MESON Chess Problem Database
Problem Display
PID: 143629 (1b1rq3/1N2Qp2/1rPp1p1B/5R2/1p1kN3/1K3BP1/R3PP2/1n1n4 w - - 0 1)
Hoffmann, Fritz
Freie Presse, 1987
#2
12 + 11
| 422 | Suomen Tehtavaniekat | 1991 |
SOLUTION
- SOUND
- Sets
- 1...Qxc6
- 2.Qxf6#
- 1...Qd7
- 2.Qxf6#
- 1...Qf8
- 2.Qxf6#
- 1...Qg8
- 2.Qxf6#
- 1...Sd2+
- 2.Rxd2#
- 1...Sa3
- 2.Rd2#
- 1...Sbc3
- 2.Rd2#
- 1...Sb2
- 2.Be3#
- 1...Sdc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 2.fxe3#
- 1...d5
- 2.Qc5#
- 1...Qxc6
- Tries
- 1.Sd2?
- threat
- 2.Rf4#
- 2.Rd5#
- 1...Sxd2+
- 2.Rxd2#
- 1...Qxc6
- 2.Qxf6#
- 1...Qxe7
- 2.Rd5#
- 1...Rxb7
- 2.Rd5#
- 1...Sxf2
- 2.Be3#
- 2.Rd5#
- 1...Rb5
- 2.Rf4#
- 1...Sdc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 2.Rf4#
- 2.fxe3#
- 1...d5
- 2.Qc5#
- 1...Sbc3!
- threat
- 1.Sc3?
- threat
- 2.Rf4#
- 2.Rd5#
- 1...Sd2+
- 2.Rxd2#
- 1...Qxc6
- 2.Qxf6#
- 1...Qxe7
- 2.Rd5#
- 1...Rxb7
- 2.Rd5#
- 1...Sbxc3
- 2.Rd2#
- 1...Sxf2
- 2.Be3#
- 2.Rd5#
- 1...Sdxc3
- 2.Be3#
- 1...Rb5
- 2.Sxb5#
- 2.Rf4#
- 1...Se3
- 2.Bxe3#
- 2.Rf4#
- 2.fxe3#
- 1...d5
- 2.Qc5#
- 1...bxc3+!
- threat
- 1.Sec5?
- threat
- 2.Rf4#
- 2.Rd5#
- 1...Sd2+
- 2.Rxd2#
- 1...Qxc6
- 2.Qxf6#
- 1...Qxe7
- 2.Rd5#
- 1...Rxb7
- 2.Rd5#
- 1...Sxf2
- 2.Be3#
- 2.Rd5#
- 2.e3#
- 1...dxc5
- 2.Qxc5#
- 1...Sbc3
- 2.Rd2#
- 1...Sdc3
- 2.Be3#
- 2.e3#
- 1...Se3
- 2.Bxe3#
- 2.Rf4#
- 2.fxe3#
- 1...d5!
- threat
- 1.Sg5?
- threat
- 2.Rf4#
- 2.Rd5#
- 1...Sd2+
- 2.Rxd2#
- 1...Qxc6
- 2.Qxf6#
- 1...Qxe7
- 2.Rd5#
- 1...Rxb7
- 2.Rd5#
- 1...Sxf2
- 2.Rd5#
- 1...fxg5
- 2.Rd5#
- 1...Rb5
- 2.Rf4#
- 1...Sbc3
- 2.Rd2#
- 1...Se3
- 2.Rf4#
- 2.fxe3#
- 1...d5
- 2.Qc5#
- 1...Sdc3!
- threat
- 1.Sxf6?
- threat
- 2.Rf4#
- 2.Rd5#
- 1...Sd2+
- 2.Rxd2#
- 1...Qxe7
- 2.Rd5#
- 1...Rxb7
- 2.Rd5#
- 1...Sxf2
- 2.Be3#
- 2.Rd5#
- 1...Rb5
- 2.Rf4#
- 1...Sbc3
- 2.Rd2#
- 1...Sdc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 2.Rf4#
- 2.fxe3#
- 1...d5
- 2.Qc5#
- 1...Qxc6!
- threat
- 1.Rc2?
