MESON Chess Problem Database
Problem Display
PID: 274812 (3q1N2/3P2PB/4p3/5R2/1K2R3/7n/pp4N1/bkn3Qb w - - 0 1)
Blana, Hugo
Die Schwalbe, 1933
#2
9 + 9
SOLUTION
- SOUND
- Tries
- 1.Re1?
- threat
- 2.Rff1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Rfe5#
- 2.Rg5#
- 2.Rh5#
- 2.Rf6#
- 2.Rf7#
- 1...Qa5+
- 2.Rxa5#
- 1...Qb6+
- 2.Rb5#
- 1...Qe7+
- 2.Rc5#
- 1...Qb8+
- 2.Rb5#
- 1...Qxf8+
- 2.Rxf8#
- 1...Kc2
- 2.Rf2#
- 1...Qxd7
- 2.Rd5#
- 1...Bxg2
- 2.Rf3#
- 1...exf5
- 2.Bxf5#
- 1...Qg5
- 2.Rxg5#
- 1...Qf6
- 2.Rxf6#
- 1...Qc7
- 2.Rc5#
- 1...Qa8
- 2.Rd5#
- 1...Qc8
- 2.Rc5#
- 1...Qe8
- 2.Rf7#
- 1...Sf2
- 2.Rxf2#
- 1...Sf4
- 2.Rxf4#
- 1...Sg5
- 2.Rxg5#
- 1...e5
- 2.Rfxe5#
- 1...Qh4+!
- threat
- 1.Re2?
- threat
- 2.Rf1#
- 2.Rff2#
- 2.Rf3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Rfe5#
- 2.Rg5#
- 2.Rh5#
- 2.Rf6#
- 2.Rf7#
- 1...Qa5+
- 2.Rxa5#
- 1...Qb6+
- 2.Rb5#
- 1...Qe7+
- 2.Rc5#
- 1...Qb8+
- 2.Rb5#
- 1...Qxf8+
- 2.Rxf8#
- 1...Qxd7
- 2.Rd5#
- 1...Bxg2
- 2.Rf3#
- 1...Sxg1
- 2.Rf1#
- 1...exf5
- 2.Bxf5#
- 1...Qg5
- 2.Rxg5#
- 1...Qf6
- 2.Rxf6#
- 1...Qc7
- 2.Rc5#
- 1...Qa8
- 2.Rd5#
- 1...Qc8
- 2.Rc5#
- 1...Qe8
- 2.Rf7#
- 1...Sf2
- 2.Rfxf2#
- 1...Sf4
- 2.Rxf4#
- 1...Sg5
- 2.Rxg5#
- 1...e5
- 2.Rfxe5#
- 1...Qh4+!
- threat
- 1.Re3?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rff3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Rfe5#
- 2.Rg5#
- 2.Rh5#
- 2.Rf6#
- 2.Rf7#
- 1...Qa5+
- 2.Rxa5#
- 1...Qb6+
- 2.Rb5#
- 1...Qe7+
- 2.Rc5#
- 1...Qb8+
- 2.Rb5#
- 1...Qxf8+
- 2.Rxf8#
- 1...Kc2
- 2.Rf2#
- 1...Qxd7
- 2.Rd5#
- 1...Bxg2
- 2.Rff3#
- 1...Sxg1
- 2.Rf1#
- 1...exf5
- 2.Bxf5#
- 1...Qg5
- 2.Rxg5#
- 1...Qf6
- 2.Rxf6#
- 1...Qc7
- 2.Rc5#
- 1...Qa8
- 2.Rd5#
- 1...Qc8
- 2.Rc5#
- 1...Qe8
- 2.Rf7#
- 1...Sf2
- 2.Rxf2#
- 1...Sf4
- 2.Rxf4#
- 1...Sg5
- 2.Rxg5#
- 1...e5
- 2.Rfxe5#
- 1...Qh4+!
