MESON Chess Problem Database
Problem Display
PID: 261556 (1K1Qb1rb/2p1B3/Np2k3/r3P2p/p2PP3/7N/2q5/5R2 w - - 0 1)
Kupper, Josef
Neue Zurcher Zeitung, 1956
#2
9 + 10
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Sxc7#
- 1...Qd1
- 2.Sxc7#
- 1...Qb3
- 2.Sxc7#
- 1...Qd3
- 2.Sxc7#
- 1...Qxe4
- 2.Sxc7#
- 1...Qa2
- 2.Sxc7#
- 1...Qb2
- 2.Sxc7#
- 1...Qd2
- 2.Sxc7#
- 1...Qe2
- 2.Sxc7#
- 1...Qg2
- 2.Sxc7#
- 1...Qh2
- 2.Sxc7#
- 1...Rd5
- 2.exd5#
- 1...Rg5
- 2.Sxg5#
- 1...Rg7
- 2.Rf6#
- 1...Rf8
- 2.Sg5#
- 1...Bc6
- 2.Sxc7#
- 1...Bg6
- 2.Sg5#
- 1...Bf7
- 2.Sf4#
- 1...Bf6
- 2.Rxf6#
- 1...Bg7
- 2.Sg5#
- 1...c5
- 2.Sc7#
- 2.Qd6#
- 1...c6
- 2.Sc7#
- 2.Qd6#
- 1...Qb1
- Tries
- 1.Bf8?
- threat
- 2.Qe7#
- 2.Qxe8#
- 1...Qxe4
- 2.Sxc7#
- 1...Rxf8
- 2.Sg5#
- 1...Bf6
- 2.Rxf6#
- 1...Qc6
- 2.Qe7#
- 1...Rg7
- 2.Rf6#
- 1...Bb5
- 2.Qe7#
- 2.Qd5#
- 1...Bc6
- 2.Sxc7#
- 2.Qe7#
- 1...Bg6
- 2.Sg5#
- 2.Qe7#
- 2.Qc8#
- 1...Bd7
- 2.Qe7#
- 1...Bf7
- 2.Sf4#
- 2.Qe7#
- 2.Qc8#
- 1...Qc5!
- threat
- 1.Qxe8?
- threat
- 2.Sf4#
- 2.Bf8#
- 1...Qxe4
- 2.Sxc7#
- 1...Bxe5
- 2.Bf8#
- 1...Qc5
- 2.Sf4#
- 1...Qc1
- 2.Bf8#
- 1...Qd2
- 2.Sxc7#
- 2.Bf8#
- 1...Qf2
- 2.Sxc7#
- 2.Bf8#
- 1...Qh2
- 2.Sxc7#
- 2.Bf8#
- 1...Qc6
- 2.Sf4#
- 1...Rg4
- 2.Ba3#
- 2.Bb4#
- 2.Bh4#
- 2.Bc5#
- 2.Bg5#
- 2.Bd6#
- 2.Bf6#
- 2.Bd8#
- 2.Bf8#
- 1...Rg7
- 2.Sf4#
- 2.Rf6#
- 1...Rf8
- 2.Sg5#
- 2.Bxf8#
- 1...Bf6
- 2.Sf4#
- 2.Rxf6#
- 1...Rxe8+!
- threat
- 1.Bf8?
- Keys
- 1.Bd6!
- threat
- 2.Qe7#
- 1...Qxe4
- 2.Sxc7#
- 1...cxd6
- 2.Qxd6#
- 1...Bf6
- 2.Rxf6#
- 1...Rg7
- 2.Rf6#
- 1...Bb5
- 2.d5#
- 1...Bc6
- 2.Sxc7#
- 1...Bg6
- 2.Sg5#
- 1...Bd7
- 2.Qxg8#
- 1...Bf7
- 2.Sf4#
- threat
- 1.Bd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 14
- Sets
- Q(a);N_GUARD::S(F),XP(g)
- Q(a);N_GUARD,XP(D)::S(F),XP(g)
- R(c);OGATE::P(D),XR(c)
- R(i);N_GUARD::S(B),XR(i)
- R(i);S_CUTB(j)::R1(A)
- R(i);N_GUARD::S(B)
- B(h);P_PINQ(I),S_CUTQ(a)::S(F),XP(g)
- B(h);P_PINQ(I),S_CUTR(i)::S(B)
- B(h);P_PINQ(I),SBLOCK::S(B)
- B(j);N_GUARD::R1(A),XB(j)
- B(j);S_CUTR(i)::S(B)
- Tries
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XP(D)::S(F),XP(g)
- R(i);N_GUARD,XB(G)::S(B)
- B(j);N_GUARD::R1(A),XB(j)
- Q(a);::QAR1(I)
- R(i);S_CUTB(j)::R1(A)
- B(h);::QAR1(I)
- Refutation
- Q(a);
- Try
- Q(I);P_SPINQ(I),XB(h)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XP(D)::S(F),XP(g)
- B(j);XP(E)::QAR(I)+B(G)
- Q(a);::S(B)
- Q(a);::QAR(I)+B(G)
- Refutation
- R(i);CHECK,XQ(I)
- Try
- Actual
- B(G);
- Threat
- QAR1(I)
- Vars
- Q(a);N_GUARD,XP(D)::S(F),XP(g)
- P(g);OGATE,XB(G)::QAR1(I),XP(g)
- B(j);N_GUARD::R1(A),XB(j)
- R(i);S_CUTB(j)::R1(A)
- B(h);P_PINQ(I),S_CUTR(c)::P(C)
- B(h);P_PINQ(I),S_CUTQ(a)::S(F),XP(g)
- B(h);P_PINQ(I),S_CUTR(i)::S(B)
- B(h);OGATE,P_PINQ(I),SBLOCK::QAB(I),XR(i)
- B(h);P_PINQ(I),SBLOCK::S(B)
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).