MESON Chess Problem Database
Problem Display
PID: 173793 (1K4R1/PpRBPbQ1/4n2r/1n1kB2P/3P4/b2Pp2q/1r3PN1/1N6 w - - 0 1)
Fortsch, M
Boletim da UBP, 1984
#2
14 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxg2
- 2.Qxg2#
- 1...Qg4
- 2.Sxe3#
- 1...Qf5
- 2.Sxe3#
- 1...Qh1
- 2.Sxe3#
- 1...Qh2
- 2.Sxe3#
- 1...Qh4
- 2.Sxe3#
- 1...Qxh5
- 2.Sxe3#
- 1...Sc3
- 2.Sxc3#
- 1...Sbxd4
- 2.Sc3#
- 1...Sd6
- 2.Sc3#
- 1...Sxa7
- 2.Sc3#
- 1...Sbxc7
- 2.Sc3#
- 1...Sexd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Sg5
- 2.Sf4#
- 1...Sexc7
- 2.Sf4#
- 1...Sxg7
- 2.Sf4#
- 1...Sd8
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...b6
- 2.Bc6#
- 2.a8Q#
- 2.a8B#
- 1...Qxg2
- Tries
- 1.Bxb5?
- threat
- 2.Sc3#
- 2.Bc4#
- 1...Rxb1
- 2.Bc4#
- 1...Rxb5
- 2.Sc3#
- 1...Sxd4
- 2.Sf4#
- 2.Bc4#
- 1...Sxc7
- 2.Sf4#
- 1...Sxg7
- 2.Sf4#
- 2.Bc4#
- 1...Sf4
- 2.Sxf4#
- 2.Bc4#
- 1...Sc5
- 2.Sf4#
- 2.Bc4#
- 1...Sg5
- 2.Sf4#
- 2.Bc4#
- 1...Sd8
- 2.Sf4#
- 2.Bc4#
- 1...Sf8
- 2.Sf4#
- 2.Bc4#
- 1...Rb3
- 2.Bc4#
- 1...Rb4
- 2.Sc3#
- 2.Rd7#
- 1...Bb4
- 2.Bc4#
- 1...Rc2!
- threat
- 1.Bxe6+?
- 1...Qxe6
- 2.Sxe3#
- 2.Sf4#
- 1...Rxe6
- 2.Sf4#
- 1...Bxe6
- 2.Sf4#
- 1...Kxe6!
- 1...Qxe6
- 1.Rc5+?
- 1...Sxc5
- 2.Sf4#
- 1...Bxc5!
- 1...Sxc5
- 1.Rd8?
- threat
- 2.Bc6#
- 1...Sbxd4
- 2.Sc3#
- 1...Sbxc7
- 2.Sc3#
- 1...Sexd4
- 2.Sf4#
- 1...Sexc7
- 2.Sf4#
- 1...Sxg7
- 2.Sf4#
- 1...Sxd8
- 2.Sf4#
- 1...Sd6
- 2.Sc3#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Sg5
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...Bd6!
- threat
- 1.a8Q?
- threat
- 2.Qxb7#
- 1...Sbxd4
- 2.Sc3#
- 1...Sbxc7
- 2.Sc3#
- 1...Sexd4
- 2.Sf4#
- 1...Sexc7
- 2.Sf4#
- 1...Sxg7
- 2.Sf4#
- 1...Sc3
- 2.Sxc3#
- 1...Sd6
- 2.Sc3#
- 1...Sa7
- 2.Sc3#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Sg5
- 2.Sf4#
- 1...Sd8
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...Rc2!
- threat
- 1.a8S?
- threat
- 2.Sb6#
- 1...Sbxd4
- 2.Sc3#
- 1...Sbxc7
- 2.Sc3#
- 1...Sexd4
- 2.Sf4#
- 1...Sexc7
- 2.Sf4#
- 1...Sxg7
- 2.Sf4#
- 1...Sc3
- 2.Sxc3#
- 1...Sd6
- 2.Sc3#
- 1...Sa7
- 2.Sc3#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Sg5
- 2.Sf4#
- 1...Sd8
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...b6
- 2.Sxb6#
- 2.Bc6#
- 1...Bc5!
- threat
- 1.a8B?
- threat
- 2.Bxb7#
- 1...Sbxd4
- 2.Sc3#
- 1...Sbxc7
- 2.Sc3#
- 1...Sexd4
- 2.Sf4#
- 1...Sexc7
- 2.Sf4#
- 1...Sxg7
- 2.Sf4#
- 1...Sc3
- 2.Sxc3#
- 1...Sd6
- 2.Sc3#
- 1...Sa7
- 2.Sc3#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Sg5
- 2.Sf4#
- 1...Sd8
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...Rc2!
- threat
- 1.Bxb5?
- Keys
- 1.Qg4!
