MESON Chess Problem Database
Problem Display
PID: 38298 (2b2rr1/KN6/7b/p2RBn1N/2PPk3/q6p/4PQ2/8 w - - 0 1)
Ahues, Herbert Siegfried Oskar
1st Prize, Schach, 1994
#2
9 + 9
| 3681 | FIDE Album (1992-1994) | 2001 |
| 56 | The Problemist | 2006 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Sc5#
- 2.Qf3#
- 1...Qb2
- 2.Sc5#
- 2.Qf3#
- 1...Qb4
- 2.Qf3#
- 1...Qc5+
- 2.Sxc5#
- 1...Qd6
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qa1
- 2.Sc5#
- 2.Qf3#
- 1...Qa2
- 2.Sc5#
- 2.Qf3#
- 1...Qb3
- 2.Sc5#
- 1...Qc3
- 2.Sc5#
- 1...Qd3
- 2.Sc5#
- 1...Qe3
- 2.Sc5#
- 1...Qf3
- 2.Sc5#
- 2.Qxf3#
- 1...Qg3
- 2.Sc5#
- 1...Qa4
- 2.Sc5#
- 2.Qf3#
- 1...Rf6
- 2.Sxf6#
- 1...Rd8
- 2.Sf6#
- 1...Re8
- 2.Sf6#
- 1...Rg5
- 2.Qf4#
- 1...Be3
- 2.Qf3#
- 1...Bf4
- 2.Qxf4#
- 1...Bg7
- 2.Qf4#
- 1...Qc1
- Tries
- 1.Sd6+?
- 1...Qxd6
- 2.Qf3#
- 1...Sxd6!
- 1...Qxd6
- 1.Bh2?
- threat
- 2.Re5#
- 1...Qc5+
- 2.Sxc5#
- 1...Qd6
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qe3
- 2.Sc5#
- 1...Qg3
- 2.Sc5#
- 1...Re8
- 2.Sf6#
- 1...Be3
- 2.Qf3#
- 1...Bf4
- 2.Qxf4#
- 1...Bg7
- 2.Qf4#
- 1...Se3!
- threat
- 1.Bg3?
- threat
- 2.Re5#
- 1...Qc5+
- 2.Sxc5#
- 1...Qxg3
- 2.Sc5#
- 1...Qd6
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qe3
- 2.Sc5#
- 1...Re8
- 2.Sf6#
- 1...Be3
- 2.Qf3#
- 1...Bf4
- 2.Qxf4#
- 1...Bg7
- 2.Qf4#
- 1...Se3!
- threat
- 1.Bf4?
- threat
- 2.Re5#
- 1...Qc5+
- 2.Sxc5#
- 1...Bxf4
- 2.Qxf4#
- 1...Se3
- 2.Qf3#
- 1...Qd6
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qe3
- 2.Sc5#
- 1...Re8
- 2.Sf6#
- 1...Bg7!
- threat
- 1.Bd6?
- threat
- 2.Re5#
- 1...Qc5+
- 2.Sxc5#
- 1...Qxd6
- 2.Qf3#
- 1...Qe3
- 2.Sc5#
- 1...Qg3
- 2.Sc5#
- 1...Re8
- 2.Sf6#
- 1...Be3
- 2.Qf3#
- 1...Bf4
- 2.Qxf4#
- 1...Bg7
- 2.Qf4#
- 1...Se3!
- threat
- 1.Bf6?
- threat
- 2.Re5#
- 1...Qc5+
- 2.Sxc5#
- 1...Se3
- 2.Qf3#
- 1...Qd6
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qe3
- 2.Sc5#
- 1...Qg3
- 2.Sc5#
- 1...Be3
- 2.Qf3#
- 1...Bf4
- 2.Qxf4#
- 1...Re8!
- threat
- 1.Bc7?
- threat
- 2.Re5#
- 1...Qc5+
- 2.Sxc5#
- 1...Qd6
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qe3
- 2.Sc5#
- 1...Qg3
- 2.Sc5#
- 1...Re8
- 2.Sf6#
- 1...Be3
- 2.Qf3#
- 1...Bf4
- 2.Qxf4#
- 1...Bg7
- 2.Qf4#
- 1...Se3!
