MESON Chess Problem Database
Problem Display
PID: 147192 (8/4P3/3K1P2/1R1p1k1P/R3bN1Q/3q4/4n3/1BB1n3 w - - 0 1)
Albrecht, Hermann
Die Schwalbe, 1934
#2
10 + 6
| 14868 | Pirnie Collection | 2013 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Bxe4#
- 1...Qd2
- 2.Bxe4#
- 1...Qb3
- 2.Bxe4#
- 1...Qc3
- 2.Bxe4#
- 1...Qe3
- 2.Rxd5#
- 1...Qf3
- 2.Rxd5#
- 1...Qg3
- 2.Bxe4#
- 2.Rxd5#
- 1...Qh3
- 2.Bxe4#
- 2.Rxd5#
- 1...Sxf4
- 2.Qxf4#
- 1...Qd1
- Tries
- 1.Sxe2?
- threat
- 2.Qg5#
- 2.Qf4#
- 1...Qg3+
- 2.Sxg3#
- 1...Qd2
- 2.Sg3#
- 2.Bxe4#
- 1...Qe3
- 2.Rxd5#
- 1...Qf3
- 2.Sd4#
- 2.Rxd5#
- 2.Qg5#
- 1...Sg2
- 2.Qg5#
- 1...Sf3
- 2.Sg3#
- 2.Qf4#
- 1...Qa3+!
- threat
- 1.Sxd3?
- threat
- 2.Qg5#
- 1...Sxc1
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Sf3!
- threat
- 1.e8Q?
- threat
- 2.Qg6#
- 2.Qd7#
- 2.Qe5#
- 2.Qe6#
- 2.Qc8#
- 1...Qxb5
- 2.Qg6#
- 2.Qe5#
- 2.Qe6#
- 1...Sxf4
- 2.Qxf4#
- 2.Qe5#
- 1...Qc2
- 2.Qg6#
- 2.Qd7#
- 2.Qe5#
- 2.Qe6#
- 1...Qc4
- 2.Qg6#
- 2.Qd7#
- 2.Qe5#
- 2.Qe6#
- 1...Qc3
- 2.Bxe4#
- 2.Qg6#
- 2.Qd7#
- 2.Qxe4#
- 2.Qe6#
- 1...Qg3
- 2.Bxe4#
- 2.Rxd5#
- 2.Qd7#
- 2.Qxe4#
- 2.Qe5#
- 2.Qe6#
- 2.Qc8#
- 1...Qd4
- 2.Qg6#
- 2.Qd7#
- 2.Qe6#
- 2.Qc8#
- 1...Sf3
- 2.Qg6#
- 2.Qd7#
- 2.Qe6#
- 2.Qc8#
- 1...Sd4
- 2.Qg6#
- 2.Qe5#
- 1...Qa3+!
- threat
- 1.e8S?
- threat
- 2.Sg7#
- 1...Qg3
- 2.Bxe4#
- 2.Rxd5#
- 1...Qa3+!
- threat
- 1.e8B?
- threat
- 2.Bg6#
- 2.Bd7#
- 1...Qxb5
- 2.Bg6#
- 1...Sxf4
- 2.Qxf4#
- 1...Qg3
- 2.Bxe4#
- 2.Bd7#
- 2.Rxd5#
- 1...Sd4
- 2.Bg6#
- 1...Qa3+!
- threat
- 1.Sxe2?
- Keys
- 1.Sxd5!
- threat
- 2.Qg5#
- 1...Qa3+
- 2.Sb4#
- 1...Qg3+
- 2.Sf4#
- 1...Qxd5+
- 2.Rxd5#
- 1...Sxc1
- 2.Qf4#
- 1...Qd2
- 2.Bxe4#
- 1...Qe3
- 2.Sxe3#
- 1...Sf3
- 2.Qh3#
- 1...Sf4
- 2.Qxf4#
- threat
- 1.Sxd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 4
- Sets
- Q(c);OGATE,P_SPINB(d)::B(A),XB(d)
- Q(c);N_GUARD,P_SPINB(d)::R(F),XP(e)
- S(b);OGATE,XS(D)::QAR1(E),XS(b)
- Tries
- Try
- S(D);XS(b)
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,N_GUARD,P_SPINB(d)::S(D),XQ(c)
- Q(c);N_GUARD,P_SPINB(d)::R(F),XP(e)
- S(a);::QAR1(E)
- Refutation
- Q(c);CHECK,P_SPINB(d)
- Try
- S(D);XQ(c)
- Threat
- QAR1(E)
- Vars
- S(b);N_GUARD,XB(B)::QAR1(E)
- S(b);N_GUARD::QAR1(E),XS(b)
- Refutation
- S(a);
- Try
- P(J);
- Threat
- DUALS(5)
- Refutation
- Q(c);CHECK,P_SPINB(d)
- Try
- P(J);
- Threat
- S(J)
- Refutation
- Q(c);CHECK,P_SPINB(d)
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- Q(c);N_SPINP(e),P_SPINB(d),XR(F)::B(J)
- S(b);OGATE,XS(D)::QAR1(E),XS(b)
- S(b);::B(J)
- Refutation
- Q(c);CHECK,P_SPINB(d)
- Try
- Actual
- S(D);P_SPINS(D),XP(e)
- Threat
- QAR1(E)
- Vars
- Q(c);CHECK,N_PINS(D),P_SPINB(d)::R(F)+S(D)
- Q(c);CHECK,OGATE,P_SPINB(d),P_SPINQ(c),XS(D)::R(F),XQ(c)
- S(b);N_GUARD,XB(B)::QAR1(E)
- Q(c);OGATE,P_SPINB(d)::B(A),XB(d)
- Q(c);N_PINS(D),P_SPINB(d)::R(F)+S(D),DCHECK,XQ(c)
- S(a);S_CUTQ(c)::QAB(E)
- S(b);N_GUARD::QAR1(E),XS(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).