MESON Chess Problem Database
Problem Display
PID: 227888 (8/4K3/p2pn2B/Q1bpkp2/5p2/1N3B2/2P2P2/8 w - - 0 1)
Buchwald, Julius
Revista de Sah, 1926
#2
7 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bxf2
- 2.Qxd5#
- 1...Ba3
- 2.Qe1#
- 2.Qxd5#
- 1...Be3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bd4
- 2.Qxd5#
- 1...Bb6
- 2.Qxd5#
- 1...Ba7
- 2.Qxd5#
- 1...Sd4
- 2.Bg7#
- 1...Sg5
- 2.Bg7#
- 1...Sc7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sd8
- 2.Bg7#
- 1...Sf8
- 2.Bg7#
- 1...d4
- 2.Qe1#
- 1...Bxf2
- Tries
- 1.Sa1?
- 1...Bxf2
- 2.Qxd5#
- 1...Ba3
- 2.Qxd5#
- 1...Be3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bd4
- 2.Qxd5#
- 1...Bb6
- 2.Qxd5#
- 1...Ba7
- 2.Qxd5#
- 1...Sd4
- 2.Bg7#
- 1...Sg5
- 2.Bg7#
- 1...Sc7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sd8
- 2.Bg7#
- 1...Sf8
- 2.Bg7#
- 1...d4
- 2.Qe1#
- 1...Kd4!
- 1...Bxf2
- 1.Sc1?
- 1...Bxf2
- 2.Qxd5#
- 1...Ba3
- 2.Qxd5#
- 1...Be3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bd4
- 2.Sd3#
- 2.Qxd5#
- 1...Bb6
- 2.Qxd5#
- 1...Ba7
- 2.Qxd5#
- 1...Sd4
- 2.Sd3#
- 2.Bg7#
- 1...Sg5
- 2.Bg7#
- 1...Sc7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sd8
- 2.Bg7#
- 1...Sf8
- 2.Bg7#
- 1...d4
- 2.Sd3#
- 2.Qe1#
- 1...Kd4!
- 1...Bxf2
- 1.Sd4?
- threat
- 2.Sc6#
- 1...Bxd4
- 2.Qxd5#
- 1...Sxd4
- 2.Bg7#
- 1...Sd8
- 2.Bg7#
- 1...Kxd4!
- threat
- 1.Bh1?
- 1...Bxf2
- 2.Qxd5#
- 1...Ba3
- 2.Qe1#
- 2.Qxd5#
- 1...Be3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bd4
- 2.Qxd5#
- 1...Bb6
- 2.Qxd5#
- 1...Ba7
- 2.Qxd5#
- 1...Sd4
- 2.Bg7#
- 1...Sg5
- 2.Bg7#
- 1...Sc7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sd8
- 2.Bg7#
- 1...Sf8
- 2.Bg7#
- 1...d4
- 2.Qe1#
- 1...f3!
- 1...Bxf2
- 1.Bg2?
- 1...Bxf2
- 2.Qxd5#
- 1...Ba3
- 2.Qe1#
- 2.Qxd5#
- 1...Be3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bd4
- 2.Qxd5#
- 1...Bb6
- 2.Qxd5#
- 1...Ba7
- 2.Qxd5#
- 1...Sd4
- 2.Bg7#
- 1...Sg5
- 2.Bg7#
- 1...Sc7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sd8
- 2.Bg7#
- 1...Sf8
- 2.Bg7#
- 1...d4
- 2.Qe1#
- 1...f3!
- 1...Bxf2
- 1.Bf8?
- 1...Bxf2
- 2.Qxd5#
- 1...Ba3
- 2.Qe1#
- 2.Qxd5#
- 1...Be3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bd4
- 2.Qxd5#
- 1...Bb6
- 2.Qxd5#
- 1...Ba7
- 2.Qxd5#
- 1...Sd4
- 2.Bg7#
- 1...Sg5
- 2.Bg7#
- 1...Sc7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sd8
- 2.Bg7#
- 1...d4
- 2.Qe1#
- 1...Sxf8!
- 1...Bxf2
- 1.Qd2?
- threat
- 2.Qxd5#
- 1...Sd4
- 2.Bxf4#
- 2.Bg7#
- 2.Qxf4#
- 1...Sc7
- 2.Bxf4#
- 2.Bg7#
- 2.Qxf4#
- 1...d4
- 2.Qe1#
- 2.Qe2#
- 1...Bd4!
