MESON Chess Problem Database
Problem Display
PID: 149416 (8/6N1/3ppN2/2nPk1P1/1p6/2r1B3/1Q1RRnK1/8 w - - 0 1)
Albrecht, Hermann
Comm., Die Schwalbe, 1948
#2
9 + 7
| 274 | diagrammes | 1974 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Sfe4
- 2.Sg4#
- 1...Sce4
- 2.Sd7#
- 1...b3
- 2.Qxc3#
- 1...exd5
- 2.Rxd5#
- 1...Sfe4
- Tries
- 1.Sg4+?
- 1...Ke4
- 2.Rd4#
- 1...Sxg4!
- 1...Ke4
- 1.Sd7+?
- 1...Ke4
- 2.Rd4#
- 1...Sxd7!
- 1...Ke4
- 1.Bxf2+?
- 1...Se4
- 2.Bg3#
- 2.Rxe4#
- 1...Kf4!
- 1...Se4
- 1.Bxc5+?
- 1...Se4
- 2.Rxe4#
- 1...Kf4!
- 1...Se4
- 1.Rd4?
- 1...Rxe3
- 2.Rxb4#
- 2.Rc4#
- 2.Re4#
- 2.Rg4#
- 2.Rh4#
- 1...exd5
- 2.Rxd5#
- 1...Sd1
- 2.Sg4#
- 1...Rc1
- 2.Bf4#
- 2.Re4#
- 1...Rc2
- 2.Bf4#
- 2.Re4#
- 1...Ra3
- 2.Bf4#
- 2.Re4#
- 1...Rb3
- 2.Bf4#
- 2.Re4#
- 1...Rd3
- 2.Bf4#
- 2.Rxd3#
- 2.Re4#
- 1...Rc4
- 2.Bf4#
- 2.Rxc4#
- 2.Re4#
- 1...Sh1
- 2.Sg4#
- 1...Sfd3
- 2.Sg4#
- 1...Sh3
- 2.Sg4#
- 1...Sfe4
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- 1...Sb3
- 2.Sd7#
- 1...Scd3
- 2.Sd7#
- 2.Bxf2#
- 1...Sa4
- 2.Sd7#
- 1...Sce4
- 2.Sd7#
- 1...Sa6
- 2.Sd7#
- 1...Sb7
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...b3!
- 1...Rxe3
- 1.Rxf2?
- threat
- 2.Bd4#
- 2.Bf4#
- 1...Sb3
- 2.Bf4#
- 1...Sd3!
- threat
- 1.Qxb4?
- threat
- 2.Bf4#
- 2.Qxc3#
- 2.Qd4#
- 2.Qf4#
- 1...Rxe3
- 2.Qd4#
- 1...exd5
- 2.Bf4#
- 2.Rxd5#
- 2.Qd4#
- 2.Qf4#
- 1...Sd1
- 2.Sg4#
- 2.Bf4#
- 2.Qd4#
- 2.Qf4#
- 1...Rc1
- 2.Bf4#
- 2.Qd4#
- 2.Qf4#
- 1...Rc2
- 2.Bf4#
- 2.Qd4#
- 2.Qf4#
- 1...Ra3
- 2.Bf4#
- 2.Qd4#
- 2.Qf4#
- 1...Rb3
- 2.Bf4#
- 2.Qd4#
- 2.Qf4#
- 1...Rd3
- 2.Bf4#
- 2.Qf4#
- 1...Sfd3
- 2.Bf4#
- 2.Bxc5#
- 2.Qxc3#
- 2.Qd4#
- 1...Sh3
- 2.Sg4#
- 2.Bf4#
- 2.Qxc3#
- 2.Qd4#
- 1...Sfe4
- 2.Sg4#
- 2.Qd4#
- 1...Sb3
- 2.Sd7#
- 2.Bf4#
- 2.Qf4#
- 1...Scd3
- 2.Bxf2#
- 2.Bf4#
- 2.Qxc3#
- 2.Qd4#
- 1...Sa4
- 2.Sd7#
- 2.Bf4#
- 2.Qd4#
- 2.Qf4#
- 1...Sce4
- 2.Sd7#
- 2.Qd4#
- 1...Rc4!
- threat
- 1.Sg4+?
- Keys
- 1.Kf3!
- 1...exd5
- 2.Rxd5#
- 1...Sd1
- 2.Sg4#
- 1...Sh1
- 2.Sg4#
- 1...Sfd3
- 2.Bxc5#
- 1...Sh3
- 2.Sg4#
- 1...Sfe4
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- 1...Sb3
- 2.Sd7#
- 1...Scd3
- 2.Bxf2#
- 1...Sa4
- 2.Sd7#
- 1...Sce4
- 2.Sd7#
- 1...Sa6
- 2.Sd7#
- 1...Sb7
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...b3
- 2.Qxc3#
- 1...exd5
- 1.Kf3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 11
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD,SBLOCK::S(H)
- S(d);N_GUARD,SBLOCK::S(H)
- P(c);N_GUARD::QAB(A),XR(b)
- P(g);OGATE,XP(F)::R1(B),XP(g)
- Tries
- Try
- S(H);CHECK
- Vars
- K(e);N_SPINR(b),P-FLIGHT::R1(B)
- Refutation
- S(a);XS(H)
- Try
- S(H);CHECK
- Vars
- K(e);N_SPINR(b),P-FLIGHT::R1(B)
- Refutation
- S(d);XS(H)
- Try
- B(E);CHECK,XS(a)
- Refutation
- K(e);N_SPINR(b),S_FLIGHT
- Try
- B(E);CHECK,XS(d)
- Vars
- S(a);N_GUARD,P_SPINS(a)::R1(C),XS(a)
- Refutation
- K(e);N_SPINR(b),S_FLIGHT
- Try
- R(B);N_PINR(b)
- Vars
- P(g);OGATE,XP(F)::R1(B),XP(g)
- S(a);N_GUARD::S(H)
- S(a);N_GUARD::S(H),XS(a)
- S(d);N_GUARD::S(H)
- S(d);N_GUARD::S(H),XS(d)
- Refutation
- P(c);
- Try
- R(C);XS(a)
- Threat
- DUALS(2)
- Vars
- S(d);::B(E)
- Refutation
- S(d);
- Try
- Q(A);N_PINR(b),XP(c)
- Threat
- DUALS(4)
- Vars
- R(b);P_SPINR(b),XB(E)::QAB1(A)
- Refutation
- R(b);
- Try
- Actual
- K(D);P_SPINB(E),S_FLIGHT
- Vars
- P(g);XP(F)::R1(B),XP(g)
- S(a);N_GUARD::S(H)
- S(a);N_PINB(E)::R(C)+B(E),XS(d)
- S(a);N_GUARD::S(H),XS(a)
- S(d);N_GUARD::S(H)
- S(d);N_PINB(E)::R(C)+B(E),XS(a)
- S(d);N_GUARD::S(H),XS(d)
- P(c);N_GUARD::QAB(A),XR(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).