MESON Chess Problem Database
Problem Display
PID: 22116 (3n4/2N5/5RKn/4k3/P2p4/1PpPb1P1/5NP1/4Q3 w - - 0 1)
Strange-Petersen, Orla Schartau
Nationaltidende, 1924
#2
10 + 6
| 3098 | FIDE Album (1914-1944) (I) | 1971 |
| 15422 | Problemskak | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Sg4
- 2.Sxg4#
- 1...Sf5
- 2.Sg4#
- 1...Shf7
- 2.Sg4#
- 1...Sg8
- 2.Sg4#
- 1...Sc6
- 2.Re6#
- 1...Se6
- 2.Rxe6#
- 1...Sb7
- 2.Re6#
- 1...Sdf7
- 2.Re6#
- 1...c2
- 2.Qa5#
- 1...Sg4
- Tries
- 1.Ra6?
- 1...Sg4
- 2.Sxg4#
- 1...Sf5
- 2.Sg4#
- 1...Shf7
- 2.Sg4#
- 1...Sg8
- 2.Sg4#
- 1...Se6
- 2.Rxe6#
- 1...Sb7
- 2.Re6#
- 1...Sdf7
- 2.Re6#
- 1...c2
- 2.Qa5#
- 1...Sc6!
- 1...Sg4
- 1.Rb6?
- 1...Sg4
- 2.Sxg4#
- 1...Sf5
- 2.Sg4#
- 1...Shf7
- 2.Sg4#
- 1...Sg8
- 2.Sg4#
- 1...Se6
- 2.Rxe6#
- 1...Sb7
- 2.Re6#
- 1...Sdf7
- 2.Re6#
- 1...c2
- 2.Qa5#
- 1...Sc6!
- 1...Sg4
- 1.Rc6?
- 1...Sg4
- 2.Sxg4#
- 1...Sf5
- 2.Sg4#
- 1...Shf7
- 2.Sg4#
- 1...Sg8
- 2.Sg4#
- 1...Se6
- 2.Rxe6#
- 1...Sb7
- 2.Re6#
- 1...Sdf7
- 2.Re6#
- 1...c2
- 2.Qa5#
- 1...Sxc6!
- 1...Sg4
- 1.Qxc3?
- threat
- 2.Qa5#
- 2.Qc5#
- 1...Se6
- 2.Rxe6#
- 1...Bd2
- 2.Qc5#
- 1...Sc6
- 2.Re6#
- 2.Qc5#
- 1...Sb7
- 2.Re6#
- 1...dxc3!
- threat
- 1.Qe2?
- 1...Se6
- 2.Rxe6#
- 1...Sg4
- 2.Sxg4#
- 1...Sf5
- 2.Sg4#
- 1...Shf7
- 2.Sg4#
- 1...Sg8
- 2.Sg4#
- 1...Sc6
- 2.Re6#
- 1...Sb7
- 2.Re6#
- 1...Sdf7
- 2.Re6#
- 1...c2!
- 1...Se6
- 1.b4?
- 1...Se6
- 2.Rxe6#
- 1...Sg4
- 2.Sxg4#
- 1...Sf5
- 2.Sg4#
- 1...Shf7
- 2.Sg4#
- 1...Sg8
- 2.Sg4#
- 1...Sc6
- 2.Re6#
- 1...Sb7
- 2.Re6#
- 1...Sdf7
- 2.Re6#
- 1...c2!
- 1...Se6
- 1.a5?
- 1...Se6
- 2.Rxe6#
- 1...Sg4
- 2.Sxg4#
- 1...Sf5
- 2.Sg4#
- 1...Shf7
- 2.Sg4#
- 1...Sg8
- 2.Sg4#
- 1...Sc6
- 2.Re6#
- 1...Sb7
- 2.Re6#
- 1...Sdf7
- 2.Re6#
- 1...c2!
- 1...Se6
- 1.Ra6?
- Keys
- 1.Se4!
- 1...Sg4
- 2.Rf5#
- 1...Bc1
- 2.Sd2#
- 1...Bg1
- 2.Sf2#
- 1...Bd2
- 2.Sxd2#
- 1...Bf2
- 2.Sxf2#
- 1...Bf4
- 2.gxf4#
- 1...Bg5
- 2.Sxg5#
- 1...Sf5
- 2.Rxf5#
- 1...Shf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...Sc6
- 2.Re6#
- 1...Se6
- 2.Rxe6#
- 1...Sb7
- 2.Re6#
- 1...Sdf7
- 2.Re6#
- 1...c2
- 2.Qa5#
- 1...Sg4
- 1.Se4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- S(e);N_GUARD::S(B),XS(e)
- S(e);N_GUARD::S(B)
- S(f);N_GUARD::R1(H)
- S(f);N_GUARD::R1(H),XS(f)
- P(a);OGATE::QAR(A)
- Tries
- Try
- R(H);
- Vars
- S(e);N_GUARD::S(B),XS(e)
- S(e);N_GUARD::S(B)
- S(f);N_GUARD::R1(H),XS(f)
- S(f);N_GUARD::R1(H)
- P(a);OGATE::QAR(A)
- Refutation
- S(f);
- Try
- R(H);
- Vars
- S(e);N_GUARD::S(B),XS(e)
- S(e);N_GUARD::S(B)
- S(f);N_GUARD::R1(H),XS(f)
- S(f);N_GUARD::R1(H)
- P(a);OGATE::QAR(A)
- Refutation
- S(f);
- Try
- R(H);
- Vars
- S(e);N_GUARD::S(B),XS(e)
- S(e);N_GUARD::S(B)
- S(f);N_GUARD::R1(H),XS(f)
- S(f);N_GUARD::R1(H)
- P(a);OGATE::QAR(A)
- Refutation
- S(f);XR(H)
- Try
- Q(A);N_PINB(b),P_PINP(c),XP(a)
- Threat
- DUALS(2)
- Vars
- S(f);N_GUARD::R1(H),XS(f)
- B(b);::QAR2(A)
- S(f);N_GUARD::R1(H)
- Refutation
- P(c);N_SPINP(c),XQ(A)
- Try
- Q(A);
- Vars
- S(f);N_GUARD::R1(H),XS(f)
- S(e);N_GUARD::S(B),XS(e)
- S(e);N_GUARD::S(B)
- S(f);N_GUARD::R1(H)
- Refutation
- P(a);
- Try
- P(D);
- Vars
- S(f);N_GUARD::R1(H),XS(f)
- S(e);N_GUARD::S(B),XS(e)
- S(e);N_GUARD::S(B)
- S(f);N_GUARD::R1(H)
- Refutation
- P(a);
- Try
- P(G);
- Vars
- S(f);N_GUARD::R1(H),XS(f)
- S(e);N_GUARD::S(B),XS(e)
- S(e);N_GUARD::S(B)
- S(f);N_GUARD::R1(H)
- Refutation
- P(a);
- Try
- Actual
- S(B);N_PINB(b)
- Vars
- S(e);N_GUARD::R1(H)
- B(b);::QAR(A)+S(B)
- B(b);::QAR(A)+S(B),XB(b)
- B(b);OGATE::P(F),XB(b)
- S(e);N_GUARD::R1(H),XS(e)
- S(f);N_GUARD::R1(H)
- S(f);N_GUARD::R1(H),XS(f)
- P(a);OGATE::QAR(A)
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).