- threat
- 1.Rc4?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rff4#
- 2.Ra5#
- 2.Rb5#
- 2.Rfc5#
- 2.Rd5#
- 2.Re5#
- 2.Rg5#
- 2.Rh5#
- 2.Rf6#
- 2.Rf7#
- 1...Qa5+
- 2.Rxa5#
- 1...Qb6+
- 2.Rb5#
- 1...Qe7+
- 2.Rfc5#
- 1...Qb8+
- 2.Rb5#
- 1...Qxf8+
- 2.Rxf8#
- 1...Qxd7
- 2.Rd5#
- 1...Bxg2
- 2.Rf3#
- 1...Sxg1
- 2.Rf1#
- 1...exf5
- 2.Bxf5#
- 1...Qg5
- 2.Rxg5#
- 1...Qf6
- 2.Rxf6#
- 1...Qa8
- 2.Rd5#
- 1...Qe8
- 2.Rf7#
- 1...Sf2
- 2.Rxf2#
- 1...Sf4
- 2.Rfxf4#
- 1...Sg5
- 2.Rxg5#
- 1...e5
- 2.Rxe5#
- 1...Qh4!
- threat
- 1.Rd4?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rff4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rfd5#
- 2.Re5#
- 2.Rg5#
- 2.Rh5#
- 2.Rf6#
- 2.Rf7#
- 1...Qa5+
- 2.Rxa5#
- 1...Qb6+
- 2.Rb5#
- 1...Qe7+
- 2.Rc5#
- 1...Qb8+
- 2.Rb5#
- 1...Qxf8+
- 2.Rxf8#
- 1...Kc2
- 2.Rf2#
- 2.Rc5#
- 1...Bxg2
- 2.Rf3#
- 1...Sxg1
- 2.Rf1#
- 1...exf5
- 2.Bxf5#
- 1...Qg5
- 2.Rxg5#
- 1...Qf6
- 2.Rxf6#
- 1...Qc7
- 2.Rc5#
- 1...Qa8
- 2.Rfd5#
- 1...Qc8
- 2.Rc5#
- 1...Qe8
- 2.Rf7#
- 1...Sf2
- 2.Rxf2#
- 1...Sf4
- 2.Rfxf4#
- 1...Sg5
- 2.Rxg5#
- 1...e5
- 2.Rxe5#
- 1...Qh4!
- threat
- 1.Rh4?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rff4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.Rg5#
- 2.Rfh5#
- 2.Rf6#
- 2.Rf7#
- 1...Qa5+
- 2.Rxa5#
- 1...Qb6+
- 2.Rb5#
- 1...Qe7+
- 2.Rc5#
- 1...Qb8+
- 2.Rb5#
- 1...Qxf8+
- 2.Rxf8#
- 1...Kc2
- 2.Rf2#
- 1...Qxd7
- 2.Rd5#
- 1...Bxg2
- 2.Rf3#
- 1...Sxg1
- 2.Rf1#
- 1...exf5
- 2.Bxf5#
- 1...Qg5
- 2.Rxg5#
- 1...Qf6
- 2.Rxf6#
- 1...Qc7
- 2.Rc5#
- 1...Qa8
- 2.Rd5#
- 1...Qc8
- 2.Rc5#
- 1...Qe8
- 2.Rf7#
- 1...Sf2
- 2.Rxf2#
- 1...Sf4
- 2.Rfxf4#
- 1...Sg5
- 2.Rxg5#
- 1...e5
- 2.Rxe5#
- 1...Qxh4+!
- threat
- 1.Rxe6?
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Rfe5#
- 2.Rg5#
- 2.Rh5#
- 2.Rff6#
- 2.Rf7#
- 1...Qa5+
- 2.Rxa5#
- 1...Qb6+
- 2.Rb5#
- 1...Qe7+
- 2.Rc5#
- 1...Qb8+
- 2.Rb5#
- 1...Qxf8+
- 2.Rxf8#
- 1...Kc2
- 2.Rf2#
- 1...Qxd7
- 2.Rd5#
- 1...Bxg2
- 2.Rf3#
- 1...Sxg1
- 2.Rf1#
- 1...Qg5
- 2.Rxg5#
- 1...Qf6
- 2.Rfxf6#
- 1...Qc7
- 2.Rc5#
- 1...Qa8
- 2.Rd5#
- 1...Qc8
- 2.Rc5#
- 1...Qe8
- 2.Rf7#
- 1...Sf2
- 2.Rxf2#
- 1...Sf4
- 2.Rxf4#
- 1...Sg5
- 2.Rxg5#
- 1...Qh4+!
