MESON Chess Problem Database
Problem Display
PID: 242887 (5n2/4N3/R4n1N/3bk3/1R2p3/1BKp1Pq1/3Q4/B7 w - - 0 1)
Degener, Udo
4th Prize, Die Schwalbe, 1992
#2
9 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.f4#
- 1...Qf2
- 2.Qg5#
- 1...Qh2
- 2.Qg5#
- 2.Qxh2#
- 1...Qg1
- 2.f4#
- 1...Qg2
- 2.f4#
- 1...Qh3
- 2.f4#
- 1...Qg5
- 2.Qxg5#
- 1...Qg6
- 2.f4#
- 1...Qg7
- 2.f4#
- 1...Qg8
- 2.f4#
- 1...Bxb3
- 2.Kxb3#
- 1...Bc4
- 2.Kxc4#
- 1...Bc6
- 2.Sf7#
- 1...Bb7
- 2.Kc4#
- 2.Sf7#
- 1...Bf7
- 2.Sxf7#
- 1...Ba8
- 2.Kc4#
- 2.Sf7#
- 1...Sg4
- 2.Qg5#
- 1...Se6
- 2.Sf7#
- 1...exf3
- 2.Kxd3#
- 1...e3
- 2.Kxd3#
- 1...Qe1
- Tries
- 1.Kb2?
- threat
- 2.Kb1#
- 2.Kc1#
- 2.Ka2#
- 2.Ka3#
- 1...Bxb3
- 2.Kb1#
- 2.Kc1#
- 2.Ka3#
- 2.Kxb3#
- 1...Bc6
- 2.Sf7#
- 1...Qe1
- 2.Qg5#
- 2.f4#
- 1...Qg1
- 2.f4#
- 1...Se6
- 2.Sf7#
- 1...Qf2!
- threat
- 1.Sg4+?
- 1...Sxg4
- 2.Qg5#
- 1...Qxg4!
- 1...Sxg4
- 1.Sg6+?
- 1...Qxg6
- 2.f4#
- 1...Sxg6!
- 1...Qxg6
- 1.Bc4?
- threat
- 2.Kb3#
- 1...Bxc4
- 2.Kxc4#
- 1...exf3
- 2.Kxd3#
- 1...Bc6
- 2.Sf7#
- 1...Qf2
- 2.Qg5#
- 1...Qe1
- 2.f4#
- 1...Qg1
- 2.f4#
- 1...Se6
- 2.Sf7#
- 1...e3!
- threat
- 1.Bxd5?
- threat
- 2.Kb3#
- 2.Kc4#
- 2.Sf7#
- 1...Qf2
- 2.Sf7#
- 2.Qg5#
- 1...Qe1
- 2.Sf7#
- 2.f4#
- 1...Qg1
- 2.Sf7#
- 2.f4#
- 1...Qg6
- 2.Kb3#
- 2.Kc4#
- 2.f4#
- 1...Qg7
- 2.Kb3#
- 2.Kc4#
- 2.f4#
- 1...Qg8
- 2.Kb3#
- 2.Kc4#
- 2.f4#
- 1...Se6
- 2.Sf7#
- 2.Rxe6#
- 1...e3
- 2.Kb3#
- 2.Kxd3#
- 2.Sf7#
- 1...Sxd5+!
- threat
- 1.Rc4?
- threat
- 2.Kb4#
- 1...Qf2
- 2.Qg5#
- 1...Qe1
- 2.f4#
- 1...Qg1
- 2.f4#
- 1...Se6
- 2.Sf7#
- 1...Bc6!
- threat
- 1.Rxe4+?
- 1...Bxe4
- 2.Kb4#
- 2.Kc4#
- 2.Sf7#
- 1...Sxe4+!
- 1...Bxe4
- 1.Rb5?
- threat
- 2.Kb4#
- 2.Sf7#
- 1...exf3
- 2.Kxd3#
- 1...Qf2
- 2.Sf7#
- 2.Qg5#
- 1...Qe1
- 2.Sf7#
- 2.f4#
- 1...Qg1
- 2.Sf7#
- 2.f4#
- 1...Qg6
- 2.Kb4#
- 2.f4#
- 1...Qg7
- 2.Kb4#
- 2.f4#
- 1...Qg8
- 2.Kb4#
- 2.f4#
- 1...Se6
- 2.Sf7#
- 1...e3!
- threat
- 1.Rbb6?
- threat
- 2.Kb4#
- 1...exf3
- 2.Kxd3#
- 1...Bc6
- 2.Sf7#
- 1...Qf2
- 2.Qg5#
- 1...Qe1
- 2.f4#
- 1...Qg1
- 2.f4#
- 1...Se6
- 2.Sf7#
- 1...e3!
- threat
- 1.Rb7?
- threat
- 2.Kb4#
- 1...exf3
- 2.Kxd3#
- 1...Bc6
- 2.Sf7#
- 1...Qf2
- 2.Qg5#
- 1...Qe1
- 2.f4#
- 1...Qg1
- 2.f4#
- 1...Se6
- 2.Sf7#
- 1...e3!
- threat
- 1.Rb8?
- threat
- 2.Kb4#
- 1...exf3
- 2.Kxd3#
- 1...Bc6
- 2.Sf7#
- 1...Qf2
- 2.Qg5#
- 1...Qe1
- 2.f4#
- 1...Qg1
- 2.f4#
- 1...Se6
- 2.Sf7#
- 1...e3!
- threat
- 1.Qe3?
