MESON Chess Problem Database
Problem Display
PID: 173819 (4b3/2K3Bn/1Np1Pp2/p1kp4/p2N1Q2/P7/Bn6/b7 w - - 0 1)
Borovik, Boris V
Die Schwalbe, 1948
#2
8 + 10
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bh5
- 2.Sd7#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sd1
- 2.Sxa4#
- 1...Sd3
- 2.Sxa4#
- 1...Sc4
- 2.Sxa4#
- 1...Sg5
- 2.Bf8#
- 1...Sf8
- 2.Bxf8#
- 1...f5
- 2.Qd6#
- 1...Bh5
- Tries
- 1.Kb7?
- 1...Bh5
- 2.Sd7#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sd1
- 2.Sxa4#
- 1...Sd3
- 2.Sxa4#
- 1...Sc4
- 2.Sxa4#
- 1...Sg5
- 2.Bf8#
- 1...Sf8
- 2.Bxf8#
- 1...f5!
- 1...Bh5
- 1.Bb3?
- 1...Sg5
- 2.Bf8#
- 1...Bh5
- 2.Sd7#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sd1
- 2.Sxa4#
- 1...Sd3
- 2.Sxa4#
- 1...Sc4
- 2.Sxa4#
- 1...Sf8
- 2.Bxf8#
- 1...f5
- 2.Qd6#
- 1...axb3!
- 1...Sg5
- 1.Bxf6?
- threat
- 2.Be7#
- 2.Qd6#
- 1...Sc4
- 2.Sxa4#
- 1...Sxf6!
- threat
- 1.Bh6?
- 1...Sg5
- 2.Bf8#
- 1...Bh5
- 2.Sd7#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sd1
- 2.Sxa4#
- 1...Sd3
- 2.Sxa4#
- 1...Sc4
- 2.Sxa4#
- 1...Sf8
- 2.Bxf8#
- 1...f5!
- 1...Sg5
- 1.Qd2?
- 1...Sg5
- 2.Bf8#
- 1...Bh5
- 2.Sd7#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sd1
- 2.Sxa4#
- 1...Sc4
- 2.Sxa4#
- 1...Sf8
- 2.Bxf8#
- 1...f5
- 2.Qxa5#
- 1...Sd3!
- 1...Sg5
- 1.Qe3?
- 1...Sg5
- 2.Bf8#
- 1...Bh5
- 2.Sd7#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sd1
- 2.Sxa4#
- 1...Sd3
- 2.Sxa4#
- 1...Sc4
- 2.Sxa4#
- 1...Sf8
- 2.Bxf8#
- 1...f5!
- 1...Sg5
- 1.Qe5?
- 1...Sg5
- 2.Bf8#
- 1...Bh5
- 2.Sd7#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sd1
- 2.Sxa4#
- 1...Sd3
- 2.Sxa4#
- 1...Sc4
- 2.Sxa4#
- 1...Sf8
- 2.Bxf8#
- 1...f5
- 2.Qd6#
- 1...fxe5!
- 1...Sg5
- 1.Qf2?
- 1...Sg5
- 2.Bf8#
- 1...Bh5
- 2.Sd7#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sd1
- 2.Sxa4#
- 1...Sd3
- 2.Sxa4#
- 1...Sc4
- 2.Sxa4#
- 1...Sf8
- 2.Bxf8#
- 1...f5!
- 1...Sg5
- 1.Qg4?
- 1...Sg5
- 2.Bf8#
- 1...Bh5
- 2.Sd7#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sd1
- 2.Sxa4#
- 1...Sd3
- 2.Sxa4#
- 1...Sc4
- 2.Sxa4#
- 1...Sf8
- 2.Bxf8#
- 1...f5!
- 1...Sg5
- 1.Qxf6?
- threat
- 2.Qe7#
- 1...Sc4
- 2.Sxa4#
- 1...Sxf6!
- threat
- 1.e7?
- 1...Bh5
- 2.Sd7#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sd1
- 2.Sxa4#
- 1...Sd3
- 2.Sxa4#
- 1...Sc4
- 2.Sxa4#
- 1...Sf8
- 2.exf8Q#
- 2.exf8B#
- 1...f5
- 2.Qd6#
- 1...Sg5!
- 1...Bh5
- 1.Kb7?
- Keys
- 1.Qh4!