- threat
- 1.Re1?
- Keys
- 1.Rg4!
- threat
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rff4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.Rfg5#
- 2.Rh5#
- 2.Rf6#
- 2.Rf7#
- 1...Qa5+
- 2.Rxa5#
- 1...Qb6+
- 2.Rb5#
- 1...Qe7+
- 2.Rc5#
- 1...Qb8+
- 2.Rb5#
- 1...Qxf8+
- 2.Rxf8#
- 1...Kc2
- 2.Rf2#
- 1...Qxd7
- 2.Rd5#
- 1...Bxg2
- 2.Rf3#
- 1...Sxg1
- 2.Rf1#
- 1...exf5
- 2.Bxf5#
- 1...Qh4
- 2.Rh5#
- 1...Qg5
- 2.Rfxg5#
- 1...Qf6
- 2.Rxf6#
- 1...Qc7
- 2.Rc5#
- 1...Qa8
- 2.Rd5#
- 1...Qc8
- 2.Rc5#
- 1...Qe8
- 2.Rf7#
- 1...Sf2
- 2.Rxf2#
- 1...Sf4
- 2.Rfxf4#
- 1...Sg5
- 2.Rfxg5#
- 1...e5
- 2.Rxe5#
- threat
- 1.Rg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 21
- REMOVED MATES = 0
- Sets
- Tries
- Try
- R(D);
- Threat
- DUALS(13)
- Vars
- Q(i);CHECK::B(H)+R(E),XQ(i)
- Q(i);CHECK::B(H)+R(E)
- Q(i);CHECK,OGATE,XS(I)::B(H)+R(E),XQ(i)
- K(b);N_SPINS(c),S_FLIGHT::B(H)+R(E),DCHECK
- Q(i);XP(F)::B(H)+R(E)
- B(d);XS(B)::B(H)+R(E)
- P(h);OGATE,P_SPINP(h),XR(E)::B(H),XP(h)
- Q(i);::B(H)+R(E),XQ(i)
- Q(i);::B(H)+R(E)
- S(g);::B(H)+R(E),XS(g)
- P(h);::B(H)+R(E),XP(h)
- Refutation
- Q(i);CHECK
- Try
- R(D);
- Threat
- DUALS(13)
- Vars
- Q(i);CHECK::B(H)+R(E),XQ(i)
- Q(i);CHECK::B(H)+R(E)
- Q(i);CHECK,OGATE,XS(I)::B(H)+R(E),XQ(i)
- Q(i);XP(F)::B(H)+R(E)
- B(d);XS(B)::B(H)+R(E)
- S(g);N_SPINS(c),XQ(A)::B(H)+R(E)
- P(h);OGATE,P_SPINP(h),XR(E)::B(H),XP(h)
- Q(i);::B(H)+R(E),XQ(i)
- Q(i);::B(H)+R(E)
- S(g);::B(H)+R(E),XS(g)
- P(h);::B(H)+R(E),XP(h)
- Refutation
- Q(i);CHECK
- Try
- R(D);
- Threat
- DUALS(13)
- Vars
- Q(i);CHECK::B(H)+R(E),XQ(i)
- Q(i);CHECK::B(H)+R(E)
- Q(i);CHECK,OGATE,XS(I)::B(H)+R(E),XQ(i)
- K(b);N_SPINS(c),S_FLIGHT::B(H)+R(E),DCHECK
- Q(i);XP(F)::B(H)+R(E)
- B(d);XS(B)::B(H)+R(E)
- S(g);N_SPINS(c),XQ(A)::B(H)+R(E)
- P(h);OGATE,P_SPINP(h),XR(E)::B(H),XP(h)
- Q(i);::B(H)+R(E),XQ(i)
- Q(i);::B(H)+R(E)
- S(g);::B(H)+R(E),XS(g)
- P(h);::B(H)+R(E),XP(h)
- Refutation
- Q(i);CHECK
- Try
- R(D);
- Threat
- DUALS(13)
- Vars
- Q(i);CHECK::B(H)+R(E),XQ(i)