- threat
- 2.Qe4#
- 1...Qxg2
- 2.Qxg2#
- 1...Qxg4
- 2.Sxe3#
- 1...Qf3
- 2.Qxf3#
- 1...Qh4
- 2.Sxe3#
- 1...Bg6
- 2.Bxe6#
- 1...Sc3
- 2.Sxc3#
- 1...Sd6
- 2.Sc3#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Sg5
- 2.Sf4#
- threat
- 1.Qg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- Q(d);OGATE,XS(C)::QAB(L),XQ(d)
- Q(d);N_GUARD::S(C),XP(c)
- Q(d);N_GUARD,XP(G)::S(C),XP(c)
- S(e);N_GUARD::S(A),XS(e)
- S(e);N_GUARD,XP(E)::S(A)
- S(e);N_GUARD::S(A)
- S(e);N_GUARD,XP(H)::S(A)
- S(e);N_GUARD,XR(I)::S(A)
- S(g);N_GUARD,XP(E)::S(C)
- S(g);N_GUARD::S(C),XS(g)
- S(g);N_GUARD::S(C)
- S(g);N_GUARD,XR(I)::S(C)
- S(g);N_GUARD,XQ(L)::S(C)
- Tries
- Try
- B(J);XS(e)
- Threat
- DUALS(2)
- Vars
- R(a);XS(A)::B(J)
- R(a);XB(J)::S(A)
- S(g);N_GUARD,XR(I)::S(C)
- R(a);::B(J)
- B(b);::B(J)
- Refutation
- R(a);
- Try
- B(J);CHECK,XS(g)
- Vars
- R(h);XB(J)::S(C)
- B(j);XB(J)::S(C)
- Refutation
- K(f);S_FLIGHT,XB(J)
- Try
- R(I);CHECK
- Vars
- S(g);XR(I)::S(C)
- Refutation
- B(b);XR(I)
- Try
- R(N);
- Threat
- R(N)+B(J),DCHECK
- Vars
- S(e);N_GUARD,XP(E)::S(A)
- S(e);N_GUARD,XR(I)::S(A)
- S(g);N_GUARD,XP(E)::S(C)
- S(g);N_GUARD,XR(I)::S(C)
- S(g);N_GUARD,XQ(L)::S(C)
- S(g);N_GUARD,XR(N)::S(C)
- S(e);N_GUARD::S(A)
- S(g);N_GUARD::S(C),XS(g)
- S(g);N_GUARD::S(C)
- Refutation
- B(b);P_PINR(I)
- Try
- P(H);P_PINP(i)
- Threat
- QAB(H),XP(i)
- Vars
- S(e);N_GUARD,XP(E)::S(A)
- S(e);N_GUARD,XR(I)::S(A)
- S(g);N_GUARD,XP(E)::S(C)
- S(g);N_GUARD,XR(I)::S(C)
- S(g);N_GUARD,XQ(L)::S(C)
- S(e);N_GUARD::S(A),XS(e)
- S(e);N_GUARD::S(A)
- S(g);N_GUARD::S(C),XS(g)
- S(g);N_GUARD::S(C)
- Refutation
- R(a);
- Try
- P(H);
- Threat
- S(H)
- Vars
- S(e);N_GUARD,XP(E)::S(A)
- S(e);N_GUARD,XR(I)::S(A)
- S(g);N_GUARD,XP(E)::S(C)
- S(g);N_GUARD,XR(I)::S(C)
- S(g);N_GUARD,XQ(L)::S(C)
- S(e);N_GUARD::S(A),XS(e)
- S(e);N_GUARD::S(A)
- S(g);N_GUARD::S(C),XS(g)
- S(g);N_GUARD::S(C)
- Refutation
- B(b);
- Try
- P(H);P_PINP(i)
- Threat
- B(H),XP(i)
- Vars
- S(e);N_GUARD,XP(E)::S(A)
- S(e);N_GUARD,XR(I)::S(A)
- S(g);N_GUARD,XP(E)::S(C)
- S(g);N_GUARD,XR(I)::S(C)
- S(g);N_GUARD,XQ(L)::S(C)
- S(e);N_GUARD::S(A),XS(e)
- S(e);N_GUARD::S(A)
- S(g);N_GUARD::S(C),XS(g)
- S(g);N_GUARD::S(C)
- Refutation
- R(a);
- Try
- Actual
- Q(L);
- Threat
- QAB1(L)
- Vars
- Q(d);OGATE,XS(C)::QAB(L),XQ(d)
- Q(d);N_GUARD,XQ(L)::S(C),XP(c)
- Q(d);N_GUARD::QAB(L),XQ(d)
- Q(d);N_GUARD::S(C),XP(c)
- B(j);N_GUARD,S_CUTR(h)::B(J),XS(g)
- S(e);N_GUARD::S(A),XS(e)
- S(e);N_GUARD::S(A)
- S(g);N_GUARD::S(C),XS(g)
- S(g);N_GUARD::S(C)
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).