MESON Chess Problem Database
Problem Display
PID: 229688 (8/1R3n2/K1pBkrNq/pR3nP1/r7/1N6/8/3Q2bB w - - 0 1)
Myllyniemi, Matti Arvo
Deutsche Schachzeitung, 1957
#2
9 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxg5
- 2.Sf8#
- 1...Qf8
- 2.Sxf8#
- 1...Qxh1
- 2.Sf8#
- 1...Qh2
- 2.Sf8#
- 1...Qh3
- 2.Sf8#
- 1...Qh4
- 2.Sf8#
- 1...Qh5
- 2.Sf8#
- 1...Qh7
- 2.Sf8#
- 1...Ra1
- 2.Sf4#
- 1...Ra2
- 2.Sf4#
- 1...Ra3
- 2.Sf4#
- 1...Rf4
- 2.Sxf4#
- 1...Bh2
- 2.Sc5#
- 1...Bc5
- 2.Sxc5#
- 1...Se3
- 2.Re7#
- 1...Sg3
- 2.Re7#
- 1...Sh4
- 2.Re7#
- 1...S5xd6
- 2.Re7#
- 1...Se7
- 2.Rxe7#
- 1...Sg7
- 2.Sf8#
- 2.Re7#
- 1...Se5
- 2.Rxe5#
- 1...Sxg5
- 2.Re5#
- 1...S7xd6
- 2.Re5#
- 1...Sd8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...cxb5
- 2.Qd5#
- 1...c5
- 2.Qd5#
- 1...Qxg5
- Tries
- 1.Bd5+?
- 1...cxd5
- 2.Qxd5#
- 1...Kxd6!
- 1...cxd5
- 1.Bh2?
- threat
- 2.Qd7#
- 1...Rd4
- 2.Sc5#
- 1...Sd4
- 2.Re7#
- 1...S5d6
- 2.Re7#
- 1...Se5
- 2.Rxe5#
- 1...S7d6
- 2.Re5#
- 1...Bd4!
- threat
- 1.Ba3?
- threat
- 2.Qd7#
- 1...Bd4
- 2.Sf4#
- 1...Sd4
- 2.Re7#
- 1...S5d6
- 2.Re7#
- 1...Se5
- 2.Rxe5#
- 1...S7d6
- 2.Re5#
- 1...Rd4!
- threat
- 1.Bg3?
- threat
- 2.Qd7#
- 1...Rd4
- 2.Sc5#
- 1...Sd4
- 2.Re7#
- 1...S5d6
- 2.Re7#
- 1...Se5
- 2.Rxe5#
- 1...S7d6
- 2.Re5#
- 1...Bd4!
- threat
- 1.Bb4?
- threat
- 2.Sf4#
- 2.Qd7#
- 1...Qxg5
- 2.Sf8#
- 2.Qd7#
- 1...Qxg6
- 2.Qd7#
- 1...Rxb4
- 2.Qd7#
- 1...Rxg6
- 2.Qd7#
- 1...cxb5
- 2.Bd5#
- 2.Qd5#
- 2.Qd7#
- 1...Bd4
- 2.Sf4#
- 1...Qh2
- 2.Sf8#
- 2.Qd7#
- 1...Qh4
- 2.Sf8#
- 2.Qd7#
- 1...Bh2
- 2.Sc5#
- 2.Qd7#
- 1...Be3
- 2.Qd7#
- 1...Bc5
- 2.Sxc5#
- 2.Qd7#
- 1...Se3
- 2.Sd4#
- 2.Re7#
- 2.Qd7#
- 1...Sg3
- 2.Re7#
- 2.Qd7#
- 1...Sd4
- 2.Re7#
- 1...Sh4
- 2.Re7#
- 2.Qd7#
- 1...S5d6
- 2.Re7#
- 1...Se7
- 2.Rxe7#
- 2.Qd7#
- 1...Sg7
- 2.Sf8#
- 2.Re7#
- 2.Qd7#
- 1...Se5
- 2.Sf4#
- 2.Rxe5#
- 1...S7d6
- 2.Sf4#
- 2.Re5#
- 1...c5
- 2.Qd5#
- 2.Qd7#
- 1...axb4+!
- threat
- 1.Bf4?
