MESON Chess Problem Database
Problem Display
PID: 101569 (4brQ1/3p4/3BP1p1/4P2p/3N3R/1K2N1k1/7R/5B2 w - - 0 1)
Seilberger, Johann Joseph Petrus Adrianus
Good Companions, 1919
#2
10 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxf1
- 2.Sxf1#
- 1...Rf2
- 2.R2h3#
- 1...Rf3
- 2.Se2#
- 1...Rf4
- 2.R4h3#
- 1...Rf5
- 2.Sexf5#
- 1...Rf6
- 2.exf6#
- 1...Rf7
- 2.Qxg6#
- 1...Bf7
- 2.Sef5#
- 1...g5
- 2.Qxg5#
- 1...Rxf1
- Tries
- 1.Sdf5+?
- 1...Kf3
- 2.Be2#
- 1...Rxf5!
- 1...Kf3
- 1.Bd3?
- 1...Rxg8
- 2.Sf1#
- 1...Rf1
- 2.Sxf1#
- 1...Rf2
- 2.R2h3#
- 1...Rf3
- 2.Se2#
- 1...Rf4
- 2.R4h3#
- 1...Rf5
- 2.Sexf5#
- 1...Rf6
- 2.exf6#
- 1...Rf7
- 2.Qxg6#
- 1...Bf7
- 2.Sf1#
- 2.Sef5#
- 1...g5
- 2.Qxg5#
- 1...dxe6!
- 1...Rxg8
- 1.Bc4?
- 1...Rxg8
- 2.Sf1#
- 1...Rf1
- 2.Sxf1#
- 1...Rf2
- 2.R2h3#
- 1...Rf3
- 2.Se2#
- 1...Rf4
- 2.R4h3#
- 1...Rf5
- 2.Sexf5#
- 1...Rf6
- 2.exf6#
- 1...Rf7
- 2.Qxg6#
- 1...Bf7
- 2.Sf1#
- 2.Sef5#
- 1...g5
- 2.Qxg5#
- 1...dxe6!
- 1...Rxg8
- 1.Bb5?
- 1...Rxg8
- 2.Sf1#
- 1...Rf1
- 2.Sxf1#
- 1...Rf2
- 2.R2h3#
- 1...Rf3
- 2.Se2#
- 1...Rf4
- 2.R4h3#
- 1...Rf5
- 2.Sexf5#
- 1...Rf6
- 2.exf6#
- 1...Rf7
- 2.Qxg6#
- 1...Bf7
- 2.Sf1#
- 2.Sef5#
- 1...g5
- 2.Qxg5#
- 1...dxe6!
- 1...Rxg8
- 1.Ba6?
- 1...Rxg8
- 2.Sf1#
- 1...Rf1
- 2.Sxf1#
- 1...Rf2
- 2.R2h3#
- 1...Rf3
- 2.Se2#
- 1...Rf4
- 2.R4h3#
- 1...Rf5
- 2.Sexf5#
- 1...Rf6
- 2.exf6#
- 1...Rf7
- 2.Qxg6#
- 1...Bf7
- 2.Sf1#
- 2.Sef5#
- 1...g5
- 2.Qxg5#
- 1...dxe6!
- 1...Rxg8
- 1.Be7?
- threat
- 2.Rg2#
- 1...Rf2
- 2.R2h3#
- 1...g5
- 2.Qxg5#
- 1...Rf6!
- threat
- 1.Qg7?
- 1...Rxf1
- 2.Sxf1#
- 1...Rf6
- 2.exf6#
- 1...Rf2
- 2.R2h3#
- 1...Rf3
- 2.Se2#
- 1...Rf4
- 2.R4h3#
- 1...Rf5
- 2.Sexf5#
- 1...Rf7
- 2.Qxg6#
- 1...Rg8
- 2.Sef5#
- 1...Rh8
- 2.Sef5#
- 1...Bf7
- 2.Sef5#
- 1...g5
- 2.Qxg5#
- 1...dxe6!
- 1...Rxf1
- 1.Qxf8?
- threat
- 2.Se2#
- 2.R2h3#
- 2.R4h3#
- 2.Qf2#
- 2.Qf3#
- 2.Qf4#
- 1...g5
- 2.Sef5#
- 2.Se2#
- 2.R2h3#
- 2.R4h3#
- 2.Qf2#
- 2.Qf3#
- 1...Bf7!
- threat
- 1.exd7?
- 1...Bf7+
- 2.e6#
- 1...Rxf1
- 2.Sxf1#
- 1...Rxg8
- 2.e6#
- 1...Rf6
- 2.exf6#
- 1...Rf2
- 2.R2h3#
- 1...Rf3
- 2.Se2#
- 1...Rf4
- 2.R4h3#
- 1...Rf5
- 2.Sexf5#
- 1...Rf7
- 2.Qxg6#
- 1...g5
- 2.Qxg5#
- 1...Bxd7!
- 1...Bf7+
- 1.Sdf5+?
- Keys
- 1.e7!
