MESON Chess Problem Database
Problem Display
PID: 163911 (3bN3/3p2qR/2p1p3/2Pk2p1/1P6/1n1PQ3/1BN2R2/3K1n1b w - - 0 1)
Vacca, Luciano
Best Problems, 2014
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxb2
- 2.Rxd7#
- 1...Qc3
- 2.Rxd7#
- 1...Qd4
- 2.Rxd7#
- 1...Qe5
- 2.Qxe5#
- 1...Qf6
- 2.Rxd7#
- 1...Qh6
- 2.Rxd7#
- 2.Qe5#
- 1...Qf8
- 2.Qe5#
- 1...Qh8
- 2.Rxd7#
- 1...Qg6
- 2.Rxd7#
- 2.Qe5#
- 1...Qe7
- 2.Qe5#
- 1...Qf7
- 2.Qe5#
- 1...Qxh7
- 2.Qe5#
- 1...Qg8
- 2.Rxd7#
- 2.Qe5#
- 1...Bf3+
- 2.Qxf3#
- 1...Be4
- 2.Qxe4#
- 1...Bf6
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 1...Sxe3+
- 2.Sxe3#
- 1...Sxc5
- 2.Qxc5#
- 1...Qxb2
- Tries
- 1.Sf6+?
- 1...Qxf6
- 2.Rxd7#
- 1...Bxf6!
- 1...Qxf6
- 1.Bf6?
- threat
- 2.Qe5#
- 1...Bf3+
- 2.Qxf3#
- 1...Sxe3+
- 2.Sxe3#
- 1...Qxf6
- 2.Rxd7#
- 1...Bxf6
- 2.Sc7#
- 1...e5
- 2.Qxe5#
- 1...Be4
- 2.Qxe4#
- 1...Bc7
- 2.Sxc7#
- 1...d6!
- threat
- 1.Bxg7?
- threat
- 2.Qe5#
- 1...Bf3+
- 2.Qxf3#
- 1...Sxe3+
- 2.Sxe3#
- 1...e5
- 2.Qxe5#
- 1...Be4
- 2.Qxe4#
- 1...Bf6
- 2.Sxf6#
- 2.Sc7#
- 1...Bc7
- 2.Sf6#
- 2.Sxc7#
- 1...d6!
- threat
- 1.Rxg7?
- threat
- 2.Rxd7#
- 2.Qe5#
- 1...Bf3+
- 2.Qxf3#
- 1...Sxe3+
- 2.Sxe3#
- 1...Sxc5
- 2.Qd4#
- 2.Qxc5#
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 1...Be4
- 2.Rxd7#
- 2.Qxe4#
- 1...Bf6
- 2.Sxf6#
- 2.Sc7#
- 2.Rxd7#
- 1...Bc7
- 2.Sf6#
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 2.Qe5#
- 1...Sd4
- 2.Rxd7#
- 2.Qxd4#
- 1...d6!
- threat
- 1.Qf4?
- threat
- 2.Qd6#
- 2.Qc4#
- 1...Bf3+
- 2.Qxf3#
- 1...Se3+
- 2.Sxe3#
- 1...Qxb2
- 2.Rxd7#
- 2.Qd6#
- 1...e5
- 2.Qc4#
- 1...d6
- 2.Qxd6#
- 2.Qc4#
- 1...Qc3
- 2.Rxd7#
- 2.Qd6#
- 1...Qd4
- 2.Rxd7#
- 2.Qd6#
- 1...Qe5
- 2.Qxe5#
- 2.Qc4#
- 1...Qf8
- 2.Qe5#
- 2.Qc4#
- 1...Qe7
- 2.Qe5#
- 2.Qc4#
- 1...Be4
- 2.Qd6#
- 2.Qxe4#
- 1...Bc7
- 2.Sxc7#
- 2.Qc4#
- 1...Be7
- 2.Sc7#
- 2.Qc4#
- 1...Sfd2
- 2.Se3#
- 2.Qd6#
- 1...Sbd2
- 2.Qd6#
- 1...Sd4
- 2.Qd6#
- 1...Sa5
- 2.Qd6#
- 1...gxf4!
- threat
- 1.Qxg5+?
- 1...Qe5
- 2.Rxd7#
- 2.Qxe5#
- 1...Qxg5
- 2.Rxd7#
- 1...Bxg5
- 2.Sc7#
- 1...e5!
- 1...Qe5
- 1.Qg3?
