MESON Chess Problem Database
Problem Display
PID: 254438 (nb5B/5q2/2Q5/3pn3/R1pkpP2/2pPNp2/5K2/2r1RB2 w - - 0 1)
Buchwald, Julius
Die Schwalbe, 1966
#2
9 + 11
SOLUTION
- SOUND
- Sets
- 1...Qh5
- 2.Qxd5#
- 1...Qg6
- 2.Qxd5#
- 1...Qe8
- 2.Sf5#
- 2.Qxd5#
- 1...Qg8
- 2.Sf5#
- 1...Qxf4
- 2.Qxd5#
- 1...Qf5
- 2.Sxf5#
- 2.Qxd5#
- 1...Qf6
- 2.Qxd5#
- 1...Qa7
- 2.Sf5#
- 2.Qxd5#
- 1...Qb7
- 2.Sf5#
- 1...Qc7
- 2.Sf5#
- 2.Qxd5#
- 1...Qe7
- 2.Sf5#
- 2.Qxd5#
- 1...Qg7
- 2.Sf5#
- 2.Qxd5#
- 1...Qh7
- 2.Qxd5#
- 1...Qf8
- 2.Qxd5#
- 1...Ra1
- 2.Sc2#
- 1...Rb1
- 2.Sc2#
- 1...Rd1
- 2.Sc2#
- 1...Rxe1
- 2.Sc2#
- 1...Rc2+
- 2.Sxc2#
- 1...Ba7
- 2.Bxe5#
- 1...Sb6
- 2.Qxb6#
- 1...Sc7
- 2.Bxe5#
- 2.Qb6#
- 1...Qh5
- Tries
- 1.Qd6?
- threat
- 2.Bxe5#
- 2.Rxc4#
- 1...Rc2+
- 2.Sxc2#
- 1...Qxf4
- 2.Rxc4#
- 2.Qxd5#
- 1...exd3
- 2.Rxc4#
- 1...Qe6
- 2.Rxc4#
- 1...Qh5
- 2.Rxc4#
- 2.Qxd5#
- 1...Qe8
- 2.Sf5#
- 2.Rxc4#
- 2.Qxd5#
- 1...Qf5
- 2.Sxf5#
- 2.Rxc4#
- 2.Qxd5#
- 1...Qf6
- 2.Qxd5#
- 1...Qc7
- 2.Sf5#
- 2.Bxe5#
- 2.Qxd5#
- 1...Qe7
- 2.Sf5#
- 2.Rxc4#
- 2.Qxd5#
- 1...Qg7
- 2.Sf5#
- 2.Qxd5#
- 1...Sb6
- 2.Bxe5#
- 2.Qxb6#
- 1...Bxd6!
- threat
- 1.dxc4?
- threat
- 2.cxd5#
- 2.c5#
- 1...Rc2+
- 2.Sxc2#
- 1...c2
- 2.cxd5#
- 1...Qf6
- 2.Qxd5#
- 1...Qa7
- 2.Sf5#
- 2.Qxd5#
- 1...Qb7
- 2.Sf5#
- 1...Qe7
- 2.Sf5#
- 2.Qxd5#
- 2.c5#
- 1...Qg7
- 2.Sf5#
- 2.Qxd5#
- 1...Qf8
- 2.Qxd5#
- 2.c5#
- 1...Ra1
- 2.Sc2#
- 1...Rb1
- 2.Sc2#
- 1...Bd6
- 2.c5#
- 1...Sb6
- 2.Qxb6#
- 1...dxc4!
- threat
- 1.Qd6?
- Keys
- 1.Sxc4!
- threat
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sxe5#
- 2.Sb6#
- 2.Sd6#
- 1...Rc2+
- 2.Sd2#
- 1...e3+
- 2.Sxe3#
- 1...dxc4
- 2.Rxe4#
- 1...Qf6
- 2.Sxe5#
- 1...Qa7
- 2.Sa5#
- 1...Qb7
- 2.Sb6#
- 1...Qe7
- 2.Sd6#
- 1...Qg7
- 2.Sxe5#
- 1...Qf8
- 2.Sd6#
- 1...Ra1
- 2.Sa3#
- 1...Rb1
- 2.Sb2#
- 1...Bd6
- 2.Sxd6#
- 1...Sb6
- 2.Sxb6#
- 2.Qxb6#
- threat
- 1.Sxc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 6
- REMOVED MATES = 9
- Sets
- Q(i);N_GUARD::QAR1(H),XP(g)
- Q(i);N_GUARD::S(E)
- Q(i);N_GUARD,XP(G)::QAR1(H),XP(g)
- Q(i);N_GUARD,N_SPINS(h)::QAR1(H),XP(g)
- R(a);N_GUARD::S(E)
- R(a);N_GUARD,XR(A)::S(E)
- R(a);CHECK,N_GUARD::S(E),XR(a)
- B(k);N_GUARD::B(I),XS(h)
- S(j);N_GUARD::QAB(H),XS(j)
- Tries
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,N_GUARD::S(E),XR(a)
- P(f);XP(D)::R1(F),XP(d)
- Q(i);::R1(F),XP(d)
- Q(i);N_GUARD,N_SPINS(h)::QAR1(H),XP(g)
- Refutation
- B(k);XQ(H)
- Try
- P(D);XP(d)
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,N_GUARD::S(E),XR(a)
- P(b);::R(F)+P(D),XP(g)
- Q(i);N_GUARD,N_SPINS(h)::QAR1(H),XP(g)
- Q(i);N_GUARD::S(E)
- R(a);N_GUARD::S(E)
- B(k);::R(F)+P(D)
- S(j);N_GUARD::QAB(H),XS(j)
- Refutation
- P(g);P_SPINP(g),XP(D)
- Try
- Actual
- S(E);XP(d)
- Threat
- DUALS(8)
- Vars
- R(a);CHECK::R(F)+S(E)
- P(f);CHECK::R(F)+S(E),XP(f)
- P(g);N_GUARD,P_SPINP(g),XS(E)::R1(A),XP(f)
- Q(i);N_SPINS(h)::R(F)+S(E),XS(h)
- Q(i);::R(F)+S(E)
- R(a);::R(F)+S(E)
- B(k);::R(F)+S(E),XB(k)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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