MESON Chess Problem Database
Problem Display
PID: 227550 (8/1B1qpn2/2N3R1/2p5/Kp2kP2/1P1R3Q/4N2n/2B5 w - - 0 1)
Mari, Alberto
3rd Prize=, El Ajedrez Argentino, 1926
#2
10 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qg4
- 2.Scd4#
- 2.Sxe7#
- 1...Qf5
- 2.Se5#
- 2.Qe3#
- 1...Qxc6+
- 2.Bxc6#
- 1...Qxd3
- 2.Scd4#
- 1...Qd4
- 2.Scxd4#
- 1...Qd5
- 2.Re3#
- 1...Qd8
- 2.Sxd8#
- 1...Qg4
- Tries
- 1.Rd4+?
- 1...Qxd4
- 2.Scxd4#
- 1...cxd4!
- 1...Qxd4
- 1.Rxd7?
- threat
- 2.Sxb4#
- 2.Scd4#
- 2.Sa5#
- 2.Se5#
- 2.Sa7#
- 2.Sxe7#
- 2.Sb8#
- 2.Sd8#
- 2.Qd3#
- 1...Sg4
- 2.Scd4#
- 2.Sxe7#
- 2.Qd3#
- 1...Sf3
- 2.Sg3#
- 2.Sxb4#
- 2.Sa5#
- 2.Se5#
- 2.Sa7#
- 2.Sxe7#
- 2.Sb8#
- 2.Sd8#
- 1...Se5
- 2.Sxe5#
- 1...Sd8
- 2.Sxd8#
- 2.Qd3#
- 1...c4
- 2.Sxb4#
- 2.Scd4#
- 2.Sa5#
- 2.Se5#
- 2.Sa7#
- 2.Sxe7#
- 2.Sb8#
- 2.Sd8#
- 2.Rd4#
- 1...e5
- 2.Sxb4#
- 2.Scd4#
- 2.Sa5#
- 2.Sxe5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Qd3#
- 1...e6
- 2.Sxb4#
- 2.Scd4#
- 2.Sa5#
- 2.Se5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Qd3#
- 1...Sd6!
- threat
- 1.Rg5?
- threat
- 2.Re3#
- 2.Qe3#
- 1...Qxc6+
- 2.Bxc6#
- 1...Qxh3
- 2.Sxb4#
- 2.Se5#
- 1...Qxd3
- 2.Scd4#
- 1...Sf3
- 2.Re3#
- 2.Qxf3#
- 1...Qf5
- 2.Se5#
- 2.Qxf5#
- 2.Qe3#
- 1...Qd4
- 2.Scxd4#
- 2.Qf5#
- 2.Qh7#
- 1...Sf1
- 2.Qf3#
- 1...Sg4
- 2.Qf3#
- 1...Se5
- 2.Rxe5#
- 2.Qe3#
- 1...e5
- 2.Qe3#
- 1...Sxg5!
- threat
- 1.Re6+?
- 1...Se5
- 2.Rxe5#
- 2.Qh7#
- 1...Qxe6!
- 1...Se5
- 1.Rf6?
- threat
- 2.Qe3#
- 1...Qxc6+
- 2.Bxc6#
- 1...Qxh3
- 2.Sxb4#
- 2.Se5#
- 1...Qxd3
- 2.Scd4#
- 1...Qd4
- 2.Scxd4#
- 2.Qf5#
- 1...Sf3
- 2.Qxf3#
- 1...Sf1
- 2.Qf3#
- 1...Sg4
- 2.Qf3#
- 1...exf6!
- threat
- 1.Qf5+?
- 1...Qxf5
- 2.Se5#
- 1...Kxf5!
- 1...Qxf5
- 1.Qe6+?
- 1...Kxd3
- 2.Qc4#
- 1...Se5
- 2.Re3#
- 1...Qxe6!
- 1...Kxd3
- 1.Qxd7?