- threat
- 1.Bb8?
- threat
- 2.Re5#
- 1...Qc5+
- 2.Sxc5#
- 1...Qd6
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qe3
- 2.Sc5#
- 1...Qg3
- 2.Sc5#
- 1...Re8
- 2.Sf6#
- 1...Be3
- 2.Qf3#
- 1...Bf4
- 2.Qxf4#
- 1...Bg7
- 2.Qf4#
- 1...Se3!
- threat
- 1.Bh8?
- threat
- 2.Re5#
- 1...Qc5+
- 2.Sxc5#
- 1...Qd6
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qe3
- 2.Sc5#
- 1...Qg3
- 2.Sc5#
- 1...Re8
- 2.Sf6#
- 1...Be3
- 2.Qf3#
- 1...Bf4
- 2.Qxf4#
- 1...Bg7
- 2.Qf4#
- 1...Se3!
- threat
- 1.Sd6+?
- Keys
- 1.Bg7!
- threat
- 2.Re5#
- 1...Qc5+
- 2.Sxc5#
- 1...Bxg7
- 2.Qf4#
- 1...Se3
- 2.Sg3#
- 1...Qd6
- 2.Qf3#
- 1...Qe7
- 2.Qf3#
- 1...Qe3
- 2.Sc5#
- 1...Qg3
- 2.Sc5#
- 1...Re8
- 2.Sf6#
- 1...Be3
- 2.Qf3#
- 1...Bf4
- 2.Qxf4#
- threat
- 1.Bg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD::QAB1(B)
- Q(a);CHECK,N_GUARD::S(I),XQ(a)
- Q(a);N_GUARD,P_PINS(I)::QAB1(B)
- Q(a);N_GUARD::S(I)
- Q(a);N_GUARD,P_PINP(D)::S(I)
- R(h);N_GUARD::S(G),XR(h)
- R(h);N_GUARD::S(G)
- R(i);S_CUTB(f)::QAR1(B)
- B(f);P_PINP(D),S_CUTQ(a)::QAB1(B)
- B(f);N_GUARD::QAR1(B),XB(f)
- B(f);N_GUARD::QAR1(B)
- Tries
- Try
- S(I);CHECK
- Vars
- Q(a);XS(I)::QAB1(B)
- Refutation
- S(e);XS(I)
- Try
- B(F);
- Threat
- R1(E)
- Vars
- Q(a);CHECK,N_GUARD::S(I),XQ(a)
- Q(a);N_GUARD::QAB1(B)
- Q(a);N_GUARD,P_PINS(I)::QAB1(B)
- Q(a);N_GUARD,P_PINP(D)::S(I)
- Q(a);N_GUARD::S(I)
- R(h);N_GUARD::S(G)
- B(f);P_PINP(D),S_CUTQ(a)::QAB1(B)
- B(f);N_GUARD::QAR1(B),XB(f)
- B(f);N_GUARD::QAR1(B)
- Refutation
- S(e);
- Try
- B(F);
- Threat
- R1(E)
- Vars
- Q(a);CHECK,N_GUARD::S(I),XQ(a)
- Q(a);N_GUARD,XB(F)::S(I)
- Q(a);N_GUARD::QAB1(B)
- Q(a);N_GUARD,P_PINS(I)::QAB1(B)
- Q(a);N_GUARD,P_PINP(D)::S(I)
- R(h);N_GUARD::S(G)
- B(f);P_PINP(D),S_CUTQ(a)::QAB1(B)
- B(f);N_GUARD::QAR1(B),XB(f)
- B(f);N_GUARD::QAR1(B)
- Refutation
- S(e);
- Try
- B(F);
- Threat
- R1(E)
- Vars
- Q(a);CHECK,N_GUARD::S(I),XQ(a)
- B(f);OGATE,XB(F)::QAR1(B),XB(f)
- S(e);S_CUTQ(a)::QAB1(B)
- Q(a);N_GUARD::QAB1(B)
