MESON Chess Problem Database
Problem Display
PID: 196781 (1B1r4/7q/2P1R2r/NR1p1nN1/2Bk3p/2p1p2P/Q5Kb/n2b4 w - - 0 1)
Zepler, Erich Ernest
1st HM., Otto Fuss Ty., 1919
#2
10 + 12
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qg6
- 2.Ba7#
- 1...Qg8
- 2.Ba7#
- 1...Qa7
- 2.Bxa7#
- 1...Qh8
- 2.Ba7#
- 1...Rxb8
- 2.Rxd5#
- 1...Rc8
- 2.Rxd5#
- 1...Re8
- 2.Rxd5#
- 1...Rf8
- 2.Rxd5#
- 1...Rg8
- 2.Rxd5#
- 1...Rh8
- 2.Rxd5#
- 1...Bc2
- 2.Sf3#
- 1...Bb3
- 2.Sf3#
- 1...Bf3+
- 2.Sxf3#
- 1...Ba4
- 2.Sf3#
- 1...Bg1
- 2.Be5#
- 1...Be5
- 2.Bxe5#
- 1...Bd6
- 2.Rxd5#
- 1...Sg3
- 2.Be5#
- 1...Sd6
- 2.Rxd5#
- 1...Se7
- 2.Ba7#
- 1...Sg7
- 2.Ba7#
- 1...c2
- 2.Qxa1#
- 2.Qb2#
- 1...e2
- 2.Sf3#
- 1...dxc4
- 2.Qxc4#
- 1...Qg6
- Tries
- 1.Bd6?
- threat
- 2.Bc5#
- 2.Rxd5#
- 1...Bf3+
- 2.Sxf3#
- 1...Rxe6
- 2.Rxd5#
- 1...Bxd6
- 2.Rxd5#
- 1...Sxd6
- 2.Rxd5#
- 1...dxc4
- 2.Qxc4#
- 1...c2
- 2.Qxa1#
- 2.Qb2#
- 1...Qa7
- 2.Rxd5#
- 1...Qe7
- 2.Rxd5#
- 1...Sb3
- 2.Rxd5#
- 1...Se7
- 2.Bc5#
- 1...Rxd6!
- threat
- 1.Qb1?
- threat
- 2.Qd3#
- 2.Qxd1#
- 1...Bf3+
- 2.Sxf3#
- 1...dxc4
- 2.Re4#
- 2.Qe4#
- 2.Qxd1#
- 1...c2
- 2.Qxa1#
- 2.Qb2#
- 1...Bc2
- 2.Sf3#
- 1...Bb3
- 2.Sf3#
- 2.Qd3#
- 1...Ba4
- 2.Sf3#
- 2.Qd3#
- 1...Bg4
- 2.Qd3#
- 1...Bh5
- 2.Qd3#
- 1...Sc2
- 2.Qxd1#
- 1...Sb3
- 2.Qd3#
- 1...Sg3
- 2.Be5#
- 1...Sd6
- 2.Rxd5#
- 1...Se7
- 2.Ba7#
- 1...Sg7
- 2.Ba7#
- 1...e2
- 2.Sf3#
- 2.Qd3#
- 1...Be2!
- threat
- 1.Qe2?
- threat
- 2.Sf3#
- 2.Qxd1#
- 2.Qd3#
- 1...Rxe6
- 2.Qxd1#
- 2.Qd3#
- 1...dxc4
- 2.Sf3#
- 2.Re4#
- 2.Qxd1#
- 2.Qxc4#
- 1...c2
- 2.Qd3#
- 1...Qg6
- 2.Ba7#
- 2.Qxd1#
- 2.Qd3#
- 1...Qg8
- 2.Ba7#
- 2.Qxd1#
- 2.Qd3#
- 1...Qg7
- 2.Qxd1#
- 2.Qd3#
- 1...Rg6
- 2.Qxd1#
- 2.Qd3#
- 1...Rg8
- 2.Rxd5#
- 2.Qxd1#
- 2.Qd3#
- 1...Bc2
- 2.Sf3#
- 1...Bb3
- 2.Sf3#
- 2.Qd3#
- 1...Ba4
- 2.Sf3#
- 2.Qd3#
- 1...Be5
- 2.Bxe5#
- 2.Qxd1#
- 2.Qd3#
- 1...Sb3
- 2.Sf3#
- 2.Qd3#
- 1...Sg3
- 2.Sf3#
- 2.Be5#
- 2.Qxe3#
- 1...Sd6
- 2.Sf3#
- 2.Rxd5#
- 2.Qxe3#
- 1...Se7
- 2.Sf3#
- 2.Ba7#
- 2.Qxe3#
- 1...Sg7
- 2.Sf3#
- 2.Ba7#
- 2.Qxe3#
- 1...Bxe2!
