MESON Chess Problem Database
Problem Display
PID: 199839 (4R3/1P1Pq3/nn1P4/1Q1p4/1pPkPB2/3N1RN1/1Pr5/KB3b1r w - - 0 1)
Forster, Klaus
Die Schwalbe, 2019
#2
14 + 9
SOLUTION
- SOUND
- Sets
- 1...Qh4
- 2.Sf5#
- 2.Be5#
- 1...Qxd6
- 2.Sf5#
- 1...Qd8
- 2.Sf5#
- 2.Be5#
- 1...Qf8
- 2.Be5#
- 1...Qe5
- 2.Bxe5#
- 1...Qxd7
- 2.Be5#
- 1...Qf7
- 2.Be5#
- 1...Qg7
- 2.Sf5#
- 1...Qh7
- 2.Be5#
- 1...Rc1
- 2.Be3#
- 1...Rd2
- 2.Be3#
- 1...Rf2
- 2.Be3#
- 1...Rg2
- 2.Be3#
- 1...Rh2
- 2.Be3#
- 1...Rc3
- 2.Be3#
- 1...Rxc4
- 2.Be3#
- 1...Sc5
- 2.Qxc5#
- 1...Sc7
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sa4
- 2.Qxd5#
- 1...Sxc4
- 2.Qxd5#
- 1...Sxd7
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Sc8
- 2.Qxd5#
- 1...dxe4
- 2.Sf5#
- 1...Qh4
- Tries
- 1.Sxb4?
- threat
- 2.Sxc2#
- 2.Sc6#
- 1...Qxd6
- 2.Sf5#
- 2.Sxc2#
- 2.Be3#
- 1...Qxe4
- 2.Sc6#
- 1...Qxd7
- 2.Sxc2#
- 2.Be3#
- 2.Be5#
- 1...Rxb2
- 2.Sf5#
- 2.Sc6#
- 1...Rxc4
- 2.Sf5#
- 1...Rhh2
- 2.Sc6#
- 1...Rc1
- 2.Sf5#
- 2.Sc6#
- 1...Rd2
- 2.Sf5#
- 2.Sc6#
- 1...Re2
- 2.Sf5#
- 2.Sc6#
- 2.Rd3#
- 1...Rf2
- 2.Sf5#
- 2.Sc6#
- 1...Rg2
- 2.Sf5#
- 2.Sc6#
- 1...Rch2
- 2.Sf5#
- 2.Sc6#
- 1...Rc3
- 2.Sf5#
- 2.Sc6#
- 2.bxc3#
- 1...Bd3
- 2.Sc6#
- 2.Rxd3#
- 1...Sb8
- 2.Sxc2#
- 1...Sxb4!
- threat
- 1.Sc5?
- threat
- 2.Sf5#
- 2.Sb3#
- 1...Qxe4
- 2.Sb3#
- 1...Qxd7
- 2.Sb3#
- 2.Be3#
- 2.Be5#
- 1...Rxb2
- 2.Sf5#
- 1...Bxc4
- 2.Sf5#
- 1...dxc4
- 2.Sf5#
- 1...Qg5
- 2.Sb3#
- 2.Se6#
- 1...Qf6
- 2.Sb3#
- 2.Be3#
- 1...Qf8
- 2.Sb3#
- 2.Se6#
- 2.Be3#
- 2.Be5#
- 1...Qe5
- 2.Sb3#
- 2.Be3#
- 2.Bxe5#
- 1...Qe6
- 2.Sb3#
- 2.Sxe6#
- 1...Qf7
- 2.Sb3#
- 2.Be3#
- 2.Be5#
- 1...Qh7
- 2.Sb3#
- 2.Se6#
- 2.Be3#
- 2.Be5#
- 1...Rh5
- 2.Sb3#
- 1...Rc3
- 2.Sf5#
- 1...Bh3
- 2.Sb3#
- 2.Rd3#
- 1...b3
- 2.Sf5#
- 2.Sxb3#
- 1...Sxc5!
- threat
- 1.Rxe7?
- threat
- 2.Sf5#
- 2.Be5#
- 1...Rxb2
- 2.Be5#
- 1...Sxc4
- 2.Sf5#
- 2.Qxd5#
- 1...Sxd7
- 2.Sf5#
- 2.Qxd5#
- 1...Bh3
- 2.Be5#
- 1...Rh5!
- threat
- 1.Qxb6+?
- 1...Sc5
- 2.Qxc5#
- 1...Kxc4!
- 1...Sc5
- 1.b8S?
- threat
- 2.Sc6#
- 1...Qxd6
- 2.Sf5#
- 1...Qxd7
- 2.Be5#
- 1...Rxc4
- 2.Be3#
- 1...Sxb8
- 2.Qc5#
- 1...Rxb2!
- threat
- 1.Sxb4?
- Keys
- 1.Se5!
- threat
- 2.Sc6#
- 1...Qxd6
- 2.Be3#
- 1...Qxe5
- 2.Bxe5#
- 1...Qxd7
- 2.Be3#
- 1...Rxc4
- 2.Sf5#
- 1...Sb8
- 2.Qxb6#
- threat
- 1.Se5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 18
- Sets
- Q(i);XP(K)::S(F)
- Q(i);N_GUARD::B(I)
- Q(i);N_GUARD::B(I),XQ(i)
- Q(i);N_GUARD,XP(M)::B(I)
- Q(i);::S(F)
- R(c);P_PINB(B)::B(I)
- R(c);::B(I)
- R(c);XP(G)::B(I)
- S(g);N_GUARD::QAB1(J),XS(g)
- S(g);N_GUARD::QAB1(J)
- S(h);N_GUARD::QAR1(J),XP(f)
- S(h);N_GUARD,XP(G)::QAR1(J),XP(f)
- S(h);N_GUARD,XP(M)::QAR1(J),XP(f)
- P(f);SBLOCK,XP(H)::S(F)
- Tries
- Try
- S(D);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(i);XP(H)::S(D)
- R(c);XP(G)::S(F)
- R(b);::S(D)
- S(g);::S(D),XR(c)
- Refutation
- S(g);XS(D)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(i);XP(H)::S(D)
- R(c);XP(C)::S(F)
- B(a);P_PINB(B),XP(G)::S(F)
- P(f);XP(G)::S(F)
- R(b);::S(D)
- R(c);::S(F)
- Refutation
- S(g);XS(D)
- Try
- R(N);XQ(i)
- Threat
- DUALS(2)
- Vars
- R(c);XP(C)::B(I)
- B(a);P_PINB(B)::B(I)
- Refutation
- R(b);
- Try
- Q(J);CHECK,XS(h)
- Vars
- S(g);N_GUARD,P_SPINS(g)::QAB1(J),XS(g)
- Refutation
- K(e);P-FLIGHT,XP(G)
- Try
- P(L);
- Threat
- S(L)
- Vars
- Q(i);XP(K)::S(F)
- Q(i);N_GUARD,XP(M)::B(I)
- R(c);XP(G)::B(I)
- S(g);N_GUARD,XS(L)::QAB1(J)
- Refutation
- R(c);XP(C)
- Try
- Actual
- S(D);
- Threat
- S(D)
- Vars
- Q(i);XP(K)::B(I)
- Q(i);OGATE,XS(D)::B(I),XQ(i)
- Q(i);XP(M)::B(I)
- R(c);XP(G)::S(F)
- S(g);N_GUARD::QAB(J),XS(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).