- Q(a);N_GUARD,P_PINS(I)::QAB1(B)
- Q(a);N_GUARD,P_PINP(D)::S(I)
- R(h);N_GUARD::S(G)
- Refutation
- B(f);
- Try
- B(F);
- Threat
- R1(E)
- Vars
- Q(a);CHECK,N_GUARD::S(I),XQ(a)
- Q(a);N_GUARD,XB(F)::QAB1(B)
- Q(a);N_GUARD,P_PINP(D)::S(I)
- Q(a);N_GUARD::S(I)
- R(h);N_GUARD::S(G)
- B(f);P_PINP(D),S_CUTQ(a)::QAB1(B)
- B(f);N_GUARD::QAR1(B),XB(f)
- B(f);N_GUARD::QAR1(B)
- Refutation
- S(e);
- Try
- B(F);
- Threat
- R1(E)
- Vars
- Q(a);CHECK,N_GUARD::S(I),XQ(a)
- S(e);S_CUTQ(a)::QAB1(B)
- Q(a);N_GUARD::QAB1(B)
- Q(a);N_GUARD,P_PINS(I)::QAB1(B)
- Q(a);N_GUARD,P_PINP(D)::S(I)
- Q(a);N_GUARD::S(I)
- B(f);P_PINP(D),S_CUTQ(a)::QAB1(B)
- B(f);N_GUARD::QAR1(B),XB(f)
- Refutation
- R(h);
- Try
- B(F);
- Threat
- R1(E)
- Vars
- Q(a);CHECK,N_GUARD::S(I),XQ(a)
- Q(a);N_GUARD::QAB1(B)
- Q(a);N_GUARD,P_PINP(D)::S(I)
- Q(a);N_GUARD::S(I)
- R(h);N_GUARD::S(G)
- B(f);P_PINP(D),S_CUTQ(a)::QAB1(B)
- B(f);N_GUARD::QAR1(B),XB(f)
- B(f);N_GUARD::QAR1(B)
- Refutation
- S(e);
- Try
- B(F);
- Threat
- R1(E)
- Vars
- Q(a);CHECK,N_GUARD::S(I),XQ(a)
- Q(a);N_GUARD::QAB1(B)
- Q(a);N_GUARD,P_PINS(I)::QAB1(B)
- Q(a);N_GUARD,P_PINP(D)::S(I)
- Q(a);N_GUARD::S(I)
- R(h);N_GUARD::S(G)
- B(f);P_PINP(D),S_CUTQ(a)::QAB1(B)
- B(f);N_GUARD::QAR1(B),XB(f)
- B(f);N_GUARD::QAR1(B)
- Refutation
- S(e);
- Try
- B(F);
- Threat
- R1(E)
- Vars
- Q(a);CHECK,N_GUARD::S(I),XQ(a)
- Q(a);N_GUARD::QAB1(B)
- Q(a);N_GUARD,P_PINS(I)::QAB1(B)
- Q(a);N_GUARD,P_PINP(D)::S(I)
- Q(a);N_GUARD::S(I)
- R(h);N_GUARD::S(G)
- B(f);P_PINP(D),S_CUTQ(a)::QAB1(B)
- B(f);N_GUARD::QAR1(B),XB(f)
- B(f);N_GUARD::QAR1(B)
- Refutation
- S(e);
- Try
- Actual
- B(F);
- Threat
- R1(E)
- Vars
- Q(a);CHECK,N_GUARD::S(I),XQ(a)
- B(f);N_GUARD,XB(F)::QAR1(B)
- S(e);N_GUARD,S_CUTQ(a)::S(G)
- Q(a);N_GUARD::QAB1(B)
- Q(a);N_GUARD,P_PINS(I)::QAB1(B)
- Q(a);N_GUARD,P_PINP(D)::S(I)
- Q(a);N_GUARD::S(I)
- R(h);N_GUARD::S(G)
- B(f);P_PINP(D),S_CUTQ(a)::QAB1(B)
- B(f);N_GUARD::QAR1(B),XB(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).