MESON Chess Problem Database
Problem Display
PID: 162883 (4R2K/1p6/3PBQ2/1pp1N3/bRqNk3/2p2p1n/6P1/2B1n3 w - - 0 1)
Kettner, Karl Werner
Welt im Bild, 1933
(First published on Sun Jul 23 1933)
#2
10 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Qf5#
- 1...Qa2
- 2.Qf5#
- 1...Qe2
- 2.Qf5#
- 1...Qb3
- 2.Qf5#
- 1...Qd3
- 2.Qf5#
- 1...Qd5
- 2.Bf5#
- 2.Qf5#
- 1...Qxd4
- 2.Qf5#
- 1...Sg1
- 2.Qf4#
- 1...Sf2
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sg5
- 2.Qf4#
- 1...cxd4
- 2.Qf5#
- 1...Qf1
- Tries
- 1.Sdxf3?
- threat
- 2.Qf5#
- 2.Qg6#
- 1...Sf4
- 2.Qxf4#
- 2.Qf5#
- 1...Sxf3!
- threat
- 1.Sxb5?
- threat
- 2.Rxc4#
- 2.Qf5#
- 1...Qxb4
- 2.Qf5#
- 1...cxb4
- 2.Qf5#
- 1...Qd4
- 2.Sxc3#
- 2.Qf5#
- 1...Bb3
- 2.Qf5#
- 1...Sc2
- 2.Qf5#
- 2.gxf3#
- 1...Bxb5!
- threat
- 1.Sdc6?
- threat
- 2.Qf5#
- 2.Qg6#
- 1...Sf4
- 2.Qxf4#
- 2.Qf5#
- 1...bxc6!
- threat
- 1.Sg4?
- threat
- 2.Bxc4#
- 1...Kd3
- 2.Bf5#
- 1...Qxe6
- 2.Qf5#
- 1...Qxb4
- 2.Bc4#
- 1...Qf1
- 2.Bc4#
- 2.Qf5#
- 2.Qg6#
- 1...Qa2
- 2.Bc4#
- 2.Qf5#
- 2.Qg6#
- 1...Qe2
- 2.Bc4#
- 2.Qf5#
- 2.Qg6#
- 1...Qb3
- 2.Bc4#
- 2.Qf5#
- 2.Qg6#
- 1...Qd3
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bf7#
- 2.Bg8#
- 2.Qe5#
- 2.Qf5#
- 2.Qg6#
- 1...Qd5
- 2.Bf5#
- 1...Sd3
- 2.gxf3#
- 1...Sf4
- 2.Sf2#
- 1...Sg5
- 2.Sf2#
- 1...Qxd4!
- threat
- 1.Sec6?
- threat
- 2.Bxc4#
- 2.Qf5#
- 2.Qg6#
- 1...Kd3
- 2.Bf5#
- 2.Qf5#
- 2.Qg6#
- 1...Qxe6
- 2.Qf5#
- 1...Qxb4
- 2.Bc4#
- 2.Qf5#
- 2.Qg6#
- 1...bxc6
- 2.Bxc4#
- 1...Qf1
- 2.Bc4#
- 2.Qf5#
- 2.Qg6#
- 1...Qa2
- 2.Bc4#
- 2.Qf5#
- 2.Qg6#
- 1...Qe2
- 2.Bc4#
- 2.Qf5#
- 2.Qg6#
- 1...Qb3
- 2.Bc4#
- 2.Qf5#
- 2.Qg6#
- 1...Qd3
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bf7#
- 2.Bg8#
- 2.Qe5#
- 2.Qf5#
- 2.Qg6#
- 1...Qd5
- 2.Bf5#
- 1...Sd3
- 2.Qxf3#
- 2.Qf5#
- 2.Qg6#
- 2.gxf3#
- 1...Sf4
- 2.Qf5#
- 1...Sg5
- 2.Qf5#
- 2.Qg6#
- 1...Qxd4!
- threat
- 1.Bxc4?
- threat
- 2.Sd3#
- 2.Sexf3#
- 2.Sg4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Kxd4
- 2.Sd3#
- 2.Sxf3#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...fxg2
- 2.Sd3#
- 2.Sef3#
- 2.Sg4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...Sf4
- 2.Qxf4#
- 1...Sd3
- 2.Sxd3#
- 1...Sg5
- 2.Qf4#
- 1...f2
- 2.Sd3#
- 2.Sef3#
- 2.Sg4#
- 2.Sec6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...bxc4!
- threat
- 1.Rxc4?
