MESON Chess Problem Database
Problem Display
PID: 202456 (8/5p2/1pNp1Q2/1P1PpP2/1PB1pR2/1Kn1k1P1/2P2N1n/4B3 w - - 0 1)
Kovacs, Florian Janos
Sydsvenska Dagbladet Snallposten, 1923
#2
13 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sf1
- 2.Sg4#
- 1...Sf3
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- 1...Sb1
- 2.Sd1#
- 1...Sd1
- 2.Sxd1#
- 1...Sa2
- 2.Sd1#
- 1...Se2
- 2.Sd1#
- 1...Sa4
- 2.Sd1#
- 1...Sxb5
- 2.Sd1#
- 1...Sxd5
- 2.Sd1#
- 1...exf4
- 2.Qxc3#
- 1...Sf1
- Tries
- 1.Kb2?
- 1...Sd1+
- 2.Sxd1#
- 1...Sxb5
- 2.Sd1#
- 1...Sxd5
- 2.Sd1#
- 1...exf4
- 2.Qxc3#
- 1...Sf1
- 2.Sg4#
- 1...Sf3
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- 1...Sb1
- 2.Sd1#
- 1...Sa2
- 2.Sd1#
- 1...Se2
- 2.Sd1#
- 1...Sa4+!
- 1...Sd1+
- 1.Kxc3?
- threat
- 2.Sd1#
- 2.Bd2#
- 1...Sf1
- 2.Sd1#
- 2.Sg4#
- 1...Sf3
- 2.Sd1#
- 2.Sg4#
- 2.Rxe4#
- 1...exf4!
- threat
- 1.Bf1?
- 1...Sxb5
- 2.Sd1#
- 1...Sxd5
- 2.Sd1#
- 1...exf4
- 2.Qxc3#
- 1...Sf3
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- 1...Sb1
- 2.Sd1#
- 1...Sd1
- 2.Sxd1#
- 1...Sa2
- 2.Sd1#
- 1...Se2
- 2.Sd1#
- 1...Sa4
- 2.Sd1#
- 1...Sxf1!
- 1...Sxb5
- 1.Rf3+?
- 1...Sxf3
- 2.Sg4#
- 1...exf3
- 2.Qg5#
- 2.Qh6#
- 1...Kxf3!
- 1...Sxf3
- 1.Qh4?
- 1...Sxb5
- 2.Sd1#
- 1...Sxd5
- 2.Sd1#
- 1...exf4
- 2.Qxf4#
- 1...Sf1
- 2.Sg4#
- 1...Sf3
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- 1...Sb1
- 2.Sd1#
- 1...Sd1
- 2.Sxd1#
- 1...Sa2
- 2.Sd1#
- 1...Se2
- 2.Sd1#
- 1...Sa4
- 2.Sd1#
- 1...f6!
- 1...Sxb5
- 1.Qxe5?
- threat
- 2.Qxc3#
- 2.Qd4#
- 1...Sxb5
- 2.Sd1#
- 2.Qxe4#
- 1...Sxd5
- 2.Sd1#
- 2.Qd4#
- 2.Qxe4#
- 1...Sf3
- 2.Sg4#
- 2.Qxc3#
- 1...Sb1
- 2.Sd1#
- 2.Qd4#
- 2.Qxe4#
- 1...Sd1
- 2.Sxd1#
- 2.Qd4#
- 2.Qxe4#
- 1...Sa2
- 2.Sd1#
- 2.Qd4#
- 2.Qxe4#
- 1...Se2
- 2.Sd1#
- 2.Qxe4#
- 1...Sa4
- 2.Sd1#
- 2.Qd4#
- 2.Qxe4#
- 1...dxe5!
- threat
- 1.Qg5?
- 1...Sxb5
- 2.Sd1#
- 1...Sxd5
- 2.Sd1#
- 1...exf4
- 2.Qxf4#
- 1...Sf1
- 2.Sg4#
- 1...Sf3
- 2.Sg4#
- 2.Rxe4#
- 1...Sg4
- 2.Sxg4#
- 1...Sb1
- 2.Sd1#
- 1...Sd1
- 2.Sxd1#
- 1...Sa2
- 2.Sd1#
- 1...Se2
- 2.Sd1#
- 1...Sa4
- 2.Sd1#
- 1...f6!
