MESON Chess Problem Database
Problem Display
PID: 81927 (2q1rb2/r4p1B/1N1R1N2/3p4/R1pk1Pp1/Q2P1bK1/3B4/n7 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Die Schwalbe, 1998
#2
10 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf5
- 2.Rxc4#
- 1...Qe6
- 2.Rxc4#
- 1...Qb7
- 2.Rxc4#
- 1...Qd7
- 2.Rxc4#
- 1...Qc5
- 2.Qb2#
- 2.Qxa1#
- 2.Qc3#
- 1...Qa8
- 2.Rxc4#
- 1...Qb8
- 2.Rxc4#
- 1...Qd8
- 2.Rxc4#
- 1...Re3
- 2.Bc3#
- 1...Re4
- 2.Rxd5#
- 1...Bd1
- 2.Rxd5#
- 1...Be2
- 2.Rxd5#
- 1...Qf5
- Tries
- 1.Sxc4?
- threat
- 2.Bc3#
- 1...Qxc4
- 2.Rxc4#
- 1...Qf5
- 2.Sa5#
- 1...Re4
- 2.Rxd5#
- 1...Be4
- 2.Be3#
- 1...Sb3!
- threat
- 1.Sbd7?
- threat
- 2.Qb2#
- 2.Qxa1#
- 2.Qc3#
- 1...Qxd7
- 2.Rxc4#
- 1...Rxa4
- 2.Qc3#
- 1...Qb7
- 2.Rxc4#
- 2.Qc5#
- 2.Qc3#
- 1...Qb8
- 2.Rxc4#
- 2.Qc5#
- 2.Qc3#
- 1...Rb7
- 2.Qc3#
- 1...Re1
- 2.Qb2#
- 2.Qc3#
- 1...Re4
- 2.Rxd5#
- 2.Qc3#
- 1...Be4
- 2.Qc3#
- 1...Sc2
- 2.Qb2#
- 2.Qc3#
- 1...Sb3
- 2.Qb2#
- 1...Rxd7!
- threat
- 1.Se4?
- threat
- 2.Rxd5#
- 2.Qc3#
- 1...Rxe4
- 2.Rxd5#
- 1...Bxd6
- 2.Qc3#
- 1...Sb3
- 2.Rxd5#
- 1...Qf5
- 2.Rxc4#
- 2.Qc3#
- 1...Qe6
- 2.Rxc4#
- 2.Qc3#
- 1...Qb7
- 2.Rxc4#
- 2.Qc3#
- 1...Qd7
- 2.Rxc4#
- 2.Qc3#
- 1...Qc5
- 2.Qc3#
- 1...Qc6
- 2.Qc3#
- 1...Qa8
- 2.Rxc4#
- 2.Qc3#
- 1...Qd8
- 2.Rxc4#
- 2.Qc3#
- 1...Ra5
- 2.Qc3#
- 1...Rd7
- 2.Qc3#
- 1...Re5
- 2.Qc3#
- 1...Rd8
- 2.Qc3#
- 1...Bxe4!
- threat
- 1.Sfxd5?
- threat
- 2.Bc3#
- 1...Bxd5
- 2.Rxd5#
- 1...Qf5
- 2.Rxc4#
- 1...Re4
- 2.Se7#
- 1...Be4
- 2.Be3#
- 1...f5!
- threat
- 1.Sfd7?
- threat
- 2.Qb2#
- 2.Qxa1#
- 2.Qc3#
- 1...Qxd7
- 2.Rxc4#
- 1...Rxa4
- 2.Qc3#
- 1...Sb3
- 2.Qb2#
- 1...Re1
- 2.Qb2#
- 2.Qc3#
- 1...Re4
- 2.Rxd5#
- 2.Qc3#
- 1...Be4
- 2.Qc3#
- 1...Sc2
- 2.Qb2#
- 2.Qc3#
- 1...f5
- 2.Qc3#
- 1...Rxd7!
- threat
- 1.Sxc4?
- Keys
- 1.Sbxd5!
- threat
- 2.Bc3#
- 1...Bxd5
- 2.Rxd5#
- 1...Qf5
- 2.Rxc4#
- 1...Re4
- 2.Se7#
- 1...Be4
- 2.Be3#
- threat
- 1.Sbxd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(i);N_GUARD::R1(E),XP(c)
- R(j);SBLOCK::B(A)
- R(j);S_CUTB(b)::R1(H),XP(f)
- B(b);N_GUARD::R1(H),XP(f)
- Tries
- Try
- S(G);P_PINP(f),XP(c)
- Threat
- B(A)
- Vars
- Q(i);OGATE,P_SPINQ(i),XS(G)::R1(E),XQ(i)
- Q(i);N_GUARD::R(E)+S(G)
- R(j);S_CUTB(b)::R1(H),XP(f)
- B(b);S_CUTR(j)::B(A)
- Refutation
- S(a);
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- Q(i);N_GUARD,XS(G)::R1(E),XP(c)
- R(g);N_SPINP(c),P_SPINP(f),XR(E)::QAB1(B)
- R(g);::QAB1(B)
- B(b);::QAB1(B)
- S(a);::QAB(B)
- Refutation
- R(g);XS(G)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- R(j);XS(I)::R1(H),XP(f)
- B(k);P_PINP(F),XR(H)::QAB1(B)
- S(a);::R1(H),XP(f)
- Q(i);::QAB1(B)
- R(g);::QAB1(B)
- R(j);::QAB1(B)
- Refutation
- B(b);XS(I)
- Try
- S(I);XP(f)
- Threat
- B(A)
- Vars
- B(b);OGATE,P_SPINB(b),XS(I)::R1(H),XB(b)
- Q(i);N_GUARD::R1(E),XP(c)
- R(j);S_CUTB(b)::R(H)+S(I)
- B(b);S_CUTR(j)::B(A)
- Refutation
- P(h);
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- Q(i);N_GUARD,XS(I)::R1(E),XP(c)
- R(g);N_SPINP(c),P_SPINP(f),XR(E)::QAB1(B)
- S(a);::QAB(B)
- B(b);::QAB1(B)
- P(h);::QAB1(B)
- Refutation
- R(g);XS(I)
- Try
- Actual
- S(G);XP(f)
- Threat
- B(A)
- Vars
- B(b);OGATE,P_SPINB(b),XS(G)::R1(H),XB(b)
- Q(i);N_GUARD::R1(E),XP(c)
- R(j);S_CUTB(b)::R(H)+S(G)
- B(b);S_CUTR(j)::B(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).