- threat
- 2.Sxb5#
- 2.Qf5#
- 1...cxd4
- 2.Qf5#
- 1...Bb3
- 2.Qf5#
- 1...Sc2
- 2.Qf5#
- 2.gxf3#
- 1...b4
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sdxf3#
- 2.Sb5#
- 2.Sf5#
- 2.Sdc6#
- 2.Qf5#
- 1...bxc4!
- threat
- 1.Qh4+?
- 1...Sf4
- 2.Qxf4#
- 1...Kxe5!
- 1...Sf4
- 1.Sdxf3?
- Keys
- 1.Sd3!
- threat
- 2.Bxc4#
- 1...Kxd3
- 2.Bf5#
- 1...Qxd3
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bf7#
- 2.Bg8#
- 2.Qf5#
- 1...Qxe6
- 2.Qf5#
- 1...Qxb4
- 2.Bc4#
- 1...Qxd4
- 2.Sxc5#
- 1...Sxd3
- 2.gxf3#
- 1...Qa2
- 2.Sxc5#
- 2.Bc4#
- 2.Qf5#
- 2.Qg6#
- 1...Qb3
- 2.Sxc5#
- 2.Bc4#
- 2.Qf5#
- 2.Qg6#
- 1...Qd5
- 2.Bf5#
- 1...Sf4
- 2.Sf2#
- 1...Sg5
- 2.Sf2#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 5
- REMOVED MATES = 8
- Sets
- Q(f);::QAB1(H)
- Q(f);P_SPINQ(f),XS(D)::QAB1(H)
- S(d);N_GUARD::QAR1(H)
- S(d);N_GUARD::QAR1(H),XS(d)
- P(i);SBLOCK,XS(D)::QAB1(H)
- Tries
- Try
- S(D);P_PINQ(f),XP(c)
- Threat
- DUALS(2)
- Refutation
- S(a);XS(D)
- Try
- S(D);P_PINQ(f),XP(h)
- Threat
- DUALS(2)
- Vars
- Q(f);N_SPINQ(f),XR(C)::QAB1(H)
- P(i);N_SPINQ(f),XR(C)::QAB1(H)
- B(e);::QAB1(H)
- Refutation
- B(e);XS(D)
- Try
- S(D);P_PINQ(f)
- Threat
- DUALS(2)
- Refutation
- P(j);XS(D)
- Try
- S(E);
- Threat
- R(I)+B(G),XQ(f)
- Vars
- K(g);S_FLIGHT::B(G)
- Q(f);P_SPINQ(f),XB(G)::QAB1(H)
- Q(f);XR(C)::R(I)+B(G)
- Q(f);SBLOCK::R(I)+B(G),DCHECK
- S(a);N_GUARD,SBLOCK::P(B),XP(c)
- S(d);N_GUARD::S(E)
- Refutation
- Q(f);P_PINQ(H),P_SPINQ(f),XS(D)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(f);P_SPINQ(f),XB(G)::QAB1(H)
- P(j);XS(E)::R(I)+B(G),XQ(f)
- Q(f);SBLOCK::R(I)+B(G),DCHECK
- S(d);::QAB1(H)
- Refutation
- Q(f);P_PINQ(H),P_SPINQ(f),XS(D)
- Try
- B(G);XQ(f)
- Threat
- DUALS(7)
- Vars
- S(d);N_GUARD::QAR1(H),XS(d)
- S(a);::R(I)+S(E),XS(a)
- S(d);N_GUARD::QAR1(H)
- Refutation
- P(h);XB(G)
- Try
- R(C);XQ(f)
- Threat
- DUALS(2)
- Vars
- P(i);P_SPINP(i),XS(D)::QAB1(H)
- B(e);::QAB1(H)
- Refutation
- P(h);XR(C)
- Try
- Q(H);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::QAR1(H),XS(d)
- Refutation
- K(g);P-FLIGHT,XS(E)
- Try
- Actual
- S(E);
- Threat
- R(I)+B(G),XQ(f)
- Vars
- K(g);S_FLIGHT,XS(E)::B(G)
- Q(f);P_SPINQ(f),XB(G)::QAB1(H)
- Q(f);XR(C)::R(I)+B(G)
- Q(f);N_GUARD,P_PINQ(H),P_SPINQ(f),XS(D)::S(E),XP(i)
- S(a);N_GUARD,SBLOCK,XS(E)::P(B),XP(c)
- Q(f);SBLOCK::R(I)+B(G),DCHECK
- S(d);N_GUARD::S(E)
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).