MESON Chess Problem Database
Problem Display
PID: 200044 (8/bNQp4/4q3/2P1p3/RN1Pk1Bn/Kp5n/2P2PPB/3R4 w - - 0 1)
Valtonen, Kari
Suomen Shakki, 1990
#2
13 + 8
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.Sd6#
- 2.Qxe5#
- 1...Qxg4
- 2.Sd6#
- 2.Qxe5#
- 1...Qf5
- 2.Sd6#
- 1...Qf7
- 2.Sd6#
- 2.Qxe5#
- 1...Qg8
- 2.Sd6#
- 2.Qxe5#
- 1...Qa6
- 2.Qxe5#
- 1...Qb6
- 2.Qxe5#
- 1...Qc6
- 2.Qxe5#
- 1...Qd6
- 2.Sxd6#
- 1...Qg6
- 2.Qxe5#
- 1...Qh6
- 2.Qxe5#
- 1...Qe8
- 2.Sd6#
- 1...Bxc5
- 2.Sxc5#
- 1...Sf3
- 2.gxf3#
- 1...Sf5
- 2.Bf3#
- 1...exd4
- 2.Re1#
- 1...Qc4
- Tries
- 1.Bxe6?
- threat
- 2.Sd6#
- 2.Qxe5#
- 1...Bxc5
- 2.Sxc5#
- 2.Qxe5#
- 1...Sxf2
- 2.Qxe5#
- 1...exd4
- 2.Sd6#
- 2.Re1#
- 2.Qe5#
- 1...Bb8
- 2.Sd6#
- 1...Sf3
- 2.Sd6#
- 1...Sf5
- 2.Bd5#
- 2.Qxe5#
- 1...Sg6
- 2.Sd6#
- 1...d6
- 2.Sxd6#
- 1...Sxg2!
- threat
- 1.dxe5?
- threat
- 2.Sd5#
- 1...Qxg4
- 2.Sd6#
- 1...Qxe5
- 2.Qxe5#
- 1...Bxc5
- 2.Sxc5#
- 1...Qc4
- 2.Sd6#
- 1...Qd5
- 2.Sxd5#
- 1...Qa6
- 2.Sxa6#
- 1...Qc6
- 2.Sxc6#
- 1...Sf3
- 2.gxf3#
- 1...Sf5
- 2.Bf3#
- 1...d5
- 2.Sxd5#
- 1...Qb6!
- threat
- 1.d5?
- threat
- 2.Sa2#
- 2.Sa6#
- 2.Sc6#
- 1...Qxg4
- 2.Sd6#
- 2.Qxe5#
- 1...Qxd5
- 2.Sxd5#
- 1...Bxc5
- 2.Sxc5#
- 1...Qa6
- 2.Sxa6#
- 2.Qxe5#
- 1...Qb6
- 2.Qxe5#
- 1...Qc6
- 2.Sxc6#
- 2.Qxe5#
- 1...Sf3
- 2.gxf3#
- 1...Sf5
- 2.Bf3#
- 1...Sxf2!
- threat
- 1.Bxe6?
- Keys
- 1.Sd5!
- threat
- 2.Sc3#
- 2.dxe5#
- 1...Bxc5+
- 2.dxc5#
- 1...Kxd5
- 2.dxe5#
- 1...Qxg4
- 2.Qxe5#
- 1...Qxd5
- 2.Re1#
- 1...Sxf2
- 2.dxe5#
- 1...exd4
- 2.Sc3#
- 2.Rdxd4#
- 2.Raxd4#
- 1...Qa6
- 2.Sc3#
- 2.Qxe5#
- 1...Qb6
- 2.Sc3#
- 2.Qxe5#
- 1...Qc6
- 2.Sc3#
- 2.Qxe5#
- 1...Sf3
- 2.Sc3#
- 1...Sf5
- 2.Sc3#
- 2.Bf3#
- threat
- 1.Sd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 10
- Sets
- Q(f);N_GUARD::S(L)
- Q(f);N_GUARD,P_PINR(G)::QAR1(M),XP(e)
- Q(f);N_GUARD::QAR1(M),XP(e)
- Q(f);N_GUARD::S(L),XQ(f)
- B(g);P_PINS(H),XP(K)::S(L),XB(g)
- S(d);OGATE::P(D),XS(d)
- S(d);N_GUARD,SBLOCK::B(J)
- P(e);SBLOCK,XP(I)::R(A)
- Tries
- Try
- B(J);XQ(f)
- Threat
- DUALS(2)
- Vars
- S(b);XP(C)::QAR1(M),XP(e)
- B(g);::S(L)
- S(d);::S(L)
- P(h);::S(L),XP(h)
- Refutation
- S(d);XP(D)
- Try
- P(I);XP(e)
- Threat
- R(G)+S(H)
- Vars
- Q(f);N_GUARD,XB(J)::S(L)
- Q(f);OGATE,XP(I)::QAR1(M),XQ(f)
- B(g);P_PINS(H),XP(K)::S(L),XB(g)
- Q(f);N_GUARD::S(L)
- Q(f);::R(G)+S(H),XQ(f)
- Q(f);N_GUARD,P_PINR(G)::R(G)+S(H),XQ(f)
- Q(f);N_GUARD::R(G)+S(H),XQ(f)
- S(d);OGATE::P(D),XS(d)
- S(d);N_GUARD,SBLOCK::B(J)
- P(h);::R(G)+S(H),XP(h)
- Refutation
- Q(f);
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- Q(f);XP(I)::R(G)+S(H),XQ(f)
- B(g);P_PINS(H),XP(K)::S(L),XB(g)
- Q(f);N_GUARD::QAR1(M),XP(e)
- S(d);OGATE::P(D),XS(d)
- S(d);N_GUARD,SBLOCK::B(J)
- Refutation
- S(b);XP(C)
- Try
- Actual
- S(H);
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,OGATE,XP(K)::R(G)+P(I),XB(g)
- K(c);S_FLIGHT,XS(H)::R(A)+P(I),XP(e)
- Q(f);N_GUARD,XB(J)::QAR1(M),XP(e)
- Q(f);SBLOCK,XS(H)::R(A)
- S(b);XP(C)::R(G)+P(I),XP(e)
- S(d);::S(H)
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).