MESON Chess Problem Database
Problem Display
PID: 225210 (4K1B1/8/b1p4p/rp1R4/r2Nk2N/b2pP1P1/n2pR3/BQq5 w - - 0 1)
Myllyniemi, Matti Arvo
2nd Prize, Suomen Shakki, 1974
#2
10 + 12
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Qh1#
- 1...Qh1
- 2.Qxh1#
- 1...Qc2
- 2.Qh1#
- 1...Qc3
- 2.Qh1#
- 1...Qc4
- 2.Qh1#
- 1...Qc5
- 2.Qh1#
- 1...Rxd4
- 2.exd4#
- 1...Qb2
- Tries
- 1.Sb3?
- threat
- 2.Re5#
- 2.Qxd3#
- 1...Qxb1
- 2.Sxd2#
- 2.Re5#
- 1...cxd5
- 2.Bh7#
- 1...d1Q
- 2.Re5#
- 1...d1R
- 2.Re5#
- 1...Qb2
- 2.Qxd3#
- 2.Qh1#
- 1...Qc2
- 2.Re5#
- 2.Qh1#
- 1...Qc3
- 2.Qh1#
- 1...Qc4
- 2.Sxd2#
- 2.Re5#
- 2.Qh1#
- 1...Qc5
- 2.Sxd2#
- 2.Qxd3#
- 2.Qh1#
- 1...Rd4
- 2.exd4#
- 1...Bb2
- 2.Qxd3#
- 1...Bd6
- 2.Qxd3#
- 1...Sc3
- 2.Qxd3#
- 1...Sb4
- 2.Re5#
- 1...b4!
- threat
- 1.Sdf3?
- threat
- 2.Re5#
- 2.Qxd3#
- 1...Qxb1
- 2.Sxd2#
- 2.Re5#
- 1...cxd5
- 2.Bh7#
- 1...d1Q
- 2.Re5#
- 1...d1R
- 2.Re5#
- 1...Qb2
- 2.Qxd3#
- 1...Qc2
- 2.Re5#
- 1...Qc4
- 2.Sxd2#
- 2.Re5#
- 1...Qc5
- 2.Sxd2#
- 2.Qxd3#
- 1...Rd4
- 2.Rxd4#
- 2.Re5#
- 2.exd4#
- 1...Bb2
- 2.Qxd3#
- 1...Bd6
- 2.Qxd3#
- 1...Sb4
- 2.Rd4#
- 2.Re5#
- 1...b4
- 2.Rd4#
- 1...Qc3!
- threat
- 1.Sdf5?
- threat
- 2.Re5#
- 2.Qxd3#
- 1...Qxb1
- 2.Re5#
- 1...d1Q
- 2.Re5#
- 1...d1R
- 2.Re5#
- 1...Qb2
- 2.Qxd3#
- 2.Qh1#
- 1...Qc2
- 2.Re5#
- 2.Qh1#
- 1...Qc3
- 2.Qh1#
- 1...Qc4
- 2.Re5#
- 2.Qh1#
- 1...Qc5
- 2.Qxd3#
- 2.Qh1#
- 1...Rd4
- 2.exd4#
- 1...Bb2
- 2.Sd6#
- 2.Qxd3#
- 1...Bd6
- 2.Sxd6#
- 2.Qxd3#
- 1...Sc3
- 2.Qxd3#
- 1...Sb4
- 2.Sd6#
- 2.Re5#
- 1...b4
- 2.Sd6#
- 1...cxd5!
- threat
- 1.Sxc6?
- threat
- 2.Re5#
- 2.Qxd3#
- 1...Qxb1
- 2.Re5#
- 1...d1Q
- 2.Re5#
- 1...d1R
- 2.Re5#
- 1...Qb2
- 2.Qxd3#
- 2.Qh1#
- 1...Qc2
- 2.Re5#
- 2.Qh1#
- 1...Qc3
- 2.Qh1#
- 1...Qc4
- 2.Re5#
- 2.Qh1#
- 1...Qc5
- 2.Qxd3#
- 2.Qh1#
- 1...Rd4
- 2.Rxd4#
- 2.Re5#
- 2.exd4#
- 1...Bb2
- 2.Qxd3#
- 1...Bd6
- 2.Qxd3#
- 1...Sb4
- 2.Rd4#
- 2.Re5#
- 1...b4
- 2.Rd4#
- 1...Qxc6+!
- threat
- 1.Sb3?
- Keys
- 1.Sxb5!
- threat
- 2.Re5#
- 2.Qxd3#
- 1...Qxb1
- 2.Re5#
- 1...Rxb5
- 2.Qxd3#
- 1...Bxb5
- 2.Re5#
- 1...cxd5
- 2.Bh7#
- 1...d1Q
- 2.Re5#
- 1...d1R
- 2.Re5#
- 1...Qb2
- 2.Qxd3#
- 2.Qh1#
- 1...Qc2
- 2.Re5#
- 2.Qh1#
- 1...Qc3
- 2.Qh1#
- 1...Qc4
- 2.Re5#
- 2.Qh1#
- 1...Qc5
- 2.Qxd3#
- 2.Qh1#
- 1...Rd4
- 2.exd4#
- 1...Bb2
- 2.Sd6#
- 2.Qxd3#
- 1...Bd6
- 2.Sxd6#
- 2.Qxd3#
- 1...Sc3
- 2.Qxd3#
- 1...Sb4
- 2.Sd6#
- 2.Re5#
- threat
- 1.Sxb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 5
- Sets
- Q(a);OGATE::QAB(B)
- Q(a);OGATE::QAB(B),XQ(a)
- Q(a);N_SPINP(e),OGATE::QAB(B)
- R(f);OGATE,XS(F)::R(C)+P(D),XR(f)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- P(k);SBLOCK,XR(H)::B(J)
- P(c);::R1(H)
- Q(a);OGATE::QAB(B)
- R(f);OGATE::R(C)+P(D),XR(f)
- B(d);::QAB1(B),XP(e)
- S(b);::QAB1(B),XP(e)
- S(b);::R1(H)
- Refutation
- P(i);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- P(k);SBLOCK,XR(H)::B(J)
- P(c);::R1(H)
- Q(a);::QAB1(B),XP(e)
- Q(a);N_SPINP(e)::R1(H)
- B(d);::QAB1(B),XP(e)
- P(i);S_CUTR(f)::R1(H)
- Refutation
- Q(a);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(a);N_SPINP(e),XQ(B)::R1(H)
- P(c);::R1(H)
- Q(a);OGATE::QAB(B)
- R(f);OGATE::R(C)+P(D),XR(f)
- S(b);::QAB1(B),XP(e)
- P(i);S_CUTB(d)::S(F)
- Refutation
- P(k);XR(H)
- Try
- S(F);XP(k)
- Threat
- DUALS(2)
- Vars
- Q(a);N_SPINP(e),XQ(B)::R1(H)
- P(c);::R1(H)
- Q(a);OGATE::QAB(B)
- B(d);::QAB1(B),XP(e)
- P(i);S_CUTR(f)::R1(H)
- Refutation
- Q(a);CHECK,XS(F)
- Try
- Actual
- S(F);XP(i)
- Threat
- DUALS(2)
- Vars
- Q(a);N_SPINP(e),XQ(B)::R1(H)
- R(h);XS(F)::QAB1(B),XP(e)
- B(j);XS(F)::R1(H)
- P(k);SBLOCK,XR(H)::B(J)
- P(c);::R1(H)
- Q(a);OGATE::QAB(B)
- R(f);OGATE::R(C)+P(D),XR(f)
- S(b);::QAB1(B),XP(e)
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).