MESON Chess Problem Database
Problem Display
PID: 214725 (8/2P1p3/1pQ1p1p1/1P4n1/N1Pk1n1R/3b2N1/8/3RB2K w - - 0 1)
Valle, Giovanni Batista
Detroit Free Press, 1877
#2
10 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ke5
- 2.Bc3#
- 1...Sf3
- 2.Qe4#
- 1...Sh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sf7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...e5
- 2.Bf2#
- 1...Ke5
- Tries
- 1.Rxd3+?
- 1...Ke5
- 2.Bc3#
- 1...Kxd3!
- 1...Ke5
- 1.Rxf4+?
- 1...Ke3
- 2.Bd2#
- 1...Se4
- 2.Rxe4#
- 2.Qxe4#
- 1...Ke5!
- 1...Ke3
- 1.Rg4?
- 1...Ke5
- 2.Bc3#
- 1...Sf3
- 2.Qe4#
- 1...Sh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sf7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...e5
- 2.Bf2#
- 1...Ke3!
- 1...Ke5
- 1.Qf3?
- 1...Kxc4
- 2.Qxd3#
- 1...Ke5
- 2.Qxf4#
- 1...Sh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sf7
- 2.Qe4#
- 2.Qxf4#
- 1...Sh7
- 2.Qe4#
- 2.Qxf4#
- 1...e5
- 2.Qxd3#
- 1...Sxf3!
- 1...Kxc4
- 1.Qd7+?
- 1...Kxc4
- 2.Qxd3#
- 1...Ke5
- 2.Bc3#
- 1...Ke3!
- 1...Kxc4
- 1.Qxb6+?
- 1...Ke5
- 2.Bc3#
- 1...Kxc4!
- 1...Ke5
- 1.Qd6+?
- 1...Ke3
- 2.Qxf4#
- 1...Kxc4
- 2.Qxd3#
- 1...exd6!
- 1...Ke3
- 1.Qxe6?
- threat
- 2.Se2#
- 2.Bf2#
- 2.Bc3#
- 1...Se4
- 2.Qxe4#
- 1...Sh3
- 2.Se2#
- 2.Bc3#
- 2.Qe4#
- 1...Sxe6!
- threat
- 1.c8Q?
- 1...Ke5
- 2.Bc3#
- 2.Qh8#
- 1...Sf3
- 2.Qe4#
- 1...Sh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sf7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...e5
- 2.Bf2#
- 2.Qxb6#
- 1...Ke3!
- 1...Ke5
- 1.c8S?
- 1...Ke5
- 2.Bc3#
- 1...Sf3
- 2.Qe4#
- 1...Sh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sf7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...e5
- 2.Bf2#
- 1...Ke3!
- 1...Ke5
- 1.c8B?
- 1...Ke5
- 2.Bc3#
- 1...Sf3
- 2.Qe4#
- 1...Sh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sf7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...e5
- 2.Bf2#
- 1...Ke3!
- 1...Ke5
- 1.c8R?
- 1...Ke5
- 2.Bc3#
- 1...Sf3
- 2.Qe4#
- 1...Sh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sf7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...e5
- 2.Bf2#
- 2.Qxb6#
- 1...Ke3!
- 1...Ke5
- 1.Rxd3+?
- Keys
- 1.Ba5!
- 1...Ke3
- 2.Bxb6#
- 1...Ke5
- 2.Bc3#
- 1...bxa5
- 2.Qc5#
- 1...Sf3
- 2.Qe4#
- 1...Sh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sf7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...e5
- 2.Bxb6#
- 1...Ke3
- 1.Ba5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT::B(B)
- S(d);N_GUARD::QAR1(I)
- S(d);N_GUARD,N_SPINS(c)::QAR1(I),XS(d)
- P(f);SBLOCK::B(B)
- Tries
- Try
- R(A);CHECK,XB(a)
- Vars
- K(b);N_SPINS(c),S_FLIGHT::B(B)
- Refutation
- K(b);N_SPINS(c),P-FLIGHT,XR(A)
- Try
- R(G);CHECK,XS(c)
- Vars
- K(b);N_SPINB(a),S_FLIGHT::B(B)
- Refutation
- K(b);N_SPINB(a),S_FLIGHT
- Try
- R(G);
- Vars
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT::B(B)
- S(d);N_GUARD::QAR1(I)
- S(d);N_GUARD,N_SPINS(c)::QAR1(I),XS(d)
- P(f);SBLOCK::B(B)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT
- Try
- Q(I);
- Vars
- K(b);N_SPINB(a),P-FLIGHT,XP(F)::QAB1(I),XB(a)
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT::QAB1(I),XS(c)
- S(d);N_GUARD::QAR1(I)
- S(d);N_GUARD,N_SPINS(c)::QAR1(I),XS(d)
- P(f);SBLOCK::QAR1(I),XB(a)
- Refutation
- S(d);XQ(I)
- Try
- Q(I);CHECK
- Vars
- K(b);N_SPINB(a),OGATE,P-FLIGHT,XP(F)::QAB1(I),XB(a)
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT::B(B)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT
- Try
- Q(I);CHECK,XP(e)
- Vars
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT::B(B)
- Refutation
- K(b);N_SPINB(a),P-FLIGHT,XP(F)
- Try
- Q(I);CHECK
- Vars
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT::QAB1(I),XS(c)
- K(b);N_SPINB(a),OGATE,P-FLIGHT,XP(F)::QAB1(I),XB(a)
- Refutation
- P(h);XQ(I)
- Try
- Q(I);XP(f)
- Threat
- DUALS(3)
- Vars
- S(d);N_GUARD,N_SPINS(c)::QAR1(I),XS(d)
- Refutation
- S(d);XQ(I)
- Try
- P(J);
- Vars
- S(d);N_GUARD::QAR1(I)
- S(d);N_GUARD,N_SPINS(c)::QAR1(I),XS(d)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT
- Try
- P(J);
- Vars
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT::B(B)
- S(d);N_GUARD::QAR1(I)
- S(d);N_GUARD,N_SPINS(c)::QAR1(I),XS(d)
- P(f);SBLOCK::B(B)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT
- Try
- P(J);
- Vars
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT::B(B)
- S(d);N_GUARD::QAR1(I)
- S(d);N_GUARD,N_SPINS(c)::QAR1(I),XS(d)
- P(f);SBLOCK::B(B)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT
- Try
- P(J);
- Vars
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT::B(B)
- S(d);N_GUARD::QAR1(I)
- S(d);N_GUARD,N_SPINS(c)::QAR1(I),XS(d)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT
- Try
- Actual
- B(B);
- Vars
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT::B(B),XP(e)
- K(b);N_SPINB(a),N_SPINS(c),S_FLIGHT::B(B)
- P(e);N_GUARD,XB(B)::QAB1(I)
- S(d);N_GUARD::QAR1(I)
- S(d);N_GUARD,N_SPINS(c)::QAR1(I),XS(d)
- P(f);SBLOCK::B(B),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).