- threat
- 1.Qc3+?
- 1...Sd4
- 2.Bg7#
- 1...d4
- 2.Qe1#
- 1...Bd4!
- 1...Sd4
- 1.Qa1+?
- 1...Sd4
- 2.Bg7#
- 1...d4
- 2.Qe1#
- 1...Bd4!
- 1...Sd4
- 1.Qxc5?
- threat
- 2.Qxd6#
- 2.Qxd5#
- 1...Sxc5
- 2.Bg7#
- 1...Sc7
- 2.Bg7#
- 2.Qd4#
- 2.Qxd6#
- 1...dxc5!
- threat
- 1.Qxa6?
- 1...Bxf2
- 2.Qxd6#
- 1...Bd4
- 2.Qxd6#
- 1...Ba3
- 2.Qe2#
- 1...Be3
- 2.Qxd6#
- 1...Bb4
- 2.Qe2#
- 1...Ba7
- 2.Qxd6#
- 1...Sd4
- 2.Bg7#
- 1...Sg5
- 2.Bg7#
- 1...Sc7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sd8
- 2.Bg7#
- 1...Sf8
- 2.Bg7#
- 1...d4
- 2.Qe2#
- 1...Bb6!
- 1...Bxf2
- 1.c3?
- 1...Bxf2
- 2.Qxd5#
- 1...Bd4
- 2.Qxd5#
- 1...Ba3
- 2.Qxd5#
- 1...Be3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bb6
- 2.Qxd5#
- 1...Ba7
- 2.Qxd5#
- 1...Sd4
- 2.Bg7#
- 1...Sg5
- 2.Bg7#
- 1...Sc7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sd8
- 2.Bg7#
- 1...Sf8
- 2.Bg7#
- 1...d4!
- 1...Bxf2
- 1.c4?
- 1...Bxf2
- 2.Qxd5#
- 1...Bd4
- 2.Qxd5#
- 1...Ba3
- 2.Qe1#
- 2.Qxd5#
- 1...Be3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bb6
- 2.Qxd5#
- 1...Ba7
- 2.Qxd5#
- 1...Sd4
- 2.Bg7#
- 1...Sg5
- 2.Bg7#
- 1...Sc7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sd8
- 2.Bg7#
- 1...Sf8
- 2.Bg7#
- 1...d4
- 2.Qe1#
- 1...dxc4!
- 1...Bxf2
- 1.Sa1?
- Keys
- 1.Sd2!
- 1...Kd4
- 2.Qa1#
- 1...Bxf2
- 2.Qxd5#
- 1...Ba3
- 2.Qxd5#
- 1...Be3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bd4
- 2.Sc4#
- 2.Qxd5#
- 1...Bb6
- 2.Qxd5#
- 1...Ba7
- 2.Qxd5#
- 1...Sd4
- 2.Bg7#
- 1...Sg5
- 2.Bg7#
- 1...Sc7
- 2.Bg7#
- 1...Sg7
- 2.Bxg7#
- 1...Sd8
- 2.Bg7#
- 1...Sf8
- 2.Bg7#
- 1...d4
- 2.Sc4#
- 1...Kd4
- 1.Sd2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- B(b);OGATE,P_SPINP(c),XP(B)::QAR1(E),XP(c)
- B(b);OGATE,P_SPINP(c)::QAR1(E),XP(c)
- S(h);N_GUARD::B(F)
- S(h);N_GUARD::B(F),XS(h)
- P(c);P_SPINB(b)::QAR(E)
- Tries
- Try
- S(C);
- Vars
- B(b);OGATE,P_SPINP(c),XP(B)::QAR1(E),XP(c)
- B(b);OGATE,P_SPINP(c)::QAR1(E),XP(c)
- S(h);N_GUARD,SBLOCK::B(F)
- S(h);N_GUARD::B(F)
- S(h);N_GUARD::B(F),XS(h)
- P(c);P_SPINB(b),SBLOCK::QAR(E)
- Refutation
- K(d);S_FLIGHT
- Try
- S(C);
- Vars
- B(b);OGATE,P_SPINP(c),XP(B)::QAR1(E),XP(c)
- B(b);OGATE,P_SPINP(c)::QAR1(E),XP(c)
- S(h);N_GUARD::B(F)
