MESON Chess Problem Database
Problem Display
PID: 2834 (K7/P1pN2R1/2Ppp3/5pp1/2P1k1B1/4P3/p1N1P2Q/q6b w - - 0 1)
Bettmann, Edgar
Bettmann, Henry Wald
Source?, 1882
#2
11 + 9
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Qxh1#
- 1...Qc3
- 2.Qxh1#
- 1...Qd4
- 2.Qxh1#
- 1...Qe5
- 2.Qxh1#
- 1...Qf6
- 2.Sxf6#
- 2.Qxh1#
- 1...Qxg7
- 2.Qxh1#
- 1...Qb1
- 2.Sf6#
- 1...Qc1
- 2.Sf6#
- 1...Qd1
- 2.Sf6#
- 1...Qe1
- 2.Sf6#
- 1...Qf1
- 2.Sf6#
- 1...Qg1
- 2.Sf6#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Bxf3#
- 1...fxg4
- 2.Qh7#
- 1...f4
- 2.Qh7#
- 1...d5
- 2.Sc5#
- 1...e5
- 2.Sf6#
- 1...Qb2
- Tries
- 1.Rxg5?
- threat
- 2.Qf4#
- 1...Qe5
- 2.Qxh1#
- 1...Qf1
- 2.Sf6#
- 1...f4
- 2.Qxf4#
- 2.Qh7#
- 1...e5
- 2.Sf6#
- 2.Bxf5#
- 1...Qh8+!
- threat
- 1.Re7?
- 1...fxg4
- 2.Qh7#
- 1...Qb2
- 2.Qxh1#
- 1...Qc3
- 2.Qxh1#
- 1...Qd4
- 2.Qxh1#
- 1...Qe5
- 2.Qxh1#
- 1...Qf6
- 2.Sxf6#
- 2.Qxh1#
- 1...Qg7
- 2.Qxh1#
- 1...Qb1
- 2.Sf6#
- 2.Rxe6#
- 1...Qc1
- 2.Sf6#
- 2.Rxe6#
- 1...Qd1
- 2.Sf6#
- 2.Rxe6#
- 1...Qe1
- 2.Sf6#
- 2.Rxe6#
- 1...Qf1
- 2.Sf6#
- 2.Rxe6#
- 1...Qg1
- 2.Sf6#
- 2.Rxe6#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Bxf3#
- 1...f4
- 2.Qh7#
- 1...d5
- 2.Sc5#
- 1...e5
- 2.Sf6#
- 1...Qh8+!
- 1...fxg4
- 1.Rf7?
- 1...fxg4
- 2.Qh7#
- 1...Qb2
- 2.Qxh1#
- 1...Qc3
- 2.Qxh1#
- 1...Qd4
- 2.Qxh1#
- 1...Qe5
- 2.Qxh1#
- 1...Qf6
- 2.Sxf6#
- 2.Qxh1#
- 1...Qg7
- 2.Qxh1#
- 1...Qb1
- 2.Sf6#
- 1...Qc1
- 2.Sf6#
- 1...Qd1
- 2.Sf6#
- 1...Qe1
- 2.Sf6#
- 1...Qf1
- 2.Sf6#
- 1...Qg1
- 2.Sf6#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Bxf3#
- 1...f4
- 2.Qh7#
- 1...d5
- 2.Sc5#
- 1...e5
- 2.Sf6#
- 2.Bxf5#
- 1...Qh8+!
- 1...fxg4
- 1.Rg8?
- 1...fxg4
- 2.Qh7#
- 1...Qb2
- 2.Qxh1#
- 1...Qc3
- 2.Qxh1#
- 1...Qd4
- 2.Qxh1#
- 1...Qe5
- 2.Qxh1#
- 1...Qf6
- 2.Sxf6#
- 2.Qxh1#
- 1...Qg7
- 2.Qxh1#
- 1...Qb1
- 2.Sf6#
- 1...Qc1
- 2.Sf6#
- 1...Qd1
- 2.Sf6#
- 1...Qe1
- 2.Sf6#
- 1...Qf1
- 2.Sf6#
- 1...Qg1
- 2.Sf6#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Bxf3#
- 1...f4
- 2.Qh7#
- 1...d5
- 2.Sc5#
- 1...e5
- 2.Sf6#
- 1...Qh8!
- 1...fxg4
- 1.Qe5+?
- 1...dxe5
- 2.Sc5#
- 2.Sf6#
- 1...Qxe5!
- 1...dxe5
- 1.Qxd6?
- threat
- 2.Sc5#
- 2.Qd3#
- 1...fxg4
- 2.Qd3#
- 1...Qc3
- 2.Sc5#
- 1...Qd4
- 2.Qxd4#
- 1...Qe5
- 2.Qxe5#
- 2.Qd3#
- 1...Qd1
- 2.Sc5#
- 2.Sf6#
- 2.Qe5#
- 2.Qxe6#
- 1...cxd6!
