MESON Chess Problem Database
Problem Display
PID: 185284 (KR4B1/1Nr1P1p1/3B1Qn1/1p1P4/2k5/P2p4/Pr6/qN2b3 w - - 0 1)
Myllyniemi, Matti Arvo
Suomen Shakki, 1981
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Rd2
- 2.Sa5#
- 1...Rb4
- 2.Sa5#
- 1...Rc6
- 2.dxc6#
- 1...Rc8
- 2.Rxc8#
- 1...Bf2
- 2.Sa5#
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Bg3
- 2.Sa5#
- 2.Qc3#
- 1...Bh4
- 2.Sa5#
- 2.Qc3#
- 1...Ba5
- 2.Sxa5#
- 1...Sf4
- 2.Qxf4#
- 1...Sh4
- 2.Qf4#
- 1...Se5
- 2.Qf4#
- 1...Sxe7
- 2.Qf4#
- 1...Sf8
- 2.Qf4#
- 1...Sh8
- 2.Qf4#
- 1...d2
- 2.Qc3#
- 1...b4
- 2.Sa5#
- 1...Rd2
- Tries
- 1.Sd2+?
- 1...Rxd2
- 2.Sa5#
- 1...Bxd2!
- 1...Rxd2
- 1.Bb4?
- threat
- 2.Sa5#
- 2.Sd6#
- 2.d6#
- 1...Qxa2
- 2.Sa5#
- 2.d6#
- 1...Rxa2
- 2.Sa5#
- 2.d6#
- 1...Rxb4
- 2.d6#
- 1...Rxb7
- 2.d6#
- 1...Rxe7
- 2.Sa5#
- 2.Sd6#
- 1...Bxb4
- 2.d6#
- 1...Sxe7
- 2.Sa5#
- 2.Sd6#
- 2.Qf4#
- 1...Se5
- 2.Qf4#
- 1...d2
- 2.Qc3#
- 1...Re2
- 2.Sa5#
- 2.Sd6#
- 1...Rc5
- 2.Sa5#
- 2.Sd6#
- 1...Rc6
- 2.Sa5#
- 2.dxc6#
- 2.d6#
- 1...Rd7
- 2.Sa5#
- 2.d6#
- 1...Rc8
- 2.Sa5#
- 2.Sd6#
- 2.Rxc8#
- 1...Bg3
- 2.Sa5#
- 2.Qc3#
- 2.d6#
- 1...Sf4
- 2.Sa5#
- 2.Sd6#
- 2.Qxf4#
- 1...Sf8
- 2.Sa5#
- 2.Sd6#
- 2.Qf4#
- 1...Sh8
- 2.Sa5#
- 2.Sd6#
- 2.Qf4#
- 1...gxf6!
- threat
- 1.Bc5?
- threat
- 2.Qd4#
- 2.d6#
- 1...Qxa2
- 2.d6#
- 1...Rxb1
- 2.d6#
- 1...Rxa2
- 2.d6#
- 1...Rxc5
- 2.Sd6#
- 1...Rxb7
- 2.Qd4#
- 1...Rxe7
- 2.Qd4#
- 1...Sxe7
- 2.Qd4#
- 2.Qf4#
- 1...gxf6
- 2.d6#
- 1...d2
- 2.Qc3#
- 2.Qd4#
- 2.Qf1#
- 1...b4
- 2.Qa6#
- 1...Rc2
- 2.d6#
- 1...Rd2
- 2.d6#
- 1...Rf2
- 2.d6#
- 1...Rg2
- 2.d6#
- 1...Rh2
- 2.d6#
- 1...Rb3
- 2.d6#
- 1...Rb4
- 2.d6#
- 1...Rc8
- 2.Qd4#
- 1...Bf2
- 2.Qc3#
- 2.d6#
- 1...Bc3
- 2.Qxc3#
- 2.d6#
- 1...Sf4
- 2.Qd4#
- 2.Qxf4#
- 1...Se5
- 2.Qf4#
- 1...Sf8
- 2.Qd4#
- 2.Qf4#
- 1...Sh8
- 2.Qd4#
- 2.Qf4#
- 1...Re2!
- threat
- 1.Sd2+?
- Keys
- 1.Be5!
- threat
- 2.d6#
- 1...Rxb7
- 2.Qc6#
- 1...Rxe7
- 2.Qc6#
- 1...Sxe5
- 2.Qf4#
- 1...Sxe7
- 2.Qf4#
- 1...d2
- 2.Qf1#
- 1...b4
- 2.Qa6#
- 1...Rc5
- 2.Sd6#
- 1...Rc8
- 2.Rxc8#
- 1...Sf4
- 2.Qxf4#
- 1...Sf8
- 2.Qf4#
- 1...Sh8
- 2.Qf4#
- threat
- 1.Be5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- R(c);S_CUTB(b)::S(G)
- R(h);OGATE::B(K)+P(D),XR(h)
- R(h);OGATEB,P_PINR(J)::R(J),XR(h)
- B(b);N_GUARD::QAR1(F),XB(b)
- B(b);N_GUARD::S(G),XB(b)
- S(g);N_GUARD::QAR(F),XS(g)
- S(g);N_GUARD::QAR(F)
- S(g);N_GUARD,XP(H)::QAR(F)
- P(d);S_CUTB(b)::QAR1(F)
- P(f);S_CUTB(b)::S(G)
- Tries
- Try
- S(A);CHECK
- Vars
- R(c);XS(A)::S(G)
- Refutation
- B(b);XS(A)
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- R(c);XB(E)::B(K)+P(D)
- R(h);XS(G)::B(K)+P(D)
- B(b);XB(E)::B(K)+P(D)
- S(g);N_GUARD::QAR(F)
- P(d);S_CUTB(b)::QAR1(F)
- Refutation
- P(i);XQ(F)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- Q(a);P_PINP(C),XP(B)::B(K)+P(D)
- R(c);XS(A)::B(K)+P(D)
- R(c);P_PINP(C),XP(B)::B(K)+P(D)
- R(h);SBLOCK,XB(E)::S(G)
- R(h);XS(G)::QAR1(F)
- R(h);XP(H)::QAR1(F)
- P(i);XQ(F)::B(K)+P(D)
- P(f);OGATEB::QAB(F)
- R(c);::B(K)+P(D)
- R(h);P_PINR(J)::QAR1(F)
- S(g);N_GUARD::QAR(F)
- Refutation
- R(c);
- Try
- Actual
- B(E);
- Threat
- B(K)+P(D)
- Vars
- R(h);N_GUARD,XS(G)::QAR2(F)
- R(h);N_GUARD,XP(H)::QAR2(F)
- S(g);N_GUARD,XB(E)::QAR(F)
- S(g);N_GUARD,XP(H)::QAR(F)
- P(d);OGATEB::QAB(F)
- P(f);OGATEB::QAB(F)
- R(h);SBLOCK::S(G)
- R(h);OGATEB,P_PINR(J)::R(J),XR(h)
- S(g);N_GUARD::QAR(F),XS(g)
- S(g);N_GUARD::QAR(F)
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).