- S(h);N_GUARD::B(F),XS(h)
- Refutation
- K(d);S_FLIGHT
- Try
- S(C);
- Threat
- S(C)
- Vars
- B(b);OGATE,P_SPINP(c),XS(C)::QAR1(E),XP(c)
- S(h);N_GUARD,SBLOCK,XS(C)::B(F)
- S(h);N_GUARD::B(F)
- Refutation
- K(d);S_FLIGHT,XS(C)
- Try
- B(D);
- Vars
- B(b);OGATE,P_SPINP(c),XP(B)::QAR1(E),XP(c)
- B(b);OGATE,P_SPINP(c)::QAR1(E),XP(c)
- S(h);N_GUARD::B(F)
- S(h);N_GUARD::B(F),XS(h)
- P(c);P_SPINB(b)::QAR(E)
- Refutation
- P(a);
- Try
- B(D);
- Vars
- B(b);OGATE,P_SPINP(c),XP(B)::QAR1(E),XP(c)
- B(b);OGATE,P_SPINP(c)::QAR1(E),XP(c)
- S(h);N_GUARD::B(F)
- S(h);N_GUARD::B(F),XS(h)
- P(c);P_SPINB(b)::QAR(E)
- Refutation
- P(a);
- Try
- B(F);
- Vars
- B(b);OGATE,P_SPINP(c),XP(B)::QAR1(E),XP(c)
- B(b);OGATE,P_SPINP(c)::QAR1(E),XP(c)
- S(h);N_GUARD::B(F)
- S(h);N_GUARD::B(F),XS(h)
- P(c);P_SPINB(b)::QAR(E)
- Refutation
- S(h);XB(F)
- Try
- Q(E);
- Threat
- QAR1(E),XP(c)
- Refutation
- B(b);
- Try
- Q(E);CHECK
- Vars
- S(h);P_SPINS(h)::B(F)
- P(c);P_SPINP(c),S_CUTB(b)::QAR(E)
- Refutation
- B(b);P_SPINB(b)
- Try
- Q(E);CHECK
- Vars
- S(h);P_SPINS(h)::B(F)
- P(c);P_SPINP(c),S_CUTB(b)::QAR(E)
- Refutation
- B(b);P_SPINB(b)
- Try
- Q(E);P_PINP(c),XB(b)
- Threat
- DUALS(2)
- Vars
- S(h);N_GUARD,N_SPINP(c),XQ(E)::B(F)
- Refutation
- P(g);N_SPINP(c),XQ(E)
- Try
- Q(E);XP(f)
- Vars
- B(b);N_GUARD,XP(B)::QAB1(E),XP(g)
- B(b);N_GUARD::QAB1(E),XP(g)
- B(b);N_GUARD::QAR(E)
- S(h);N_GUARD::B(F)
- S(h);N_GUARD::B(F),XS(h)
- P(c);S_CUTB(b)::QAR(E)
- Refutation
- B(b);
- Try
- P(A);
- Vars
- B(b);OGATE,P_SPINP(c),XP(B)::QAR1(E),XP(c)
- B(b);OGATE,P_SPINP(c)::QAR1(E),XP(c)
- S(h);N_GUARD::B(F)
- S(h);N_GUARD::B(F),XS(h)
- Refutation
- P(c);P_SPINB(b)
- Try
- P(A);
- Vars
- B(b);OGATE,P_SPINP(c),XP(B)::QAR1(E),XP(c)
- B(b);OGATE,P_SPINP(c)::QAR1(E),XP(c)
- S(h);N_GUARD::B(F)
- S(h);N_GUARD::B(F),XS(h)
- P(c);P_SPINB(b)::QAR(E)
- Refutation
- P(c);P_SPINB(b),XP(A)
- Try
- Actual
- S(C);
- Vars
- K(d);S_FLIGHT::QAB(E)
- B(b);OGATE,P_SPINP(c),XP(B)::QAR1(E),XP(c)
- B(b);OGATE,P_SPINP(c)::QAR1(E),XP(c)
- S(h);N_GUARD,SBLOCK::B(F)
- S(h);N_GUARD::B(F)
- S(h);N_GUARD::B(F),XS(h)
- P(c);N_GUARD,P_SPINB(b),SBLOCK::S(C)
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).