MESON Chess Problem Database
Problem Display
PID: 71882 (2Q3r1/Kb2pp1N/1p1R4/p4R2/3Bk3/3rP3/B1q3Pb/3N4 w - - 0 1)
Pries, Albert
Die Schwalbe, 1954
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Sf2#
- 1...Qb3
- 2.Sf2#
- 1...Qa4
- 2.Sf2#
- 1...Qc1
- 2.Sf2#
- 1...Qf2
- 2.Sxf2#
- 1...Qc3
- 2.Sf2#
- 1...Qc4
- 2.Sf2#
- 1...Qc5
- 2.Sf2#
- 1...Qc6
- 2.Sf2#
- 1...Qc7
- 2.Sf2#
- 1...Rxd4
- 2.Rxd4#
- 1...Rg3
- 2.Rf4#
- 2.Re5#
- 1...Rg5
- 2.Sxg5#
- 1...Rd8
- 2.Sg5#
- 1...Re8
- 2.Sg5#
- 1...Rf8
- 2.Sg5#
- 1...Rh8
- 2.Sg5#
- 1...Bg1
- 2.Rf4#
- 2.Re5#
- 1...Bf4
- 2.Rxf4#
- 1...Be5
- 2.Rxe5#
- 1...Bd5
- 2.Bxd5#
- 1...Ba6
- 2.Bd5#
- 1...exd6
- 2.Sf6#
- 1...e5
- 2.Sf6#
- 1...Qb1
- Tries
- 1.Rf1?
- threat
- 2.Qf5#
- 1...Rxc8
- 2.Sg5#
- 1...Bxc8
- 2.Bd5#
- 1...Qf2
- 2.Sxf2#
- 1...Qc5
- 2.Sf2#
- 1...Rg5
- 2.Sxg5#
- 1...Bf4
- 2.Rxf4#
- 1...e6
- 2.Sf6#
- 1...f5
- 2.Qxf5#
- 1...Qxc8!
- threat
- 1.Rb5?
- threat
- 2.Qf5#
- 1...Qxc8
- 2.Sf2#
- 1...Rxc8
- 2.Sg5#
- 1...Qf2
- 2.Sxf2#
- 2.Qxb7#
- 1...Qc5
- 2.Sf2#
- 1...Rg5
- 2.Sxg5#
- 1...Be5
- 2.Rxe5#
- 1...Bd5
- 2.Bxd5#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...f5
- 2.Qxf5#
- 1...Bxc8!
- threat
- 1.Rfd5?
- threat
- 2.Qf5#
- 1...Qxc8
- 2.Sf2#
- 1...Rxc8
- 2.Sg5#
- 1...Bxd5
- 2.Bxd5#
- 1...Qf2
- 2.Sxf2#
- 1...Rg5
- 2.Sxg5#
- 1...Be5
- 2.Rxe5#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...f5
- 2.Qxf5#
- 1...Bxc8!
- threat
- 1.Rg5?
- threat
- 2.Qf5#
- 1...Qxc8
- 2.Sf2#
- 1...Rxg5
- 2.Sxg5#
- 1...Bxc8
- 2.Bd5#
- 1...Qf2
- 2.Sxf2#
- 2.Qxb7#
- 1...Qc5
- 2.Sf2#
- 1...e6
- 2.Sf6#
- 1...f5
- 2.Qxf5#
- 1...Rxc8!
- threat
- 1.Rh5?
- threat
- 2.Qf5#
- 1...Qxc8
- 2.Sf2#
- 1...Bxc8
- 2.Bd5#
- 1...Qf2
- 2.Sxf2#
- 2.Qxb7#
- 1...Qc5
- 2.Sf2#
- 1...Rg5
- 2.Sxg5#
- 1...e6
- 2.Sf6#
- 1...f5
- 2.Qxf5#
- 1...Rxc8!
- threat
- 1.Rff6?
- threat
- 2.Qf5#
- 1...Qxc8
- 2.Sf2#
- 1...Rxc8
- 2.Sg5#
- 1...Bxc8
- 2.Bd5#
- 1...exf6
- 2.Sxf6#
- 1...Qf2
- 2.Sxf2#
- 2.Qxb7#
- 1...Qc5
- 2.Sf2#
- 1...Rg5
- 2.Sxg5#
- 1...e6!
- threat
- 1.Rxf7?
- threat
- 2.Qf5#
- 1...Qxc8
- 2.Sf2#
- 1...Rxc8
- 2.Sg5#
- 1...Bxc8
- 2.Bd5#
- 1...Qf2
- 2.Sxf2#
- 2.Qxb7#
- 1...Qc5
- 2.Sf2#
- 1...Rg5
- 2.Sxg5#
- 1...e6!
- threat
- 1.Qe6+?
- 1...Be5
- 2.Rf4#
- 2.Rxe5#
- 2.Qxe5#
- 1...fxe6!
- 1...Be5
- 1.Rf1?
- Keys
- 1.Rf3!