- threat
- 2.Qd6#
- 1...Bf3+
- 2.Qxf3#
- 1...Se3+
- 2.Sxe3#
- 1...Sxg3
- 2.Se3#
- 1...d6
- 2.Qxd6#
- 1...Qe5
- 2.Qxe5#
- 1...Qf8
- 2.Qe5#
- 1...Qe7
- 2.Qe5#
- 1...Bc7
- 2.Sxc7#
- 1...Be7
- 2.Sc7#
- 1...e5!
- threat
- 1.Sf6+?
- Keys
- 1.Rf6!
- threat
- 2.Qe5#
- 1...Bf3+
- 2.Qxf3#
- 1...Sxe3+
- 2.Sxe3#
- 1...Qxf6
- 2.Rxd7#
- 1...Bxf6
- 2.Sc7#
- 1...d6
- 2.Qxe6#
- 1...Be4
- 2.Qxe4#
- 1...Bc7
- 2.Sxc7#
- 1...Sd4
- 2.Qxd4#
- 1...e5
- 2.Rd6#
- 2.Qxe5#
- threat
- 1.Rf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- Q(i);OGATE,XB(B)::R(I),XP(h)
- Q(i);OGATE::R(I),XP(h)
- Q(i);OGATE,P_PINP(E)::R(I),XP(h)
- Q(i);N_GUARD::QAR1(F),XQ(i)
- Q(i);N_GUARD::QAR1(F)
- Q(i);N_GUARD,XR(I)::QAR1(F)
- B(b);CHECK,N_GUARD::QAB(F),XB(b)
- B(b);N_GUARD::QAB1(F),XB(b)
- B(j);N_GUARD::S(J)
- B(j);N_GUARD::S(J),XB(j)
- S(a);CHECK,XQ(F)::S(C),XS(a)
- S(c);OGATE,XP(H)::QAR1(F),XS(c)
- Tries
- Try
- S(J);CHECK
- Vars
- Q(i);OGATE,XS(J)::R(I),XP(h)
- Refutation
- B(j);XS(J)
- Try
- B(B);
- Threat
- QAR1(F)
- Vars
- B(b);CHECK,N_GUARD::QAB(F),XB(b)
- S(a);CHECK,XQ(F)::S(C),XS(a)
- Q(i);OGATE,XB(B)::R(I),XP(h)
- B(j);N_GUARD,XB(B)::S(J)
- P(g);::QAR1(F),XP(g)
- B(b);N_GUARD::QAB1(F),XB(b)
- B(j);N_GUARD::S(J),XB(j)
- Refutation
- P(h);
- Try
- B(B);XQ(i)
- Threat
- QAR1(F)
- Vars
- B(b);CHECK,N_GUARD::QAB(F),XB(b)
- S(a);CHECK,XQ(F)::S(C),XS(a)
- P(g);::QAR1(F),XP(g)
- B(b);N_GUARD::QAB1(F),XB(b)
- Refutation
- P(h);
- Try
- R(I);XQ(i)
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,N_GUARD::QAB(F),XB(b)
- S(a);CHECK,XQ(F)::S(C),XS(a)
- P(g);::QAR1(F),XP(g)
- Refutation
- P(h);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,N_GUARD::QAB(F),XB(b)
- S(a);CHECK,N_GUARD::S(C),XS(a)
- P(g);::QAB1(F)
- S(c);::QAR1(F)
- Refutation
- P(e);XQ(F)
- Try
- Q(F);CHECK,XP(e)
- Vars
- Q(i);OGATE,XQ(F)::R(I),XP(h)
- B(j);XQ(F)::S(J)
- Refutation
- P(g);P_SPINP(g)
- Try
- Q(F);
- Threat
- QAR1(F)
- Vars
- B(b);CHECK,N_GUARD::QAB(F),XB(b)
- S(a);CHECK,N_GUARD::S(C),XS(a)
- S(a);N_GUARD,XQ(F)::S(C)
- P(h);::QAR1(F),XP(h)
- Q(i);N_GUARD::QAR1(F),XQ(i)
- Q(i);N_GUARD::QAR1(F)
- B(j);N_GUARD::S(J),XB(j)
- B(j);N_GUARD::S(J)
- Refutation
- P(g);
- Try
- Actual
- R(D);
- Threat
- QAR1(F)
- Vars
- B(b);CHECK,N_GUARD::QAB(F),XB(b)
- S(a);CHECK,XQ(F)::S(C),XS(a)
- Q(i);OGATE,XR(D)::R(I),XP(h)
- B(j);N_GUARD,XR(D)::S(J)
- P(h);N_GUARD::QAB1(F),XP(g)
- B(b);N_GUARD::QAB1(F),XB(b)
- B(j);N_GUARD::S(J),XB(j)
- S(c);N_GUARD::QAR1(F),XS(c)
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).