MESON Chess Problem Database
Problem Display
PID: 213056 (6Qb/2nRp2B/3P4/3N4/1B1k1P2/1Pprp2b/KP3P2/3N1q2 w - - 0 1)
Heinonen, Erkki
Suomen Shakki, 1952
#2
12 + 9
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxd1
- 2.bxc3#
- 2.fxe3#
- 1...Rd2
- 2.fxe3#
- 1...Rxd1
- Tries
- 1.S5xc3?
- threat
- 2.Qc4#
- 1...Rxc3
- 2.bxc3#
- 1...Rd2
- 2.fxe3#
- 1...Be6
- 2.Qxh8#
- 1...Sd5
- 2.Sb5#
- 2.Qxd5#
- 1...Se6
- 2.dxe7#
- 1...e6
- 2.dxc7#
- 1...Rxd1!
- threat
- 1.S5xe3?
- threat
- 2.Sc2#
- 2.Qc4#
- 1...Qxd1
- 2.Qc4#
- 1...Qxf2
- 2.Qc4#
- 1...Rxd1
- 2.Sc2#
- 2.bxc3#
- 1...Rxe3
- 2.fxe3#
- 1...Bf5
- 2.Qc4#
- 1...Qe2
- 2.Qc4#
- 1...Be6
- 2.Qxh8#
- 1...Sd5
- 2.Sc2#
- 2.Qxd5#
- 1...Se6
- 2.dxe7#
- 1...c2
- 2.Sxc2#
- 2.Qc4#
- 1...e6
- 2.dxc7#
- 1...Rd2!
- threat
- 1.Sf6?
- threat
- 2.Qc4#
- 1...Rxd1
- 2.bxc3#
- 1...Rd2
- 2.fxe3#
- 1...Sd5
- 2.Qxd5#
- 1...Se6
- 2.dxe7#
- 1...e6
- 2.dxc7#
- 1...Be6!
- threat
- 1.Sxc7?
- threat
- 2.Sb5#
- 2.Qc4#
- 2.Qd5#
- 1...Rxd1
- 2.Qd5#
- 2.bxc3#
- 1...Bxd7
- 2.Qc4#
- 2.Qd5#
- 1...Bf5
- 2.Qc4#
- 2.Qd5#
- 1...Qg2
- 2.Sb5#
- 2.Qc4#
- 1...Qh1
- 2.Sb5#
- 2.Qc4#
- 1...Rd2
- 2.Qd5#
- 2.fxe3#
- 1...Bg2
- 2.Sb5#
- 2.Qc4#
- 1...Be6
- 2.Qxh8#
- 1...e6!
- threat
- 1.Sxe7?
- threat
- 2.Sc6#
- 2.Qc4#
- 2.Qxh8#
- 1...Rxd1
- 2.Sc6#
- 2.Qxh8#
- 2.bxc3#
- 1...Bxd7
- 2.Qc4#
- 2.Qxh8#
- 1...Bf5
- 2.Qc4#
- 1...Qg2
- 2.Qc4#
- 1...Qg1
- 2.Sc6#
- 2.Qc4#
- 1...Qh1
- 2.Qc4#
- 2.Qxh8#
- 1...Rd2
- 2.Sc6#
- 2.Qxh8#
- 2.fxe3#
- 1...Bg2
- 2.Qc4#
- 2.Qxh8#
- 1...Be6
- 2.Qxh8#
- 1...Be5
- 2.Sc6#
- 2.Qc4#
- 1...Bf6
- 2.Sc6#
- 2.Qc4#
- 1...Bg7
- 2.Sc6#
- 2.Qc4#
- 2.Qxg7#
- 1...Sd5
- 2.Sc6#
- 2.Qxd5#
- 1...Se8
- 2.Sc6#
- 2.Qc4#
- 2.Qd5#
- 1...Se6!
- threat
- 1.Qxh8+?
- 1...e5
- 2.Qxe5#
- 1...Kxd5!
- 1...e5
- 1.S5xc3?
- Keys
- 1.Sb6!
- threat
- 2.Qc4#
- 1...Rxd1
- 2.bxc3#
- 1...Rd2
- 2.fxe3#
- 1...Be6
- 2.Qxh8#
- 1...Sd5
- 2.Qxd5#
- 1...Se6
- 2.dxe7#
- 1...e6
- 2.dxc7#
- threat
- 1.Sb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(c);N_GUARD,P_PINP(C)::P(D),XP(d)
- Tries
- Try
- S(H);XP(b)
- Threat
- QAR1(L)
- Vars
- R(c);OGATE,XS(H)::P(C),XR(c)
- R(c);N_GUARD,P_PINP(C)::P(D),XP(d)
- B(e);P_PINP(E),S_CUTP(h)::QAB(L),XB(i)
- S(g);N_GUARD,S_CUTB(e)::R(J)+P(I),XP(h)
- P(h);S_CUTB(e)::R(J)+P(I),XS(g)
- Refutation
- R(c);XS(A)
- Try
- S(H);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(a);XS(A)::QAR1(L)
- Q(a);P_PINP(C),XP(D)::QAR1(L)
- R(c);OGATE,XS(H)::P(D),XR(c)
- B(e);::QAR1(L)
- Q(a);P_PINP(C)::QAR1(L)
- B(e);P_PINP(E),S_CUTP(h)::QAB(L),XB(i)
- S(g);N_GUARD,S_CUTB(e)::R(J)+P(I),XP(h)
- P(h);S_CUTB(e)::R(J)+P(I),XS(g)
- Refutation
- R(c);P_PINP(C)
- Try
- S(H);
- Threat
- QAR1(L)
- Vars
- R(c);N_GUARD,XS(A)::P(C),XP(b)
- R(c);N_GUARD,P_PINP(C)::P(D),XP(d)
- S(g);N_GUARD::QAR1(L),XS(g)
- S(g);N_GUARD,S_CUTB(e)::R(J)+P(I),XP(h)
- P(h);S_CUTB(e)::R(J)+P(I),XS(g)
- Refutation
- B(e);P_PINP(E)
- Try
- S(H);XS(g)
- Threat
- DUALS(3)
- Vars
- B(e);P_PINP(E),S_CUTP(h)::QAB(L),XB(i)
- Refutation
- P(h);
- Try
- S(H);XP(h)
- Threat
- DUALS(3)
- Vars
- B(e);::QAR1(L)
- Q(a);::QAR1(L)
- B(e);P_PINP(E)::QAB(L),XB(i)
- Refutation
- S(g);
- Try
- Q(L);CHECK,XB(i)
- Vars
- P(h);P_SPINP(h)::QAB1(L),XP(h)
- Refutation
- K(f);P-FLIGHT,XS(H)
- Try
- Actual
- S(H);
- Threat
- QAR1(L)
- Vars
- R(c);N_GUARD,XS(A)::P(C),XP(b)
- R(c);N_GUARD,P_PINP(C)::P(D),XP(d)
- B(e);P_PINP(E),S_CUTP(h)::QAB(L),XB(i)
- S(g);N_GUARD::QAR1(L),XS(g)
- S(g);N_GUARD,S_CUTB(e)::R(J)+P(I),XP(h)
- P(h);S_CUTB(e)::R(J)+P(I),XS(g)
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).