- threat
- 2.Kd2#
- 1...Bc6
- 2.Sf7#
- 1...Qf2
- 2.Qg5#
- 1...Qh2
- 2.Qg5#
- 1...Qg1
- 2.f4#
- 1...Qg2
- 2.f4#
- 1...Se6
- 2.Sf7#
- 1...d2
- 2.Kc2#
- 2.Kxd2#
- 1...Qe1+!
- threat
- 1.Kb2?
- Keys
- 1.Rba4!
- threat
- 2.Kb4#
- 1...exf3
- 2.Kxd3#
- 1...Bc6
- 2.Sf7#
- 1...Qf2
- 2.Qg5#
- 1...Qe1
- 2.f4#
- 1...Qg1
- 2.f4#
- 1...Se6
- 2.Sf7#
- 1...e3
- 2.Kxd3#
- threat
- 1.Rba4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 10
- Sets
- Q(b);N_GUARD,P_PINQ(B)::P(E)
- Q(b);N_GUARD::QAR2(B)
- Q(b);N_GUARD::P(E)
- Q(b);N_GUARD::QAR2(B),XQ(b)
- B(d);XB(C)::B(A)+K(D),XB(d)
- B(d);::B(A)+K(D),XB(d)
- B(d);N_GUARD::S(H)
- B(d);N_GUARD::S(H),XB(d)
- S(f);S_CUTQ(b)::QAR2(B)
- S(g);S_CUTB(d)::S(H)
- P(c);XP(E)::B(A)+K(D),XP(a)
- P(c);::B(A)+K(D),XP(a)
- Tries
- Try
- K(D);S_FLIGHT
- Threat
- DUALS(4)
- Vars
- B(d);N_GUARD::S(H)
- Q(b);N_GUARD::P(E)
- S(g);S_CUTB(d)::S(H)
- Refutation
- Q(b);P_PINQ(B)
- Try
- S(H);CHECK
- Vars
- S(f);XS(H)::QAR2(B)
- Refutation
- Q(b);XS(H)
- Try
- S(I);CHECK
- Vars
- Q(b);XS(I)::P(E)
- Refutation
- S(g);XS(I)
- Try
- B(C);
- Threat
- B(A)+K(D)
- Vars
- B(d);XB(C)::B(A)+K(D),XB(d)
- P(c);XP(E)::B(A)+K(D),XP(a)
- B(d);N_GUARD::S(H)
- Q(b);N_GUARD::QAR2(B)
- Q(b);N_GUARD,P_PINQ(B)::P(E)
- Q(b);N_GUARD::P(E)
- S(g);S_CUTB(d)::S(H)
- Refutation
- P(c);
- Try
- B(C);XB(d)
- Threat
- DUALS(3)
- Refutation
- S(f);CHECK,XB(C)
- Try
- R(F);
- Threat
- B(A)+K(D)
- Vars
- Q(b);N_GUARD::QAR2(B)
- Q(b);N_GUARD,P_PINQ(B)::P(E)
- Q(b);N_GUARD::P(E)
- S(g);S_CUTB(d)::S(H)
- Refutation
- B(d);
- Try
- R(F);CHECK,XP(c)
- Refutation
- S(f);CHECK,XR(F)
- Try
- R(F);P_PINB(d)
- Threat
- DUALS(2)
- Vars
- P(c);XP(E)::B(A)+K(D),XP(a)
- S(g);::S(H)
- Refutation
- P(c);
- Try
- R(F);
- Threat
- B(A)+K(D)
- Vars
- P(c);XP(E)::B(A)+K(D),XP(a)
- B(d);N_GUARD::S(H)
- Q(b);N_GUARD::QAR2(B)
- Q(b);N_GUARD,P_PINQ(B)::P(E)
- Q(b);N_GUARD::P(E)
- S(g);S_CUTB(d)::S(H)
- Refutation
- P(c);
- Try
- R(F);
- Threat
- B(A)+K(D)
- Vars
- P(c);XP(E)::B(A)+K(D),XP(a)
- B(d);N_GUARD::S(H)
- Q(b);N_GUARD::QAR2(B)
- Q(b);N_GUARD,P_PINQ(B)::P(E)
- Q(b);N_GUARD::P(E)
- S(g);S_CUTB(d)::S(H)
- Refutation
- P(c);
- Try
- R(F);
- Threat
- B(A)+K(D)
- Vars
- P(c);XP(E)::B(A)+K(D),XP(a)
- B(d);N_GUARD::S(H)
- Q(b);N_GUARD::QAR2(B)
- Q(b);N_GUARD,P_PINQ(B)::P(E)
- Q(b);N_GUARD::P(E)
- S(g);S_CUTB(d)::S(H)
- Refutation
- P(c);
- Try
- Q(B);P_PINP(c)
- Threat
- B(A)+K(D)
- Vars
- B(d);N_GUARD::S(H)
- Q(b);N_GUARD::QAR2(B)
- Q(b);N_GUARD::P(E)
- S(g);S_CUTB(d)::S(H)
- Refutation
- Q(b);CHECK
- Try
- Actual
- R(F);
- Threat
- B(A)+K(D)
- Vars
- P(c);XP(E)::B(A)+K(D),XP(a)
- B(d);N_GUARD::S(H)
- Q(b);N_GUARD::QAR2(B)
- Q(b);N_GUARD,P_PINQ(B)::P(E)
- Q(b);N_GUARD::P(E)
- S(g);S_CUTB(d)::S(H)
- P(c);::B(A)+K(D),XP(a)
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).