MESON Chess Problem Database
Problem Display
PID: 83764 (3b1R2/1P2p3/1B5p/R5p1/nQBpk2q/K1Pp2r1/6Nn/4Nr2 w - - 0 1)
Ellerman, Arnoldo
British Chess Magazine, 1949
#2
10 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rg4
- 2.Bxd3#
- 1...Bxb6
- 2.Qxe7#
- 1...Sf3
- 2.Bxd3#
- 1...dxc3
- 2.Ba2#
- 2.Bb3#
- 2.Bxd3#
- 2.Ba6#
- 2.Be6#
- 2.Bf7#
- 2.Bg8#
- 1...e5
- 2.Bd5#
- 1...Rg4
- Tries
- 1.Ba2?
- threat
- 2.Qxd4#
- 1...Bxb6
- 2.Qxe7#
- 1...e5
- 2.Bd5#
- 1...Sf3!
- threat
- 1.Bb3?
- threat
- 2.Qxd4#
- 1...Bxb6
- 2.Qxe7#
- 1...e5
- 2.Bd5#
- 1...Sf3!
- threat
- 1.Ba6?
- threat
- 2.Qxd4#
- 1...Bxb6
- 2.Qxe7#
- 1...Sf3
- 2.Bxd3#
- 1...e5!
- threat
- 1.Be6?
- threat
- 2.Qxd4#
- 1...Sf3
- 2.Bf5#
- 1...Bxb6!
- threat
- 1.Bf7?
- threat
- 2.Qxd4#
- 1...Rxe1
- 2.Bg6#
- 1...Bxb6
- 2.Qxe7#
- 1...e5
- 2.Bd5#
- 1...Sf3
- 2.Bg6#
- 1...Sc5!
- threat
- 1.Qc5?
- threat
- 2.Qxd4#
- 2.Qd5#
- 2.Qe5#
- 2.Qc6#
- 1...Rxg2
- 2.Qxd4#
- 2.Qe5#
- 1...Bxb6
- 2.Qxe7#
- 2.Qd5#
- 2.Qe5#
- 2.Qc6#
- 1...Sxc3
- 2.Qxd4#
- 2.Qe5#
- 1...Sxb6
- 2.Qxd4#
- 2.Qe5#
- 1...dxc3
- 2.Qd4#
- 2.Qd5#
- 2.Qe5#
- 2.Qc6#
- 1...Sf3
- 2.Bxd3#
- 2.Qd5#
- 2.Qf5#
- 2.Qc6#
- 1...Qf4
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 1...Rf5
- 2.Qxd4#
- 2.Qxf5#
- 1...Rf6
- 2.Qxd4#
- 2.Qd5#
- 2.Qe5#
- 1...Bc7
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 1...Sg4
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 1...e5
- 2.Bd5#
- 2.Qd5#
- 2.Qxe5#
- 2.Qc6#
- 1...e6
- 2.Qxd4#
- 2.Qe5#
- 2.Qc6#
- 1...Sxc5!
- threat
- 1.Qd6?
- threat
- 2.Bd5#
- 2.Re5#
- 2.Qe5#
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 2.Qe6#
- 1...Rxf8
- 2.Re5#
- 2.Qe5#
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 2.Qe6#
- 1...Rxg2
- 2.Re5#
- 2.Qe5#
- 2.Qxd4#
- 2.Qe6#
- 1...Bxb6
- 2.Bd5#
- 2.Re5#
- 2.Qe5#
- 2.Qxe7#
- 2.Qd5#
- 2.Qc6#
- 2.Qe6#
- 1...Sxc3
- 2.Re5#
- 2.Qe5#
- 2.Qxd4#
- 2.Qe6#
- 1...Sxb6
- 2.Re5#
- 2.Qe5#
- 2.Qxd4#
- 2.Qe6#
- 1...dxc3
- 2.Bd5#
- 2.Re5#
- 2.Qe5#
- 2.Qd4#
- 2.Qd5#
- 2.Qc6#
- 2.Qe6#
- 1...Sf3
- 2.Bxd3#
- 2.Bd5#
- 2.Qd5#
- 2.Qc6#
- 2.Qg6#
- 1...Qh3
- 2.Bd5#
- 2.Re5#
- 2.Qe5#
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 1...Qf4
- 2.Bd5#
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 1...Qg4
- 2.Bd5#
- 2.Re5#
- 2.Qe5#
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 1...Rf5
- 2.Qxd4#
- 1...Rf6
- 2.Re5#
- 2.Qe5#
- 2.Qxd4#
- 2.Qd5#
- 1...Rf7
- 2.Re5#
- 2.Qe5#
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 2.Qe6#
- 1...Bc7
- 2.Bd5#
- 2.Re5#
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 1...Sg4
- 2.Bd5#
- 2.Qxd4#
- 2.Qd5#
- 2.Qc6#
- 1...Sc5
- 2.Bd5#
- 2.Qxd4#
- 2.Qd5#
- 1...e5
- 2.Bd5#
- 2.Rxe5#
- 2.Qxe5#
- 2.Qd5#
- 2.Qc6#
- 1...e6
- 2.Re5#
- 2.Qe5#
- 2.Qxd4#
- 2.Qc6#
- 2.Qxe6#
- 1...exd6!