- 1...Sxb5
- 1.Qg7?
- 1...Sxb5
- 2.Sd1#
- 1...Sxd5
- 2.Sd1#
- 1...exf4
- 2.Qxc3#
- 1...Sf1
- 2.Sg4#
- 1...Sf3
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- 1...Sb1
- 2.Sd1#
- 1...Sd1
- 2.Sxd1#
- 1...Sa2
- 2.Sd1#
- 1...Se2
- 2.Sd1#
- 1...Sa4
- 2.Sd1#
- 1...f6!
- 1...Sxb5
- 1.Qd8?
- threat
- 2.Qxb6#
- 1...Sxb5
- 2.Sd1#
- 1...Sxd5
- 2.Sd1#
- 1...Sf3
- 2.Sg4#
- 1...Se2
- 2.Sd1#
- 1...Sa4
- 2.Sd1#
- 1...exf4!
- threat
- 1.Qh8?
- 1...Sxb5
- 2.Sd1#
- 1...Sxd5
- 2.Sd1#
- 1...exf4
- 2.Qxc3#
- 1...Sf1
- 2.Sg4#
- 1...Sf3
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- 1...Sb1
- 2.Sd1#
- 1...Sd1
- 2.Sxd1#
- 1...Sa2
- 2.Sd1#
- 1...Se2
- 2.Sd1#
- 1...Sa4
- 2.Sd1#
- 1...f6!
- 1...Sxb5
- 1.Qxd6?
- 1...Sxb5
- 2.Sd1#
- 1...Sxd5
- 2.Sd1#
- 1...exf4
- 2.Qxf4#
- 1...Sf1
- 2.Sg4#
- 1...Sf3
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- 1...Sb1
- 2.Sd1#
- 1...Sd1
- 2.Sxd1#
- 1...Sa2
- 2.Sd1#
- 1...Se2
- 2.Sd1#
- 1...Sa4
- 2.Sd1#
- 1...f6!
- 1...Sxb5
- 1.Qh6?
- 1...Sxb5
- 2.Sd1#
- 1...Sxd5
- 2.Sd1#
- 1...exf4
- 2.Qxf4#
- 1...Sf1
- 2.Sg4#
- 1...Sf3
- 2.Sg4#
- 2.Rxe4#
- 1...Sg4
- 2.Sxg4#
- 1...Sb1
- 2.Sd1#
- 1...Sd1
- 2.Sxd1#
- 1...Sa2
- 2.Sd1#
- 1...Se2
- 2.Sd1#
- 1...Sa4
- 2.Sd1#
- 1...f6!
- 1...Sxb5
- 1.Qxf7?
- 1...Sxb5
- 2.Sd1#
- 1...Sxd5
- 2.Sd1#
- 1...Sf1
- 2.Sg4#
- 1...Sf3
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- 1...Sb1
- 2.Sd1#
- 1...Sd1
- 2.Sxd1#
- 1...Sa2
- 2.Sd1#
- 1...Se2
- 2.Sd1#
- 1...Sa4
- 2.Sd1#
- 1...exf4!
- 1...Sxb5
- 1.Kb2?
- Keys
- 1.Sxe5!
