MESON Chess Problem Database
Problem Display
PID: 281816 (8/4NK1p/3p3b/3pkp2/R2n1n1R/5pB1/6B1/5Q1q w - - 0 1)
Bielefeldt, German
Zaragoza-65 JT (Problemas), 2025
#2
7 + 10
SOLUTION
- SOUND
- Sets
- 1...Ke4
- 2.Qe2#
- 1...Sc2
- 2.Sc6#
- 1...Se2
- 2.Sc6#
- 1...Sb3
- 2.Sc6#
- 1...Sb5
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Se6
- 2.Sc6#
- 1...Ke4
- Tries
- 1.Sc6+?
- 1...Ke4
- 2.Qe2#
- 2.Qxf3#
- 1...Sxc6!
- 1...Ke4
- 1.Sg6+?
- 1...Ke4
- 2.Qe2#
- 2.Qxf3#
- 1...hxg6!
- 1...Ke4
- 1.Bxf4+?
- 1...Ke4
- 2.Qe2#
- 2.Qxf3#
- 1...Bxf4!
- 1...Ke4
- 1.Qe2+?
- 1...Sxe2
- 2.Sc6#
- 1...fxe2!
- 1...Sxe2
- 1.Qd3?
- threat
- 2.Qe3#
- 2.Qxd4#
- 1...Qa1
- 2.Qe3#
- 1...Qb1
- 2.Qxd4#
- 1...Qc1
- 2.Qxd4#
- 1...Qd1
- 2.Qe3#
- 1...Qe1
- 2.Qxd4#
- 1...Sc2
- 2.Sc6#
- 2.Qxf5#
- 2.Qxd5#
- 1...Se2
- 2.Sc6#
- 2.Qxf5#
- 2.Qe3#
- 2.Qxd5#
- 1...Sb3
- 2.Sc6#
- 2.Qxf5#
- 2.Qe3#
- 2.Qxd5#
- 1...Sb5
- 2.Sc6#
- 2.Qxf5#
- 2.Qe3#
- 2.Qxd5#
- 1...Sc6
- 2.Sxc6#
- 2.Qxf5#
- 2.Qe3#
- 2.Qxd5#
- 1...Se6
- 2.Sc6#
- 2.Qxf5#
- 2.Qe3#
- 2.Qxd5#
- 1...Qg1!
- threat
- 1.Qc4?
- threat
- 2.Qxd5#
- 2.Qxd4#
- 1...Ke4
- 2.Qe2#
- 2.Qxd4#
- 1...Qa1
- 2.Qxd5#
- 1...Qd1
- 2.Qxd5#
- 1...Qg1
- 2.Qxd5#
- 1...Sc2
- 2.Sc6#
- 2.Qxd5#
- 1...Se2
- 2.Sc6#
- 2.Qxd5#
- 1...Sb3
- 2.Sc6#
- 2.Qxd5#
- 1...Sb5
- 2.Sc6#
- 2.Qxd5#
- 1...Sc6
- 2.Sxc6#
- 2.Qxd5#
- 1...Se6
- 2.Sc6#
- 2.Qxd5#
- 1...dxc4!
- threat
- 1.Qe1+?
- 1...Se2
- 2.Sc6#
- 1...Qxe1!
- 1...Se2
- 1.Qf2?
- threat
- 2.Qe3#
- 2.Qxd4#
- 1...Ke4
- 2.Qxd4#
- 2.Qe2#
- 1...Qa1
- 2.Qe3#
- 1...Qb1
- 2.Qxd4#
- 1...Qc1
- 2.Qxd4#
- 1...Qd1
- 2.Qe3#
- 1...Qe1
- 2.Qxd4#
- 1...Sc2
- 2.Sc6#
- 1...Se2
- 2.Sc6#
- 2.Qe3#
- 1...Sb3
- 2.Sc6#
- 2.Qe3#
- 1...Sb5
- 2.Sc6#
- 2.Qe3#
- 1...Sc6
- 2.Sxc6#
- 2.Qe3#
- 1...Se6
- 2.Sc6#
- 2.Qe3#
- 1...Qg1!
- threat
- 1.Qxf3?
- threat
- 2.Qxd5#
- 2.Qe3#
- 1...Sxf3
- 2.Sc6#
- 1...Qg1
- 2.Qxd5#
- 1...Qb1
- 2.Qxd5#
- 1...Qc1
- 2.Qxd5#
- 1...Qe1
- 2.Qxd5#
- 1...Sc2
- 2.Sc6#
- 2.Qxd5#
- 1...Qxg2!
- threat
- 1.Sc6+?
- Keys
- 1.Qb5!
- threat
- 2.Qxd5#
- 1...Ke4
- 2.Qe2#
- 1...Sxb5
- 2.Sc6#
- threat
- 1.Qb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- K(f);N_SPINS(d),P-FLIGHT,P_SPINP(b),P_SPINS(c)::QAR2(A)
- S(c);N_GUARD::S(F)
- S(c);N_GUARD::S(F),XS(c)
- Tries
- Try
- S(F);CHECK
- Refutation
- S(c);XS(F)
- Try
- S(F);CHECK
- Refutation
- P(j);XS(F)
- Try
- B(C);CHECK,XS(d)
- Refutation
- B(i);XB(C)
- Try
- Q(A);CHECK
- Vars
- S(c);XQ(A)::S(F)
- Refutation
- P(b);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(a);::QAR2(A)
- Q(a);::QAB1(A),XS(c)
- Refutation
- Q(a);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(a);::QAR1(A),XP(e)
- Refutation
- P(e);XQ(A)
- Try
- Q(A);CHECK
- Vars
- S(c);N_SPINS(d),P_SPINS(c)::S(F)
- Refutation
- Q(a);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(a);::QAR2(A)
- Q(a);::QAB1(A),XS(c)
- S(c);N_GUARD::S(F)
- Refutation
- Q(a);
- Try
- Q(A);XP(b)
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD,XQ(A)::S(F)
- Q(a);::QAR1(A),XP(e)
- Refutation
- Q(a);XB(B)
- Try
- Actual
- Q(A);P_PINP(e)
- Threat
- QAR1(A),XP(e)
- Vars
- K(f);N_SPINP(e),N_SPINS(d),P-FLIGHT,P_SPINP(b),P_SPINS(c)::QAR2(A)
- S(c);N_GUARD,N_SPINP(e),XQ(A)::S(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).