- 1...Bf7+
- 2.e6#
- 1...Rxf1
- 2.Sxf1#
- 1...Rxg8
- 2.e6#
- 1...Rf6
- 2.exf6#
- 1...Rf2
- 2.R2h3#
- 1...Rf3
- 2.Se2#
- 1...Rf4
- 2.R4h3#
- 1...Rf5
- 2.Sexf5#
- 1...Rf7
- 2.Qxg6#
- 1...g5
- 2.Qxg5#
- 1...Bf7+
- 1.e7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(f);XB(A)::S(D),XR(f)
- R(f);SBLOCK::R1(B)
- R(f);P_PINS(D),SBLOCK::S(E)
- R(f);SBLOCK::R1(F)
- R(f);N_GUARD::S(D),XR(f)
- R(f);OGATE::B(H)+P(G),XR(f)
- R(f);S_CUTB(e)::QAR(J),XP(c)
- B(e);P_PINP(I),S_CUTR(f)::S(D)
- P(c);OGATE::QAR2(J),XP(c)
- Tries
- Try
- S(E);CHECK
- Vars
- K(a);N_SPINP(c),P-FLIGHT::B(A)
- Refutation
- R(f);XS(E)
- Try
- B(A);
- Vars
- R(f);N_GUARD,N_SPINP(c),XQ(J)::S(D)
- R(f);N_GUARD::S(D),XR(f)
- R(f);SBLOCK::R1(B)
- R(f);SBLOCK::S(E)
- R(f);SBLOCK::R1(F)
- R(f);OGATE::B(H)+P(G),XR(f)
- R(f);S_CUTB(e)::QAR(J),XP(c)
- P(c);OGATE::QAR2(J),XP(c)
- Refutation
- P(d);XP(I)
- Try
- B(A);
- Vars
- R(f);N_GUARD,N_SPINP(c),XQ(J)::S(D)
- R(f);N_GUARD::S(D),XR(f)
- R(f);SBLOCK::R1(B)
- R(f);P_PINS(D),SBLOCK::S(E)
- R(f);SBLOCK::R1(F)
- R(f);OGATE::B(H)+P(G),XR(f)
- R(f);S_CUTB(e)::QAR(J),XP(c)
- P(c);OGATE::QAR2(J),XP(c)
- Refutation
- P(d);XP(I)
- Try
- B(A);
- Vars
- R(f);N_GUARD,N_SPINP(c),XQ(J)::S(D)
- R(f);N_GUARD::S(D),XR(f)
- R(f);SBLOCK::R1(B)
- R(f);P_PINS(D),SBLOCK::S(E)
- R(f);SBLOCK::R1(F)
- R(f);OGATE::B(H)+P(G),XR(f)
- R(f);S_CUTB(e)::QAR(J),XP(c)
- P(c);OGATE::QAR2(J),XP(c)
- Refutation
- P(d);XP(I)
- Try
- B(A);
- Vars
- R(f);N_GUARD,N_SPINP(c),XQ(J)::S(D)
- R(f);N_GUARD::S(D),XR(f)
- R(f);SBLOCK::R1(B)
- R(f);P_PINS(D),SBLOCK::S(E)
- R(f);SBLOCK::R1(F)
- R(f);OGATE::B(H)+P(G),XR(f)
- R(f);S_CUTB(e)::QAR(J),XP(c)
- P(c);OGATE::QAR2(J),XP(c)
- Refutation
- P(d);XP(I)
- Try
- B(H);
- Threat
- R1(B)
- Vars
- R(f);SBLOCK::R1(B)
- P(c);OGATE::QAR2(J),XP(c)
- Refutation
- R(f);
- Try
- Q(J);
- Vars
- R(f);XB(A)::S(D),XR(f)
- R(f);OGATE::B(H)+P(G),XR(f)
- R(f);SBLOCK::R1(B)
- R(f);P_PINS(D),SBLOCK::S(E)
- R(f);SBLOCK::R1(F)
- R(f);N_GUARD::S(D),XR(f)
- R(f);S_CUTB(e)::QAR(J),XP(c)
- R(f);N_GUARD::S(D)
- B(e);P_PINP(I),S_CUTR(f)::S(D)
- P(c);OGATE::QAR2(J),XP(c)
- Refutation
- P(d);XP(I)
- Try
- Q(J);N_PINP(c),XR(f)
- Threat
- DUALS(6)
- Refutation
- B(e);P_PINP(I)
- Try
- P(I);XP(d)
- Vars
- B(e);CHECK,S_CUTR(f)::B(H)+P(G)
- R(f);XB(A)::S(D),XR(f)
- R(f);N_GUARD,N_SPINP(c),XQ(J)::B(H)+P(G)
- R(f);OGATE::B(H)+P(G),XR(f)
- R(f);SBLOCK::R1(B)
- R(f);P_PINS(D),SBLOCK::S(E)
- R(f);SBLOCK::R1(F)
- R(f);N_GUARD::S(D),XR(f)
- R(f);S_CUTB(e)::QAR(J),XP(c)
- P(c);OGATE::QAR2(J),XP(c)
- Refutation
- B(e);XP(I)
- Try
- Actual
- P(I);
- Vars
- B(e);CHECK,S_CUTR(f)::B(H)+P(G)
- R(f);XB(A)::S(D),XR(f)
- R(f);N_GUARD,N_SPINP(c),XQ(J)::B(H)+P(G)
- R(f);OGATE::B(H)+P(G),XR(f)
- R(f);SBLOCK::R1(B)
- R(f);P_PINS(D),SBLOCK::S(E)
- R(f);SBLOCK::R1(F)
- R(f);N_GUARD::S(D),XR(f)
- R(f);S_CUTB(e)::QAR(J),XP(c)
- P(c);OGATE::QAR2(J),XP(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).