- threat
- 2.Rc4#
- 1...Sd2+
- 2.Rxd2#
- 1...Qxc6
- 2.Qxf6#
- 1...Sa3
- 2.Rd2#
- 1...Sbc3
- 2.Rd2#
- 1...Sb2
- 2.Be3#
- 1...Sdc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 2.fxe3#
- 1...d5
- 2.Qc5#
- 1...Rxc6!
- threat
- 1.e3+?
- 1...Kd3
- 2.Be2#
- 2.Rd5#
- 1...Sxe3!
- 1...Kd3
- 1.Sd2?
- Keys
- 1.Sexd6!
- threat
- 2.Rf4#
- 2.Rd5#
- 1...Sd2+
- 2.Rxd2#
- 1...Qxc6
- 2.Qxf6#
- 1...Qxe7
- 2.Rd5#
- 1...Rxb7
- 2.Rd5#
- 1...Rxd6
- 2.Rf4#
- 1...Bxd6
- 2.Rd5#
- 1...Sxf2
- 2.Be3#
- 2.Rd5#
- 1...Rb5
- 2.Sxb5#
- 2.Rf4#
- 1...Sbc3
- 2.Rd2#
- 1...Sdc3
- 2.Be3#
- 1...Se3
- 2.Bxe3#
- 2.Rf4#
- 2.fxe3#
- threat
- 1.Sexd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- Q(k);N_GUARD,XP(I)::QAB(L),XP(g)
- Q(k);N_GUARD::QAB(L),XP(g)
- S(a);CHECK,N_GUARD::R(A),XS(a)
- S(a);N_GUARD::R(A)
- S(b);N_GUARD::B(J)
- P(f);OGATE::QAB1(L)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,OGATE,XS(G)::R(A),XS(a)
- Q(k);N_GUARD,XP(I)::QAB(L),XP(g)
- Q(k);XQ(L)::R1(H)
- R(e);XS(K)::R1(H)
- R(e);::R(H)
- S(b);N_GUARD::B(J)
- P(f);OGATE::QAB1(L)
- Refutation
- S(a);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- Q(k);N_GUARD,XP(I)::QAB(L),XP(g)
- Q(k);XQ(L)::R1(H)
- R(e);XS(K)::R1(H)
- S(a);N_GUARD,XS(G)::R(A)
- S(b);N_GUARD,XS(G)::B(J)
- P(f);OGATE::QAB1(L)
- Refutation
- P(c);CHECK,XS(G)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- Q(k);N_GUARD,XP(I)::QAB(L),XP(g)
- Q(k);XQ(L)::R1(H)
- R(e);XS(K)::R1(H)
- P(f);OGATE,XS(G)::QAB1(L),XP(f)
- S(a);N_GUARD::R(A)
- Refutation
- P(f);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- Q(k);N_GUARD,XP(I)::QAB(L),XP(g)
- Q(k);XQ(L)::R1(H)
- R(e);XS(K)::R1(H)
- S(b);XP(C)::R1(H)
- P(g);XS(G)::R1(H)
- R(e);::R(H)
- S(a);N_GUARD::R(A)
- P(f);OGATE::QAB1(L)
- Refutation
- S(b);
- Try
- S(G);XP(g)
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- Q(k);XQ(L)::R1(H)
- R(e);XS(K)::R1(H)
- R(e);::R(H)
- S(a);N_GUARD::R(A)
- S(b);N_GUARD::B(J)
- P(f);OGATE::QAB1(L)
- Refutation
- Q(k);XP(I)
- Try
- R(A);
- Threat
- R1(A)
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- Q(k);N_GUARD,XP(I)::QAB(L),XP(g)
- S(a);N_GUARD::R(A)
- S(b);N_GUARD::B(J)
- P(f);OGATE::QAB1(L)
- Refutation
- R(e);XP(I)
- Try
- P(B);CHECK
- Refutation
- S(b);XP(B)
- Try
- Actual
- S(G);XP(f)
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- Q(k);N_GUARD,XP(I)::QAB(L),XP(g)
- Q(k);XQ(L)::R1(H)
- R(e);XS(K)::R1(H)
- R(j);XS(G)::R(H)
- B(i);XS(G)::R1(H)
- S(a);N_GUARD::R(A)
- S(b);N_GUARD::B(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).