MESON Chess Problem Database
Problem Display
PID: 164791 (B4Q2/6K1/8/2PPpb2/3Pkrp1/R3b3/2PPn2N/5q2 w - - 0 1)
Ellerman, Arnoldo
Die Schwalbe, 1969
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Kxd4
- 2.Ra4#
- 1...Bxd4
- 2.d6#
- 1...Sxd4
- 2.Rxe3#
- 1...Kxd4
- Tries
- 1.Qd6?
- threat
- 2.Qxe5#
- 1...Kxd4
- 2.Ra4#
- 1...Sxd4
- 2.Rxe3#
- 1...exd4
- 2.d3#
- 1...Bxd4!
- threat
- 1.Qe7?
- threat
- 2.Qxe5#
- 1...Kxd4
- 2.Ra4#
- 1...Bxd4
- 2.d6#
- 1...Sxd4
- 2.Rxe3#
- 1...Be6!
- threat
- 1.Qf6?
- threat
- 2.Qxe5#
- 1...Bxd4
- 2.d6#
- 1...Sxd4
- 2.Rxe3#
- 1...exd4
- 2.d3#
- 2.d6#
- 1...Kxd4!
- threat
- 1.Qd6?
- Keys
- 1.Qb8!
- threat
- 2.Qxe5#
- 1...Kxd4
- 2.Qb4#
- 1...Bxd4
- 2.d6#
- 1...Sxd4
- 2.Rxe3#
- 1...exd4
- 2.d3#
- threat
- 1.Qb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(d);OGATEB,P-FLIGHT,XP(E)::R(D)
- B(c);SBLOCK,XP(E)::B(I)+P(G)
- S(b);SBLOCK,XP(E)::R1(D),XB(c)
- Tries
- Try
- Q(J);
- Threat
- QAR1(J),XP(g)
- Vars
- K(d);OGATEB,P-FLIGHT,XP(E)::R(D)
- S(b);SBLOCK,XP(E)::R1(D),XB(c)
- P(g);SBLOCK,XP(E)::P(B)
- Refutation
- B(c);XP(E)
- Try
- Q(J);P_PINP(g)
- Threat
- QAR1(J),XP(g)
- Vars
- K(d);N_SPINP(g),OGATEB,P-FLIGHT,XP(E)::R(D)
- B(c);SBLOCK,XP(E)::B(I)+P(G)
- S(b);SBLOCK,XP(E)::R1(D),XB(c)
- Refutation
- B(h);N_SPINP(g)
- Try
- Q(J);
- Threat
- QAR1(J),XP(g)
- Vars
- B(c);SBLOCK,XP(E)::B(I)+P(G)
- S(b);SBLOCK,XP(E)::R1(D),XB(c)
- Refutation
- K(d);P-FLIGHT,P_SPINP(g),XP(E)
- Try
- Actual
- Q(J);
- Threat
- QAR1(J),XP(g)
- Vars
- K(d);OGATEB,P-FLIGHT,XP(E)::QAR2(J)
- B(c);SBLOCK,XP(E)::B(I)+P(G)
- S(b);SBLOCK,XP(E)::R1(D),XB(c)
- P(g);SBLOCK,XP(E)::P(B)
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).