MESON Chess Problem Database
Problem Display
PID: 163171 (b5q1/1P1Rp3/2B1p3/4k2N/r2n2P1/1prQ3K/n4N1b/B7 w - - 0 1)
Kettner, Karl Werner
Welt im Bild, 1975
#2
9 + 11
| 15601 | Albrecht-Leiss-Degener Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qf7
- 2.b8Q#
- 2.b8B#
- 1...Qh7
- 2.b8Q#
- 2.b8B#
- 1...Qxg4+
- 2.Sxg4#
- 1...Qg5
- 2.b8Q#
- 2.b8B#
- 1...Qg6
- 2.b8Q#
- 2.b8B#
- 1...Qg7
- 2.b8Q#
- 2.b8B#
- 1...Rc1
- 2.Qe2#
- 2.Qe4#
- 2.Qe3#
- 1...Rc2
- 2.Qe4#
- 2.Qe3#
- 1...Rxd3+
- 2.Sxd3#
- 1...Rcc4
- 2.Qe2#
- 2.Qe4#
- 2.Qe3#
- 1...Rc5
- 2.Qe2#
- 2.Qe4#
- 2.Qe3#
- 1...Rxc6
- 2.Qe2#
- 2.Qe4#
- 2.Qe3#
- 1...Bg3
- 2.Qe4#
- 1...Sf3
- 2.Qb5#
- 1...Qf7
- Tries
- 1.Kxh2?
- threat
- 2.Qe4#
- 1...Qxg4
- 2.Sxg4#
- 2.b8Q#
- 2.b8B#
- 1...Rxd3
- 2.Sxd3#
- 1...Sxc6
- 2.Qb5#
- 1...Qh7
- 2.b8Q#
- 2.b8B#
- 1...Qg6
- 2.b8Q#
- 2.b8B#
- 1...Sc2
- 2.Qb5#
- 1...Se2
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...Sf5
- 2.Qb5#
- 1...Sf3+!
- threat
- 1.Bxc3?
- threat
- 2.Qe2#
- 2.Qe4#
- 2.Qb5#
- 2.Qe3#
- 1...Qxg4+
- 2.Sxg4#
- 1...Qh7
- 2.Qb5#
- 2.b8Q#
- 2.b8B#
- 1...Qg5
- 2.Qe4#
- 2.Qb5#
- 2.b8Q#
- 2.b8B#
- 1...Qg6
- 2.Qb5#
- 2.b8Q#
- 2.b8B#
- 1...Rb4
- 2.Qe2#
- 2.Qe4#
- 2.Qe3#
- 1...Rc4
- 2.Qe2#
- 2.Qe4#
- 2.Qe3#
- 1...Ra5
- 2.Bxd4#
- 2.Qe2#
- 2.Qe4#
- 2.Qe3#
- 2.Qxd4#
- 1...Bf4
- 2.Qe4#
- 2.Qb5#
- 1...Sc1
- 2.Qe4#
- 2.Qb5#
- 2.Qe3#
- 1...Sb4
- 2.Bxd4#
- 2.Qe2#
- 2.Qe4#
- 2.Qe3#
- 2.Qxd4#
- 1...Sxc3!
- threat
- 1.Qxc3?
- threat
- 2.Sd3#
- 2.Qe1#
- 2.Qe3#
- 2.Qc5#
- 1...Sxc3
- 2.Sd3#
- 1...Qh7
- 2.Qc5#
- 2.b8Q#
- 2.b8B#
- 1...Qg5
- 2.Sd3#
- 2.Qc5#
- 2.b8Q#
- 2.b8B#
- 1...Qg6
- 2.Qc5#
- 2.b8Q#
- 2.b8B#
- 1...Rc4
- 2.Sd3#
- 2.Qe1#
- 2.Qe3#
- 1...Ra5
- 2.Sd3#
- 2.Qe1#
- 2.Qxd4#
- 2.Qxa5#
- 2.Qe3#
- 1...Bf4
- 2.Sd3#
- 2.Qc5#
- 1...Sc1
- 2.Qe3#
- 2.Qc5#
- 1...Sb4
- 2.Qe1#
- 2.Qxd4#
- 2.Qe3#
- 1...b2
- 2.Sd3#
- 2.Qe3#
- 2.Qc5#
- 1...Qxg4+!
- threat
- 1.Kxh2?
- Keys
- 1.Kg2!
- threat
- 2.Qe4#
- 1...Qxg4+
- 2.Sxg4#
- 1...Rxd3
- 2.Sxd3#
- 1...Sxc6
- 2.Qb5#
- 1...Qh7
- 2.b8Q#
- 2.b8B#
- 1...Qg6
- 2.b8Q#
- 2.b8B#
- 1...Sc2
- 2.Qb5#
- 1...Se2
- 2.Qb5#
- 1...Sf3
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...Sf5
- 2.Qb5#
- threat
- 1.Kg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- Q(k);N_GUARD::P=Q
- Q(k);N_GUARD,P_PINS(F)::P=Q
- Q(k);CHECK,XP(E)::S(B),XQ(k)
- R(d);CHECK,P_SPINS(f),XQ(C)::S(B),XR(d)
- B(b);N_PINQ(C)::QAR1(C)
- S(f);N_PINQ(C),P_SPINR(d)::QAR(C)
- Tries
- Try
- K(D);N_SPINQ(C),P-FLIGHT,XB(b)
- Threat
- QAR1(C)
- Vars
- R(d);P_SPINS(f),XQ(C)::S(B),XR(d)
- S(f);N_GUARD,P_SPINR(d),XB(G)::QAR(C)
- Q(k);N_GUARD,P_PINS(F)::P=Q
- Q(k);N_GUARD::P=Q
- S(f);N_GUARD,P_SPINR(d)::QAR(C)
- S(f);N_GUARD,P_SPINR(d)::QAR(C),XS(f)
- Refutation
- S(f);CHECK,P_SPINR(d)
- Try
- B(A);N_SPINQ(C),P_PINS(f),XR(d)
- Threat
- DUALS(4)
- Vars
- Q(k);CHECK,XP(E)::S(B),XQ(k)
- Refutation
- S(a);N_SPINS(f),XB(A)
- Try
- Q(C);N_SPINQ(C),P_PINS(f),XR(d)
- Threat
- DUALS(4)
- Vars
- S(a);N_SPINS(f),XQ(C)::S(B)
- Refutation
- Q(k);CHECK,XP(E)
- Try
- Actual
- K(D);N_SPINQ(C),P_SPINP(E),S_FLIGHT
- Threat
- QAR1(C)
- Vars
- Q(k);CHECK,XP(E)::S(B),XQ(k)
- R(d);P_SPINS(f),XQ(C)::S(B),XR(d)
- S(f);N_GUARD,P_SPINR(d),XB(G)::QAR(C)
- Q(k);N_GUARD,N_PINP(E)::P=Q
- Q(k);N_GUARD::P=Q
- S(f);N_GUARD,P_SPINR(d)::QAR(C)
- S(f);N_GUARD,P_SPINR(d)::QAR(C),XS(f)
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).