MESON Chess Problem Database
Problem Display
PID: 101348 (2RR2K1/8/8/8/3nB2Q/8/3p4/2NkN3 w - - 0 1)
Hartong, Jan
Good Companions, 1919
#2
7 + 3
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sb3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sb5
- 2.Bf3#
- 1...Sf5
- 2.Bf3#
- 1...Se6
- 2.Bf3#
- 1...dxe1R
- 2.Rxd4#
- 1...Sb3
- Tries
- 1.Scd3?
- 1...dxe1Q
- 2.Qxe1#
- 1...dxe1S
- 2.Qxe1#
- 1...dxe1B
- 2.Qxe1#
- 1...dxe1R
- 2.Qxe1#
- 1...Sc2
- 2.Bf3#
- 2.Qg4#
- 2.Qh5#
- 1...Se2
- 2.Sb2#
- 1...Sb3
- 2.Bf3#
- 2.Qg4#
- 2.Qh5#
- 1...Sf3
- 2.Bxf3#
- 1...Sb5
- 2.Bf3#
- 2.Qg4#
- 2.Qh5#
- 1...Sf5
- 2.Bf3#
- 2.Qg4#
- 2.Qh5#
- 1...Sc6
- 2.Bf3#
- 2.Qg4#
- 2.Qh5#
- 1...Se6
- 2.Bf3#
- 2.Qg4#
- 2.Qh5#
- 1...Ke2!
- 1...dxe1Q
- 1.Sg2?
- threat
- 2.Se3#
- 2.Qh1#
- 1...dxc1Q
- 2.Qe1#
- 1...dxc1S
- 2.Qe1#
- 1...dxc1B
- 2.Qe1#
- 1...dxc1R
- 2.Qe1#
- 1...Sc6
- 2.Qe1#
- 2.Qh1#
- 1...Se2
- 2.Se3#
- 2.Qe1#
- 1...Sf3
- 2.Se3#
- 2.Bxf3#
- 1...Sf5
- 2.Bf3#
- 2.Qe1#
- 2.Qh1#
- 2.Qg4#
- 2.Qh5#
- 1...Sc2!
- threat
- 1.Sed3?
- threat
- 2.Sb2#
- 2.Qh1#
- 1...dxc1Q
- 2.Qe1#
- 1...dxc1S
- 2.Qe1#
- 1...dxc1B
- 2.Qe1#
- 1...dxc1R
- 2.Qe1#
- 1...Sc2
- 2.Bf3#
- 2.Qg4#
- 2.Qh5#
- 1...Se2
- 2.Sb2#
- 1...Sf3
- 2.Sb2#
- 2.Bxf3#
- 1...Sc6!
- threat
- 1.Sf3?
- threat
- 2.Qh1#
- 1...Sxf3
- 2.Bxf3#
- 1...dxc1Q
- 2.Qe1#
- 1...dxc1S
- 2.Qe1#
- 1...dxc1B
- 2.Qe1#
- 1...dxc1R
- 2.Qe1#
- 1...Se2
- 2.Rxd2#
- 2.Qe1#
- 1...Sc2!
- threat
- 1.Bc2+?
- 1...Kxc1
- 2.Sd3#
- 1...Sxc2!
- 1...Kxc1
- 1.Bf3+?
- 1...Se2
- 2.Bxe2#
- 1...Sxf3!
- 1...Se2
- 1.Qg4+?
- 1...Kxe1
- 2.Qg1#
- 1...Se2
- 2.Qxe2#
- 1...Sf3!
- 1...Kxe1
- 1.Scd3?
- Keys
- 1.Qf2!
- 1...dxc1Q
- 2.Bf3#
- 1...dxc1S
- 2.Bc2#
- 1...dxc1B
- 2.Bc2#
- 2.Bf3#
- 1...dxc1R
- 2.Bf3#
- 2.Rxd4#
- 1...dxe1Q
- 2.Qc2#
- 1...dxe1S
- 2.Qe2#
- 1...dxe1B
- 2.Bf3#
- 2.Qc2#
- 2.Qe2#
- 1...dxe1R
- 2.Rxd4#
- 2.Qxd4#
- 2.Qc2#
- 1...Sc2
- 2.Qxd2#
- 1...Sc6
- 2.Qxd2#
- 1...Se2
- 2.Qxe2#
- 1...Sb3
- 2.Bf3#
- 2.Qe2#
- 1...Sf3
- 2.Bxf3#
- 2.Qe2#
- 1...Sb5
- 2.Bf3#
- 2.Rxd2#
- 2.Qxd2#
- 2.Qe2#
- 1...Sf5
- 2.Bf3#
- 2.Rxd2#
- 2.Qxd2#
- 2.Qe2#
- 1...Se6
- 2.Bf3#
- 2.Rxd2#
- 2.Qxd2#
- 2.Qe2#
- 1...dxc1Q
- 1.Qf2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 6
- Sets
- S(c);N_GUARD,P_SPINP(b)::B(C)
- S(c);N_GUARD,P_SPINP(b)::B(C),XS(c)
- P(b);OGATEB,P_SPINS(c),XS(B)::R(F),XS(c)
- Tries
- Try
- S(A);
- Vars
- P(b);OGATE,XS(B)::QAR1(D),XQ(b)
- P(b);OGATE,XS(B)::QAR1(D),XS(b)
- P(b);OGATE,XS(B)::QAR1(D),XB(b)
- P(b);OGATE,XS(B)::QAR1(D),XR(b)
- S(c);SBLOCK::S(A)
- S(c);N_GUARD::B(C),XS(c)
- Refutation
- K(a);S_FLIGHT
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- P(b);N_GUARD,P_SPINS(c),XS(A)::QAR1(D)
- Refutation
- S(c);P_SPINP(b)
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- P(b);N_GUARD,XS(A)::QAR1(D)
- S(c);::S(B)
- Refutation
- S(c);
- Try
- S(B);
- Threat
- QAR(D)
- Vars
- S(c);OGATE,P_SPINP(b),XS(B)::B(C),XS(c)
- P(b);N_GUARD,P_SPINS(c),XS(A)::QAR1(D)
- Refutation
- S(c);P_SPINP(b)
- Try
- B(C);CHECK
- Vars
- K(a);P-FLIGHT,XS(A)::S(B)
- Refutation
- S(c);P_SPINP(b),XB(C)
- Try
- B(C);CHECK
- Vars
- S(c);N_GUARD,P_SPINP(b),P_SPINS(c)::B(C),XS(c)
- Refutation
- S(c);P_SPINP(b),XB(C)
- Try
- Q(D);CHECK
- Vars
- K(a);OGATEB,P-FLIGHT,XS(B)::QAR2(D)
- S(c);N_GUARD,P_SPINP(b),P_SPINS(c)::QAB1(D),XS(c)
- Refutation
- S(c);P_SPINP(b),P_SPINS(c)
- Try
- Actual
- Q(D);
- Vars
- P(b);P_SPINS(c),XS(A)::B(C)
- P(b);P_SPINS(c),SBLOCK,XS(A)::B(C)
- P(b);OGATE,P_SPINS(c),SBLOCK,XS(B)::QAB1(D)
- P(b);P_SPINS(c),XS(B)::QAB1(D)
- S(c);P_SPINP(b)::QAR1(D),XP(b)
- S(c);N_GUARD,P_SPINP(b)::QAB1(D),XS(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).