- 1...Kd4
- 2.Seg4#
- 1...Sxb5
- 2.Rxe4#
- 1...Sxd5
- 2.Rxe4#
- 1...dxe5
- 2.Qxb6#
- 1...Sf1
- 2.Seg4#
- 1...Sf3
- 2.Seg4#
- 1...Sg4
- 2.Sexg4#
- 1...Sb1
- 2.Rxe4#
- 1...Sd1
- 2.Rxe4#
- 1...Sa2
- 2.Rxe4#
- 1...Se2
- 2.Rxe4#
- 1...Sa4
- 2.Rxe4#
- 1...Kd4
- 1.Sxe5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- S(b);N_GUARD,XP(I)::S(C)
- S(b);N_GUARD,XP(J)::S(C)
- P(e);OGATE,XR(H)::QAR2(M),XS(b)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- S(b);CHECK,N_GUARD::S(C),XS(b)
- S(b);N_GUARD,XP(I)::S(C)
- S(b);N_GUARD,XP(J)::S(C)
- P(e);OGATE,XR(H)::QAR2(M),XS(b)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(b);N_GUARD::S(C)
- Refutation
- S(b);CHECK
- Try
- K(D);P-FLIGHT,XS(b)
- Threat
- DUALS(2)
- Refutation
- P(e);XR(H)
- Try
- B(G);
- Vars
- S(b);N_GUARD,XP(I)::S(C)
- S(b);N_GUARD,XP(J)::S(C)
- P(e);OGATE,XR(H)::QAR2(M),XS(b)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- Refutation
- S(a);XB(G)
- Try
- R(H);CHECK
- Vars
- S(a);SBLOCK,XR(H)::S(C)
- Refutation
- K(c);P-FLIGHT,XR(H)
- Try
- Q(M);
- Vars
- S(b);N_GUARD,XP(I)::S(C)
- S(b);N_GUARD,XP(J)::S(C)
- P(e);OGATE,XR(H)::QAB1(M),XP(e)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- Refutation
- P(h);
- Try
- Q(M);P_PINP(d),XP(e)
- Threat
- DUALS(2)
- Refutation
- P(g);N_SPINP(d),XQ(M)
- Try
- Q(M);
- Vars
- S(b);N_GUARD,XP(I)::S(C)
- S(b);N_GUARD,XP(J)::S(C)
- P(e);OGATE,P_SPINP(e),XR(H)::QAB1(M),XP(e)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- Refutation
- P(h);
- Try
- Q(M);
- Vars
- S(b);N_GUARD,XP(I)::S(C)
- S(b);N_GUARD,XP(J)::S(C)
- P(e);OGATE,XR(H)::QAR2(M),XS(b)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- Refutation
- P(h);
- Try
- Q(M);
- Threat
- QAB(M),XP(f)
- Vars
- S(b);N_GUARD,XP(I)::S(C)
- S(b);N_GUARD,XP(J)::S(C)
- S(a);N_GUARD::S(C)
- S(b);N_GUARD::S(C)
- Refutation
- P(e);XR(H)
- Try
- Q(M);
- Vars
- S(b);N_GUARD,XP(I)::S(C)
- S(b);N_GUARD,XP(J)::S(C)
- P(e);OGATE,XR(H)::QAR2(M),XS(b)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- Refutation
- P(h);
- Try
- Q(M);XP(g)
- Vars
- S(b);N_GUARD,XP(I)::S(C)
- S(b);N_GUARD,XP(J)::S(C)
- P(e);OGATE,XR(H)::QAB1(M),XP(e)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- Refutation
- P(h);
- Try
- Q(M);
- Vars
- S(b);N_GUARD,XP(I)::S(C)
- S(b);N_GUARD,XP(J)::S(C)
- P(e);OGATE,P_SPINP(e),XR(H)::QAB1(M),XP(e)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- Refutation
- P(h);
- Try
- Q(M);XP(h)
- Vars
- S(b);N_GUARD,XP(I)::S(C)
- S(b);N_GUARD,XP(J)::S(C)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- Refutation
- P(e);XR(H)
- Try
- Actual
- S(L);XP(e)
- Vars
- K(c);P_SPINP(d),S_FLIGHT::QAB(M)+S(L)
- S(b);N_GUARD,XP(I)::R1(H),XP(d)
- S(b);N_GUARD,XP(J)::R1(H),XP(d)
- P(g);OGATE,XS(L)::QAB(M),XP(f)
- S(a);N_GUARD::S(L)
- S(a);N_GUARD::S(L),XS(a)
- S(b);N_GUARD::R1(H),XP(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).