- Q(i);CHECK::B(H)+R(E)
- Q(i);CHECK,OGATE,XS(I)::B(H)+R(E),XQ(i)
- Q(i);XP(F)::B(H)+R(E)
- B(d);XS(B)::B(H)+R(E)
- S(g);N_SPINS(c),XQ(A)::B(H)+R(E)
- P(h);OGATE,P_SPINP(h),XR(E)::B(H),XP(h)
- Q(i);::B(H)+R(E),XQ(i)
- Q(i);::B(H)+R(E)
- S(g);::B(H)+R(E),XS(g)
- P(h);::B(H)+R(E),XP(h)
- Refutation
- Q(i);P_PINR(D)
- Try
- R(D);
- Threat
- DUALS(13)
- Vars
- Q(i);CHECK::B(H)+R(E),XQ(i)
- Q(i);CHECK::B(H)+R(E)
- Q(i);CHECK,OGATE,XS(I)::B(H)+R(E),XQ(i)
- B(d);XS(B)::B(H)+R(E)
- S(g);N_SPINS(c),XQ(A)::B(H)+R(E)
- P(h);OGATE,P_SPINP(h),XR(E)::B(H),XP(h)
- Q(i);::B(H)+R(E),XQ(i)
- Q(i);::B(H)+R(E)
- S(g);::B(H)+R(E),XS(g)
- P(h);::B(H)+R(E),XP(h)
- Refutation
- Q(i);P_PINR(D)
- Try
- R(D);
- Threat
- DUALS(13)
- Vars
- Q(i);CHECK::B(H)+R(E),XQ(i)
- Q(i);CHECK::B(H)+R(E)
- Q(i);CHECK,OGATE,XS(I)::B(H)+R(E),XQ(i)
- K(b);N_SPINS(c),S_FLIGHT::B(H)+R(E),DCHECK
- Q(i);XP(F)::B(H)+R(E)
- B(d);XS(B)::B(H)+R(E)
- S(g);N_SPINS(c),XQ(A)::B(H)+R(E)
- P(h);OGATE,P_SPINP(h),XR(E)::B(H),XP(h)
- Q(i);::B(H)+R(E),XQ(i)
- Q(i);::B(H)+R(E)
- S(g);::B(H)+R(E),XS(g)
- P(h);::B(H)+R(E),XP(h)
- Refutation
- Q(i);CHECK,XR(D)
- Try
- R(D);XP(h)
- Threat
- DUALS(13)
- Vars
- Q(i);CHECK::B(H)+R(E),XQ(i)
- Q(i);CHECK::B(H)+R(E)
- Q(i);CHECK,OGATE,XS(I)::B(H)+R(E),XQ(i)
- K(b);N_SPINS(c),S_FLIGHT::B(H)+R(E),DCHECK
- Q(i);XP(F)::B(H)+R(E)
- B(d);XS(B)::B(H)+R(E)
- S(g);N_SPINS(c),XQ(A)::B(H)+R(E)
- Q(i);::B(H)+R(E),XQ(i)
- Q(i);::B(H)+R(E)
- S(g);::B(H)+R(E),XS(g)
- Refutation
- Q(i);CHECK
- Try
- Actual
- R(D);
- Threat
- DUALS(13)
- Vars
- Q(i);CHECK::B(H)+R(E),XQ(i)
- Q(i);CHECK::B(H)+R(E)
- Q(i);CHECK,OGATE,XS(I)::B(H)+R(E),XQ(i)
- K(b);N_SPINS(c),S_FLIGHT::B(H)+R(E),DCHECK
- Q(i);XP(F)::B(H)+R(E)
- B(d);XS(B)::B(H)+R(E)
- S(g);N_SPINS(c),XQ(A)::B(H)+R(E)
- P(h);OGATE,P_SPINP(h),XR(E)::B(H),XP(h)
- Q(i);P_PINR(D)::B(H)+R(E)
- Q(i);::B(H)+R(E),XQ(i)
- Q(i);::B(H)+R(E)
- S(g);::B(H)+R(E),XS(g)
- P(h);::B(H)+R(E),XP(h)
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).