- threat
- 1.Qb5?
- threat
- 2.Qc6#
- 2.Qd5#
- 2.Qe5#
- 1...Rxg2
- 2.Qe5#
- 1...Sxc3
- 2.Qe5#
- 1...Sxb6
- 2.Qe5#
- 1...Rf5
- 2.Qxf5#
- 1...Qf4
- 2.Qc6#
- 2.Qd5#
- 1...Rf6
- 2.Qd5#
- 2.Qe5#
- 1...Bc7
- 2.Qc6#
- 2.Qd5#
- 1...Sf3
- 2.Bxd3#
- 2.Qc6#
- 2.Qd5#
- 2.Qf5#
- 1...Sg4
- 2.Qc6#
- 2.Qd5#
- 1...e5
- 2.Bd5#
- 2.Qc6#
- 2.Qd5#
- 2.Qxe5#
- 1...e6
- 2.Qc6#
- 2.Qe5#
- 1...Sc5!
- threat
- 1.Ba2?
- Keys
- 1.Bg8!
- threat
- 2.Qxd4#
- 1...Bxb6
- 2.Qxe7#
- 1...Sf3
- 2.Bh7#
- 1...e5
- 2.Bd5#
- threat
- 1.Bg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- R(d);N_GUARD::B(F),XP(c)
- B(l);N_GUARD,XB(H)::QAR(E),XP(k)
- S(b);S_CUTR(d)::B(F),XP(c)
- P(k);SBLOCK::B(F)
- Tries
- Try
- B(F);P_PINP(f)
- Threat
- QAR1(E),XP(f)
- Vars
- B(l);N_GUARD,XB(H)::QAR(E),XP(k)
- P(k);SBLOCK::B(F)
- Refutation
- S(b);
- Try
- B(F);P_PINP(f)
- Threat
- QAR1(E),XP(f)
- Vars
- B(l);N_GUARD,XB(H)::QAR(E),XP(k)
- P(k);SBLOCK::B(F)
- Refutation
- S(b);
- Try
- B(F);P_PINP(f)
- Threat
- QAR1(E),XP(f)
- Vars
- B(l);N_GUARD,XB(H)::QAR(E),XP(k)
- S(b);S_CUTR(d)::B(F),XP(c)
- Refutation
- P(k);
- Try
- B(F);P_PINP(f)
- Threat
- QAR1(E),XP(f)
- Vars
- S(b);S_CUTR(a)::B(F)
- Refutation
- B(l);XB(H)
- Try
- B(F);P_PINP(f)
- Threat
- QAR1(E),XP(f)
- Vars
- R(a);N_GUARD,XS(A)::B(F)
- B(l);N_GUARD,XB(H)::QAR(E),XP(k)
- P(k);SBLOCK::B(F)
- S(b);S_CUTR(a)::B(F)
- Refutation
- S(e);
- Try
- Q(E);
- Threat
- DUALS(4)
- Refutation
- S(e);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(7)
- Vars
- R(a);::QAR1(E),XP(f)
- Refutation
- P(k);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- R(d);XS(B)::QAR1(E)
- S(e);XP(D)::QAR1(E)
- S(e);XB(H)::QAR1(E)
- R(a);N_GUARD::QAB1(E),XR(a)
- Refutation
- S(e);
- Try
- Actual
- B(F);P_PINP(f)
- Threat
- QAR1(E),XP(f)
- Vars
- B(l);N_GUARD,XB(H)::QAR(E),XP(k)
- S(b);S_CUTR(a)::B(F)
- P(k);SBLOCK::B(F)
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).