- 1...Sg5
- 2.Bf8#
- 1...Bh5
- 2.Sd7#
- 1...Bg6
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 1...Sd1
- 2.Sxa4#
- 1...Sd3
- 2.Sxa4#
- 1...Sc4
- 2.Sxa4#
- 1...Sf8
- 2.Bxf8#
- 1...f5
- 2.Qe7#
- 1...Sg5
- 1.Qh4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(j);N_GUARD::S(E)
- B(j);N_GUARD::S(E),XB(j)
- S(b);N_GUARD::S(E),XP(c)
- S(i);N_GUARD::B(H)
- S(i);N_GUARD::B(H),XS(i)
- P(h);::QAB1(D)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- B(j);N_GUARD::S(E)
- B(j);N_GUARD::S(E),XB(j)
- S(b);N_GUARD::S(E),XP(c)
- S(i);N_GUARD::B(H)
- S(i);N_GUARD::B(H),XS(i)
- Refutation
- P(h);
- Try
- B(A);
- Vars
- S(i);N_GUARD::B(H)
- B(j);N_GUARD::S(E)
- B(j);N_GUARD::S(E),XB(j)
- S(b);N_GUARD::S(E),XP(c)
- S(i);N_GUARD::B(H),XS(i)
- P(h);::QAB1(D)
- Refutation
- P(c);XB(A)
- Try
- B(H);XP(h)
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::S(E),XP(c)
- Refutation
- S(i);XB(H)
- Try
- B(H);
- Vars
- S(i);N_GUARD::B(H)
- B(j);N_GUARD::S(E)
- B(j);N_GUARD::S(E),XB(j)
- S(b);N_GUARD::S(E),XP(c)
- S(i);N_GUARD::B(H),XS(i)
- Refutation
- P(h);
- Try
- Q(D);
- Vars
- S(i);N_GUARD::B(H)
- B(j);N_GUARD::S(E)
- B(j);N_GUARD::S(E),XB(j)
- S(b);N_GUARD::S(E),XP(c)
- S(i);N_GUARD::B(H),XS(i)
- P(h);::QAR2(D),XP(d)
- Refutation
- S(b);
- Try
- Q(D);
- Vars
- S(i);N_GUARD::B(H)
- B(j);N_GUARD::S(E)
- B(j);N_GUARD::S(E),XB(j)
- S(b);N_GUARD::S(E),XP(c)
- S(i);N_GUARD::B(H),XS(i)
- Refutation
- P(h);
- Try
- Q(D);P_PINP(f)
- Vars
- S(i);N_GUARD::B(H)
- B(j);N_GUARD::S(E)
- B(j);N_GUARD::S(E),XB(j)
- S(b);N_GUARD::S(E),XP(c)
- S(i);N_GUARD::B(H),XS(i)
- P(h);::QAB1(D)
- Refutation
- P(h);N_SPINP(f),XQ(D)
- Try
- Q(D);
- Vars
- S(i);N_GUARD::B(H)
- B(j);N_GUARD::S(E)
- B(j);N_GUARD::S(E),XB(j)
- S(b);N_GUARD::S(E),XP(c)
- S(i);N_GUARD::B(H),XS(i)
- Refutation
- P(h);
- Try
- Q(D);
- Vars
- S(i);N_GUARD::B(H)
- B(j);N_GUARD::S(E)
- B(j);N_GUARD::S(E),XB(j)
- S(b);N_GUARD::S(E),XP(c)
- S(i);N_GUARD::B(H),XS(i)
- Refutation
- P(h);
- Try
- Q(D);XP(h)
- Threat
- QAB(D)
- Vars
- S(b);N_GUARD::S(E),XP(c)
- Refutation
- S(i);XQ(D)
- Try
- P(F);
- Vars
- B(j);N_GUARD::S(E)
- B(j);N_GUARD::S(E),XB(j)
- S(b);N_GUARD::S(E),XP(c)
- S(i);OGATE::PXS(i)=Q
- P(h);::QAB1(D)
- Refutation
- S(i);
- Try
- Actual
- Q(D);
- Vars
- S(i);N_GUARD::B(H)
- B(j);N_GUARD::S(E)
- B(j);N_GUARD::S(E),XB(j)
- S(b);N_GUARD::S(E),XP(c)
- S(i);N_GUARD::B(H),XS(i)
- P(h);OGATE::QAB(D)
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).