- threat
- 2.Qd7#
- 1...Rd4
- 2.Sc5#
- 1...Sd4
- 2.Re7#
- 1...S5d6
- 2.Re7#
- 1...Se5
- 2.Rxe5#
- 1...S7d6
- 2.Re5#
- 1...Bd4!
- threat
- 1.Bf8?
- threat
- 2.Qd7#
- 1...Bd4
- 2.Sf4#
- 1...Rd4
- 2.Sc5#
- 1...S5d6
- 2.Re7#
- 1...Se5
- 2.Rxe5#
- 1...S7d6
- 2.Re5#
- 1...Sd4!
- threat
- 1.Bd5+?
- Keys
- 1.Bb8!
- threat
- 2.Qd7#
- 1...Bd4
- 2.Sf4#
- 1...Rd4
- 2.Sc5#
- 1...Sd4
- 2.Re7#
- 1...S5d6
- 2.Re7#
- 1...Se5
- 2.Rxe5#
- 1...S7d6
- 2.Re5#
- threat
- 1.Bb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 23
- Sets
- Q(h);N_GUARD,XP(E)::S(H)
- Q(h);N_GUARD::S(H),XQ(h)
- Q(h);N_GUARD,XB(B)::S(H)
- Q(h);N_GUARD::S(H)
- R(b);N_GUARD::S(H)
- R(b);N_GUARD::S(H),XR(b)
- B(a);N_GUARD::S(C)
- B(a);N_GUARD::S(C),XB(a)
- S(d);N_GUARD::R1(I)
- S(d);N_GUARD,XB(G)::R1(I)
- S(d);N_GUARD::R1(I),XS(d)
- S(i);N_GUARD::R1(D),XS(i)
- S(i);N_GUARD,XP(E)::R1(D)
- S(i);N_GUARD,XB(G)::R1(D)
- S(i);N_GUARD::R1(D)
- P(e);N_GUARD,XR(D)::QAB1(A)
- P(e);N_GUARD::QAB1(A)
- Tries
- Try
- B(B);CHECK
- Vars
- P(e);OGATE,XB(B)::QAB1(A),XP(e)
- Refutation
- K(f);P-FLIGHT,XB(G)
- Try
- B(G);
- Threat
- QAB1(A)
- Vars
- R(b);S_CUTB(a)::S(C)
- S(d);N_GUARD::R1(I)
- S(i);N_GUARD::R1(D),XS(i)
- S(i);N_GUARD::R1(D)
- Refutation
- B(a);
- Try
- B(G);
- Threat
- QAB1(A)
- Vars
- B(a);S_CUTR(b)::S(H)
- S(d);N_GUARD::R1(I)
- S(i);N_GUARD::R1(D),XS(i)
- S(i);N_GUARD::R1(D)
- Refutation
- R(b);
- Try
- B(G);
- Threat
- QAB1(A)
- Vars
- R(b);S_CUTB(a)::S(C)
- S(d);N_GUARD::R1(I)
- S(i);N_GUARD::R1(D),XS(i)
- S(i);N_GUARD::R1(D)
- Refutation
- B(a);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(h);XS(H)::QAB1(A)
- R(b);XB(G)::QAB1(A)
- R(g);XS(H)::QAB1(A)
- B(a);::S(H)
- B(a);::QAB1(A)
- S(d);N_GUARD::R1(I)
- Refutation
- P(c);CHECK,XB(G)
- Try
- B(G);
- Threat
- QAB1(A)
- Vars
- R(b);S_CUTB(a)::S(C)
- S(d);N_GUARD::R1(I)
- S(i);N_GUARD::R1(D),XS(i)
- S(i);N_GUARD::R1(D)
- Refutation
- B(a);
- Try
- B(G);
- Threat
- QAB1(A)
- Vars
- B(a);S_CUTR(b)::S(H)
- R(b);S_CUTB(a)::S(C)
- S(d);N_GUARD::R1(I)
- S(i);N_GUARD::R1(D),XS(i)
- S(i);N_GUARD::R1(D)
- Refutation
- S(d);
- Try
- Actual
- B(G);
- Threat
- QAB1(A)
- Vars
- B(a);S_CUTR(b)::S(H)
- R(b);S_CUTB(a)::S(C)
- S(d);N_GUARD::R1(I)
- S(i);N_GUARD::R1(D),XS(i)
- S(i);N_GUARD::R1(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).