- threat
- 1.Bd6?
- Keys
- 1.Qa4!
- threat
- 2.Qxd1#
- 1...Bf3+
- 2.Sxf3#
- 1...Bxa4
- 2.Sf3#
- 1...c2
- 2.Qxa1#
- 1...Be2
- 2.Bxe2#
- 1...Bc2
- 2.Sf3#
- 1...Bb3
- 2.Sf3#
- 1...Bg4
- 2.Bf1#
- 2.Be2#
- 1...Bh5
- 2.Bf1#
- 2.Be2#
- 1...Sc2
- 2.Sb3#
- 1...Sb3
- 2.Bf1#
- 2.Be2#
- 1...Sg3
- 2.Be5#
- 1...Sd6
- 2.Rxd5#
- 1...Se7
- 2.Ba7#
- 1...Sg7
- 2.Ba7#
- 1...e2
- 2.Sf3#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 14
- Sets
- Q(k);N_GUARD,P_PINS(G)::B(J)
- Q(k);N_GUARD::B(J),XQ(k)
- Q(k);N_GUARD::B(J)
- R(l);N_GUARD,XB(J)::R1(F),XP(h)
- R(l);N_GUARD::R1(F),XP(h)
- R(l);N_GUARD,P_PINS(G)::R1(F),XP(h)
- B(b);N_GUARD::S(G)
- B(b);CHECK,N_GUARD::S(G),XB(b)
- B(c);N_GUARD::B(J)
- B(c);N_GUARD::B(J),XB(c)
- B(c);S_CUTR(l)::R1(F),XP(h)
- S(i);S_CUTB(c)::B(J)
- S(i);S_CUTR(l)::R1(F),XP(h)
- S(i);S_CUTQ(k)::B(J)
- P(e);S_CUTB(b)::S(G)
- P(h);OGATE,XB(D)::QAR1(A),XP(h)
- Tries
- Try
- B(J);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,N_GUARD::S(G),XB(b)
- R(j);XR(I)::R1(F),XP(h)
- B(c);XB(J)::R1(F),XP(h)
- S(i);XB(J)::R1(F),XP(h)
- P(h);OGATE,XB(D)::QAR1(A),XP(h)
- Q(k);::R1(F),XP(h)
- S(a);::R1(F),XP(h)
- S(i);::B(J)
- Refutation
- R(l);XB(J)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,N_GUARD::S(G),XB(b)
- B(b);N_GUARD::S(G)
- B(b);::QAR1(A)
- S(a);::QAR(A),XB(b)
- S(a);::QAR1(A)
- S(i);S_CUTB(c)::B(J)
- S(i);S_CUTR(l)::R1(F),XP(h)
- S(i);S_CUTQ(k)::B(J)
- Refutation
- B(b);
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- P(d);::QAR1(A)
- B(b);::S(G)
- Refutation
- B(b);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- QAR(A),XB(b)
- Vars
- B(b);CHECK,N_GUARD::S(G),XB(b)
- B(b);N_GUARD,XQ(A)::S(G)
- P(d);OGATEB::QAB(A),XS(a)
- B(b);N_GUARD::QAR(A)+B(D),XB(b)
- B(b);N_GUARD::S(G)
- S(a);N_GUARD,S_CUTB(b)::S(E)
- S(i);S_CUTB(c)::B(J)
- S(i);S_CUTR(l)::R1(F),XP(h)
- S(i);S_CUTQ(k)::B(J)
- P(e);S_CUTB(b)::S(G)
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).