- threat
- 1.Qh4?
- threat
- 2.Bf3#
- 1...fxg4
- 2.Qxg4#
- 2.Qh7#
- 1...Bf3
- 2.Bxf3#
- 1...f4
- 2.Qh7#
- 1...gxh4!
- threat
- 1.Rxg5?
- Keys
- 1.Bh5!
- 1...Qxg7
- 2.Qxh1#
- 1...f4
- 2.Bg6#
- 1...Qb2
- 2.Qxh1#
- 1...Qc3
- 2.Qxh1#
- 1...Qd4
- 2.Qxh1#
- 1...Qe5
- 2.Qxh1#
- 1...Qf6
- 2.Sxf6#
- 2.Qxh1#
- 1...Qb1
- 2.Sf6#
- 1...Qc1
- 2.Sf6#
- 1...Qd1
- 2.Sf6#
- 1...Qe1
- 2.Sf6#
- 1...Qf1
- 2.Sf6#
- 1...Qg1
- 2.Sf6#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Bxf3#
- 1...g4
- 2.Qf4#
- 1...d5
- 2.Sc5#
- 1...e5
- 2.Sf6#
- 1...Qxg7
- 1.Bh5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(a);N_GUARD::QAB(C),XB(b)
- Q(a);N_GUARD,XR(J)::QAB(C),XB(b)
- Q(a);N_GUARD::S(I)
- B(b);N_GUARD::QAB(C),XB(b)
- B(b);N_GUARD::B(F),XB(b)
- P(e);OGATEB,XB(F)::QAB(C)
- P(e);OGATEB::QAB(C)
- P(g);N_GUARD::S(I)
- P(h);S_CUTQ(a)::S(I)
- Tries
- Try
- R(J);XP(f)
- Threat
- QAR1(C)
- Vars
- Q(a);N_GUARD::QAB(C),XB(b)
- Q(a);N_GUARD::S(I)
- Refutation
- Q(a);CHECK
- Try
- R(J);P_PINP(h)
- Vars
- P(e);OGATEB,XB(F)::QAB(C)
- Q(a);N_GUARD::QAB(C),XB(b)
- Q(a);N_GUARD,N_SPINP(h)::QAB(C),XB(b)
- B(b);N_GUARD::QAB(C),XB(b)
- B(b);N_GUARD::B(F),XB(b)
- P(e);OGATEB::QAB(C)
- P(g);N_GUARD::S(I)
- P(h);S_CUTQ(a)::S(I)
- Refutation
- Q(a);CHECK
- Try
- R(J);
- Vars
- P(e);OGATEB,XB(F)::QAB(C)
- Q(a);N_GUARD::QAB(C),XB(b)
- Q(a);N_GUARD::S(I)
- B(b);N_GUARD::QAB(C),XB(b)
- B(b);N_GUARD::B(F),XB(b)
- P(e);OGATEB::QAB(C)
- P(g);N_GUARD::S(I)
- Refutation
- Q(a);CHECK
- Try
- R(J);
- Vars
- P(e);OGATEB,XB(F)::QAB(C)
- Q(a);N_GUARD::QAB(C),XB(b)
- Q(a);N_GUARD::S(I)
- B(b);N_GUARD::QAB(C),XB(b)
- B(b);N_GUARD::B(F),XB(b)
- P(e);OGATEB::QAB(C)
- P(g);N_GUARD::S(I)
- P(h);S_CUTQ(a)::S(I)
- Refutation
- Q(a);P_PINR(J)
- Try
- Q(C);CHECK
- Refutation
- Q(a);XQ(C)
- Try
- Q(C);XP(g)
- Threat
- DUALS(2)
- Vars
- P(e);XB(F)::QAB1(C)
- Q(a);::S(I)
- Q(a);N_GUARD::QAR1(C),XQ(a)
- Refutation
- P(i);XQ(C)
- Try
- Q(C);
- Threat
- QAR(C)+B(F),DCHECK
- Vars
- B(b);::QAR(C)+B(F),DCHECK,XB(b)
- P(e);OGATEB::QAB(C)
- Refutation
- P(f);XQ(C)
- Try
- Actual
- B(F);
- Vars
- Q(a);N_GUARD,XR(J)::QAB(C),XB(b)
- P(e);OGATEB::B(F)
- Q(a);N_GUARD::QAB(C),XB(b)
- Q(a);N_GUARD::S(I)
- B(b);N_GUARD::QAB(C),XB(b)
- B(b);N_GUARD::B(F),XB(b)
- P(f);N_GUARD::QAR1(C)
- P(g);N_GUARD::S(I)
- P(h);S_CUTQ(a)::S(I)
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).