MESON Chess Problem Database
Problem Display
PID: 281005 (3R4/5pK1/8/3pkP2/3p2PN/n3rbP1/1Q1NPP2/1q6 w - - 0 1)
Bielefeldt, German
Cabrera, Virginio
Tehtavaniekka, 2023
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Qb8#
- 1...Qd3
- 2.Qb8#
- 1...Qe4
- 2.Qb8#
- 1...Qa1
- 2.Qb8#
- 1...Qd1
- 2.Qb8#
- 1...Qe1
- 2.Qb8#
- 1...Qf1
- 2.Qb8#
- 1...Qg1
- 2.Qb8#
- 1...Qh1
- 2.Qb8#
- 1...Rxe2
- 2.Shxf3#
- 1...Re4
- 2.Sdxf3#
- 2.Shxf3#
- 1...Bh1
- 2.f4#
- 1...Bxe2
- 2.f4#
- 1...Bg2
- 2.f4#
- 1...Be4
- 2.f4#
- 1...Bxg4
- 2.f4#
- 1...f6
- 2.Sg6#
- 1...Qa2
- Tries
- 1.Kxf7?
- threat
- 2.Sg6#
- 1...Bxg4
- 2.f4#
- 1...Qxf5+!
- threat
- 1.Sdxf3+?
- 1...Ke4
- 2.Re8#
- 2.Qxd4#
- 1...Rxf3!
- 1...Ke4
- 1.Sc4+?
- 1...Ke4
- 2.Re8#
- 1...dxc4
- 2.Qxd4#
- 1...Sxc4!
- 1...Ke4
- 1.Qb4?
- threat
- 2.Re8#
- 2.Qd6#
- 2.Qe7#
- 1...Qxf5
- 2.Qd6#
- 1...Sc4
- 2.Re8#
- 2.Qe7#
- 1...Sb5
- 2.Re8#
- 2.Qe7#
- 1...d3
- 2.Re8#
- 2.Qf4#
- 1...Qxb4!
- threat
- 1.Qb6?
- threat
- 2.Re8#
- 2.Qc7#
- 2.Qd6#
- 2.Qf6#
- 1...Qxf5
- 2.Qd6#
- 1...Qc2
- 2.Re8#
- 2.Qd6#
- 2.Qf6#
- 1...Qc1
- 2.Re8#
- 2.Qd6#
- 2.Qf6#
- 1...Qb4
- 2.Qf6#
- 1...Qb5
- 2.Qc7#
- 2.Qd6#
- 2.Qf6#
- 1...Rc3
- 2.Re8#
- 2.Qd6#
- 2.Qf6#
- 1...Sc4
- 2.Re8#
- 2.Qf6#
- 1...Sb5
- 2.Re8#
- 2.Qf6#
- 1...d3
- 2.Re8#
- 2.Qf6#
- 1...f6
- 2.Sg6#
- 2.Re8#
- 2.Qc7#
- 2.Qd6#
- 2.Qe6#
- 2.Qxf6#
- 1...Qxb6!
- threat
- 1.fxe3?
- threat
- 2.Shxf3#
- 2.Qxd4#
- 2.exd4#
- 1...Qxb2
- 2.Shxf3#
- 1...Bxe2
- 2.Qxd4#
- 2.exd4#
- 1...Bxg4
- 2.Qxd4#
- 2.exd4#
- 1...Qd3
- 2.Shxf3#
- 2.Qb8#
- 1...Qe4
- 2.Qb8#
- 1...Qa1
- 2.Shxf3#
- 2.Qb8#
- 2.exd4#
- 1...Qf1
- 2.Qxd4#
- 2.Qb8#
- 2.exd4#
- 1...Qg1
- 2.Shxf3#
- 2.Qxd4#
- 2.Qb8#
- 1...Qh1
- 2.Qxd4#
- 2.Qb8#
- 2.exd4#
- 1...Bh1
- 2.Qxd4#
- 2.exd4#
- 1...Bg2
- 2.Qxd4#
- 2.exd4#
- 1...Be4
- 2.Qxd4#
- 2.exd4#
- 1...Sc2
- 2.Shxf3#
- 1...Sb5
- 2.Shxf3#
- 1...Qxf5!
- threat
- 1.Kxf7?
- Keys
- 1.Se4!
- threat
- 2.Re8#
- 1...Kxe4
- 2.Re8#
- 1...Qxe4
- 2.Qb8#
- 1...Rxe4
- 2.Sxf3#
- 1...Bxe4
- 2.f4#
- 1...dxe4
- 2.Qxd4#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 14
- Sets
- Q(a);N_GUARD::QAB(A)
- R(c);N_GUARD,XP(C)::S(G),XB(d)
- B(d);OGATE::P(D)
- B(d);OGATE,XP(C)::P(D)
- B(d);OGATE,XP(F)::P(D)
- P(h);N_GUARD::S(G)
- Tries
- Try
- K(I);P-FLIGHT,XP(h)
- Threat
- S(G)
- Vars
- B(d);OGATE,XP(F)::P(D)
- Refutation
- Q(a);CHECK,XP(H)
- Try
- S(B);CHECK,XB(d)
- Refutation
- R(c);XS(B)
- Try
- S(B);CHECK
- Vars
- K(g);N_SPINP(e),P-FLIGHT::R(J)
- P(f);XS(B)::QAB1(A),XP(e)
- Refutation
- S(b);XS(B)
- Try
- Q(A);N_PINP(e)
- Threat
- DUALS(3)
- Vars
- Q(a);XP(H)::QAB1(A)
- Refutation
- Q(a);XQ(A)
- Try
- Q(A);N_PINP(e)
- Threat
- DUALS(4)
- Vars
- Q(a);XP(H)::QAB1(A)
- Q(a);::QAB1(A)
- Refutation
- Q(a);XQ(A)
- Try
- P(D);XR(c)
- Threat
- DUALS(3)
- Vars
- Q(a);N_SPINP(e),XQ(A)::S(G),XB(d)
- Q(a);N_GUARD::QAB(A)
- S(b);::S(G),XB(d)
- Refutation
- Q(a);XP(H)
- Try
- Actual
- S(B);
- Threat
- R(J)
- Vars
- K(g);N_SPINP(e),P-FLIGHT,XS(B)::R(J)
- Q(a);N_GUARD,SBLOCK,XS(B)::QAB(A)
- R(c);N_GUARD,SBLOCK,XS(B)::S(G),XB(d)
- B(d);OGATE,SBLOCK,XS(B)::P(D)
- P(f);XS(B)::QAB1(A),XP(e)
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).