb6#
- 2.Be6#
- 1...Seg6
- 2.Shxf6#
- 2.Sgxf6#
- 2.Be6#
- 1...Shg6
- 2.Shxf6#
- 2.Sgxf6#
- 1...Rd7!
- threat
- 1.fxg8B+?
- 1...Rxg8
- 2.Rxd6#
- 1...Sef7
- 2.Be6#
- 1...Shf7!
- 1...Rxg8
- 1.Sg7?
- Keys
- 1.f8S!
- threat
- 2.Be4#
- 1...Qxe1
- 2.Sxf4#
- 1...Rxf8
- 2.Rxd6#
- 1...dxc5
- 2.Qxc5#
- 1...Bh7
- 2.Be6#
- 1...Sc4
- 2.Sc3#
- 1...Sg4
- 2.Sxf4#
- 1...Sc6
- 2.Sb6#
- 1...Seg6
- 2.Sxf6#
- 1...Sd7
- 2.Rxd6#
- 1...Sef7
- 2.Be6#
- threat
- 1.f8S!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 9
- Sets
- Q(e);N_GUARD,P_PINQ(B),XR(C)::S(J),XP(d)
- Q(e);N_GUARD::S(J),XP(d)
- R(j);N_GUARD::S(J),XP(i)
- R(k);N_GUARD::R1(K),XP(h)
- S(g);XP(L)::B(H)
- S(m);S_CUTR(j)::S(J),XP(i)
- P(h);OGATE,XB(G)::QAR1(B),XP(h)
- Tries
- Try
- S(J);
- Threat
- DUALS(2)
- Vars
- B(l);XP(L)::B(H)
- S(g);XP(L)::B(H)
- P(h);OGATE,XB(G)::QAR1(B),XP(h)
- P(i);XP(I)::B(H)
- Q(e);::B(H)
- B(l);::B(H)
- S(g);::B(H)
- Refutation
- Q(e);P_PINQ(B),XR(C)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- B(a);XP(F)::R1(C)
- Refutation
- B(a);XP(D)
- Try
- Q(B);CHECK
- Refutation
- K(f);S_FLIGHT,XQ(B)
- Try
- P(L);CHECK,XB(l)
- Vars
- R(k);XQ(L)::R1(K),XP(h)
- S(g);P_SPINS(g)::B(H)
- Refutation
- S(m);P_SPINS(m)
- Try
- P(L);XB(l)
- Threat
- S(L)
- Vars
- R(k);N_GUARD,XS(L)::R1(K),XP(h)
- P(h);OGATE,XB(G)::QAR1(B),XP(h)
- R(k);N_GUARD::R1(K),XP(h)
- Refutation
- R(k);
- Try
- P(L);CHECK,XB(l)
- Vars
- R(k);XB(L)::R1(K),XP(h)
- S(g);P_SPINS(g)::B(H)
- Refutation
- S(m);P_SPINS(m)
- Try
- Actual
- P(L);
- Threat
- B(H)
- Vars
- Q(e);N_GUARD,P_PINQ(B),XR(C)::S(J),XP(d)
- R(k);N_GUARD,XS(L)::R1(K),XP(h)
- P(h);OGATE,XB(G)::QAR1(B),XP(h)
- B(l);N_GUARD::B(H)
- S(g);SBLOCK::S(E)
- S(g);S_CUTQ(e)::S(J),XP(d)
- S(g);S_CUTR(j)::S(J),XP(i)
- S(g);S_CUTR(k)::R1(K),XP(h)
- S(g);S_CUTB(l)::B(H)
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).