- threat
- 2.Sg3#
- 2.Sxb4#
- 2.Sa5#
- 2.Se5#
- 2.Sa7#
- 2.Sxe7#
- 2.Sb8#
- 2.Sd8#
- 2.Re3#
- 2.Qd5#
- 1...e6
- 2.Sg3#
- 2.Se7#
- 1...Sf1
- 2.Sxb4#
- 2.Sa5#
- 2.Se5#
- 2.Sa7#
- 2.Sxe7#
- 2.Sb8#
- 2.Sd8#
- 2.Qd5#
- 1...Sg4
- 2.Sg3#
- 2.Sxb4#
- 2.Sa5#
- 2.Se5#
- 2.Sa7#
- 2.Sxe7#
- 2.Sb8#
- 2.Sd8#
- 2.Qd5#
- 1...Se5
- 2.Sg3#
- 2.Sxe5#
- 2.Re3#
- 1...Sd8
- 2.Sg3#
- 2.Sxd8#
- 2.Re3#
- 2.Qd5#
- 1...e5
- 2.Sg3#
- 2.Sxb4#
- 2.Sa5#
- 2.Sxe5#
- 2.Sa7#
- 2.Se7#
- 2.Sb8#
- 2.Sd8#
- 2.Re3#
- 1...Sd6!
- threat
- 1.Rd4+?
- Keys
- 1.Qh7!
- threat
- 2.Re6#
- 1...Qxc6+
- 2.Rxc6#
- 1...Kxd3
- 2.Re6#
- 1...Kf5
- 2.Sg3#
- 1...Qxd3
- 2.Scd4#
- 1...Qd4
- 2.Rg5#
- 2.Rd6#
- 1...Qf5
- 2.Se5#
- 1...Qe6
- 2.Rxe6#
- 1...e6
- 2.Rg1#
- 2.Rg2#
- 2.Rgg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rxe6#
- 2.Rf6#
- 2.Rh6#
- 2.Rg7#
- 2.Rg8#
- threat
- 1.Qh7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- Q(e);CHECK,OGATE,P_SPINQ(e),XS(H)::B(J),XQ(e)
- Q(e);N_PINS(H),XR(D)::B(J)+S(H)
- Q(e);N_PINS(H)::B(J)+S(H),XQ(e)
- Q(e);N_PINS(H),SBLOCK::R1(D)
- Tries
- Try
- R(D);CHECK
- Vars
- Q(e);N_PINS(H),XR(D)::B(J)+S(H),XQ(e)
- Refutation
- P(d);XR(D)
- Try
- R(D);N_SPINS(H),XQ(e)
- Threat
- DUALS(9)
- Vars
- S(g);::B(J)+S(H),XS(g)
- Refutation
- S(g);
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XS(H)::B(J),XQ(e)
- Q(e);N_PINS(H),XR(D)::B(J)+S(H)
- S(a);N_GUARD::QAB1(E)
- P(f);::QAR1(E)
- Refutation
- S(g);XR(I)
- Try
- R(I);CHECK
- Refutation
- Q(e);N_PINS(H),XR(I)
- Try
- R(I);
- Threat
- QAR1(E)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XS(H)::B(J),XQ(e)
- Q(e);N_PINS(H),XR(D)::B(J)+S(H)
- S(a);N_GUARD::QAB1(E),XS(a)
- S(a);N_GUARD::QAB1(E)
- Refutation
- P(f);XR(I)
- Try
- Q(E);CHECK
- Vars
- Q(e);N_PINS(H),SBLOCK,XQ(E)::B(J)+S(H)
- Refutation
- K(c);S_FLIGHT,XQ(E)
- Try
- Q(E);CHECK
- Vars
- K(c);S_FLIGHT,XR(D)::QAB1(E)
- S(g);P_SPINS(g)::R1(D)
- Refutation
- Q(e);N_PINS(H),XQ(E)
- Try
- Q(E);N_SPINS(H),XQ(e)
- Threat
- DUALS(10)
- Refutation
- S(g);
- Try
- Actual
- Q(E);
- Threat
- QAB(E)+R(I),DCHECK
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XS(H)::QAB(E)+R(I),XQ(e)
- K(c);S_FLIGHT,XR(D)::QAB(E)+R(I)
- K(c);S_FLIGHT::S(B)
- Q(e);N_PINS(H),SBLOCK,XR(D)::B(J)+S(H)
- Q(e);N_PINS(H),SBLOCK::B(J)+S(H)
- Q(e);N_PINS(H)::QAB(E)+R(I),DCHECK,XQ(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).