- threat
- 2.Qf5#
- 1...Qxc8
- 2.Sf2#
- 1...Rxc8
- 2.Sg5#
- 1...Bxc8
- 2.Bd5#
- 1...Qc5
- 2.Sf2#
- 1...Rg5
- 2.Sxg5#
- 1...Bf4
- 2.Rxf4#
- 1...e6
- 2.Sf6#
- 1...f5
- 2.Qxf5#
- threat
- 1.Rf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 19
- Sets
- Q(a);N_GUARD::S(A)
- Q(a);N_GUARD::S(A),XQ(a)
- R(c);OGATE,XB(E)::R1(G),XR(c)
- R(j);N_GUARD::S(I),XR(j)
- R(j);N_GUARD::S(I)
- B(b);N_GUARD::R1(F),XB(b)
- B(g);N_GUARD::B(B),XB(g)
- B(g);N_GUARD::B(B)
- P(h);N_GUARD,XR(G)::S(I)
- P(h);N_GUARD::S(I)
- Tries
- Try
- R(F);
- Threat
- QAB1(J)
- Vars
- R(j);N_GUARD,XQ(J)::S(I)
- B(g);N_GUARD,XQ(J)::B(B)
- Q(a);N_GUARD::S(A),XQ(a)
- Q(a);N_GUARD::S(A)
- R(j);N_GUARD::S(I),XR(j)
- B(b);N_GUARD::R1(F),XB(b)
- P(h);N_GUARD::S(I)
- P(i);::QAB1(J),XP(i)
- Refutation
- Q(a);XQ(J)
- Try
- R(F);
- Threat
- QAB1(J)
- Vars
- Q(a);N_GUARD,XQ(J)::S(A)
- R(j);N_GUARD,XQ(J)::S(I)
- Q(a);N_GUARD::S(A)
- R(j);N_GUARD::S(I),XR(j)
- B(b);N_GUARD::R1(F),XB(b)
- B(g);N_GUARD::B(B),XB(g)
- P(h);N_GUARD::S(I)
- P(i);::QAB1(J),XP(i)
- Refutation
- B(g);XQ(J)
- Try
- R(F);
- Threat
- QAB1(J)
- Vars
- Q(a);N_GUARD,XQ(J)::S(A)
- R(j);N_GUARD,XQ(J)::S(I)
- B(g);OGATE,XR(F)::B(B),XB(g)
- Q(a);N_GUARD::S(A),XQ(a)
- R(j);N_GUARD::S(I),XR(j)
- B(b);N_GUARD::R1(F),XB(b)
- P(h);N_GUARD::S(I)
- P(i);::QAB1(J),XP(i)
- Refutation
- B(g);XQ(J)
- Try
- R(F);
- Threat
- QAB1(J)
- Vars
- Q(a);N_GUARD,XQ(J)::S(A)
- R(j);XR(F)::S(I),XR(j)
- B(g);N_GUARD,XQ(J)::B(B)
- Q(a);N_GUARD::S(A)
- P(h);N_GUARD::S(I)
- P(i);::QAB1(J),XP(i)
- Refutation
- R(j);XQ(J)
- Try
- R(F);
- Threat
- QAB1(J)
- Vars
- Q(a);N_GUARD,XQ(J)::S(A)
- B(g);N_GUARD,XQ(J)::B(B)
- Q(a);N_GUARD::S(A)
- R(j);N_GUARD::S(I),XR(j)
- P(h);N_GUARD::S(I)
- P(i);::QAB1(J),XP(i)
- Refutation
- R(j);XQ(J)
- Try
- R(F);
- Threat
- QAB1(J)
- Vars
- Q(a);N_GUARD,XQ(J)::S(A)
- R(j);N_GUARD,XQ(J)::S(I)
- B(g);N_GUARD,XQ(J)::B(B)
- P(h);XR(F)::S(I),XP(h)
- Q(a);N_GUARD::S(A)
- R(j);N_GUARD::S(I),XR(j)
- Refutation
- P(h);
- Try
- R(F);XP(i)
- Threat
- QAB1(J)
- Vars
- Q(a);N_GUARD,XQ(J)::S(A)
- R(j);N_GUARD,XQ(J)::S(I)
- B(g);N_GUARD,XQ(J)::B(B)
- Q(a);N_GUARD::S(A)
- R(j);N_GUARD::S(I),XR(j)
- Refutation
- P(h);
- Try
- Q(J);CHECK
- Refutation
- P(i);XQ(J)
- Try
- Actual
- R(F);
- Threat
- QAB1(J)
- Vars
- Q(a);N_GUARD,XQ(J)::S(A)
- R(j);N_GUARD,XQ(J)::S(I)
- B(g);N_GUARD,XQ(J)::B(B)
- Q(a);N_GUARD::S(A)
- R(j);N_GUARD::S(I),XR(j)
- B(b);N_GUARD::R1(F),XB(b)
- P(h);N_GUARD::S(I)
- P(i);::QAB1(J),XP(i)
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).