MESON Chess Problem Database
Problem Display
PID: 169830 (8/2p2N2/p1P1B3/P4Np1/Qnp1k1K1/8/2P5/8 w - - 0 1)
Hermanson, Halvar
Schackvarlden, 1945
#2
8 + 6
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sa2
- 2.Qxc4#
- 1...Sxc2
- 2.Qxc2#
- 1...Sd3
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...Sxc6
- 2.Qxc6#
- 1...c3
- 2.Qxb4#
- 1...Sa2
- Tries
- 1.Kg3?
- 1...Sxc2
- 2.Qxc2#
- 1...Sxc6
- 2.Qxc6#
- 1...Sa2
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...c3
- 2.Qxb4#
- 1...g4!
- 1...Sxc2
- 1.Bd5+?
- 1...Sxd5
- 2.Qxc4#
- 1...Kxd5!
- 1...Sxd5
- 1.Qb3?
- threat
- 2.Qxc4#
- 2.Qe3#
- 2.Qf3#
- 1...Sxc2
- 2.Qxc2#
- 2.Qf3#
- 1...Sxc6
- 2.Qe3#
- 2.Qf3#
- 1...Sd3
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 2.Qf3#
- 1...c3
- 2.Qc4#
- 2.Qxb4#
- 1...cxb3!
- threat
- 1.Qb5?
- threat
- 2.Sxg5#
- 2.Qxc4#
- 2.Qe5#
- 1...Sxc2
- 2.Qd5#
- 1...Sxc6
- 2.Sxg5#
- 2.Bd5#
- 2.Qxc6#
- 2.Qd5#
- 1...Sd3
- 2.Sxg5#
- 2.Bd5#
- 2.Qxc4#
- 2.Qd5#
- 1...Sd5
- 2.Bxd5#
- 2.Qxc4#
- 2.Qxd5#
- 1...c3
- 2.Sxg5#
- 2.Qe2#
- 2.Qc4#
- 2.Qxb4#
- 2.Qe5#
- 1...axb5!
- threat
- 1.Qa1?
- threat
- 2.Sxg5#
- 2.Qd4#
- 2.Qe5#
- 2.Qe1#
- 2.Qh1#
- 1...Sxc6
- 2.Sxg5#
- 2.Qe1#
- 2.Qh1#
- 1...Sd3
- 2.Sxg5#
- 2.Qd4#
- 2.Qh1#
- 1...Sd5
- 2.Sxg5#
- 2.Qd4#
- 2.Qe5#
- 2.Qh1#
- 1...c3
- 2.Qe1#
- 2.Qh1#
- 1...Sxc2!
- threat
- 1.Qa3?
- threat
- 2.Qe3#
- 2.Qf3#
- 1...Sxc2
- 2.Qf3#
- 1...Sd5
- 2.Qf3#
- 1...c3
- 2.Qxb4#
- 1...Sd3!
- threat
- 1.c3?
- 1...Sxc6
- 2.Qc2#
- 1...Sa2
- 2.Qc2#
- 2.Qxc4#
- 1...Sc2
- 2.Qxc2#
- 1...Sd3
- 2.Qxc4#
- 1...Sd5
- 2.Qc2#
- 2.Qxc4#
- 1...Kd3!
- 1...Sxc6
- 1.Kg3?
- Keys
- 1.Bxc4!
- 1...Sxc2
- 2.Qxc2#
- 1...Sxc6
- 2.Qxc6#
- 1...Sa2
- 2.Bxa2#
- 1...Sd3
- 2.cxd3#
- 1...Sd5
- 2.Bd3#
- 1...Sxc2
- 1.Bxc4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- S(a);OGATE,P_SPINP(b)::QAR2(B),XP(b)
- S(a);OGATE,P_SPINP(b),XP(A)::QAB(B),XS(a)
- S(a);OGATE,P_SPINP(b),XP(F)::QAB(B),XS(a)
- P(b);OGATEB,P_SPINS(a)::QAR(B),XS(a)
- Tries
- Try
- K(C);P-FLIGHT
- Vars
- S(a);OGATE,P_SPINP(b),XP(A)::QAB(B),XS(a)
- S(a);OGATE,P_SPINP(b),XP(F)::QAB(B),XS(a)
- S(a);OGATE,P_SPINP(b)::QAR2(B),XP(b)
- P(b);OGATEB,P_SPINS(a)::QAR(B),XS(a)
- Refutation
- P(d);
- Try
- B(G);CHECK
- Vars
- S(a);OGATE,P_SPINP(b),XB(G)::QAR2(B),XP(b)
- Refutation
- K(c);S_FLIGHT,XB(G)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(a);::QAR2(B),XP(b)
- Refutation
- P(b);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(a);N_GUARD,XP(A)::QAB1(B)
- Refutation
- P(e);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(5)
- Refutation
- S(a);XP(A)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- S(a);XP(A)::QAB1(B)
- S(a);::QAB1(B)
- P(b);OGATEB::QAR(B),XS(a)
- Refutation
- S(a);
- Try
- P(A);
- Vars
- S(a);N_GUARD,P_SPINP(b),XP(F)::QAB(B)
- S(a);N_GUARD,P_SPINP(b)::QAB(B),XS(a)
- S(a);OGATE,P_SPINP(b)::QAR2(B),XP(b)
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- B(G);XP(b)
- Vars
- S(a);OGATE,XP(A)::QAB(B),XS(a)
- S(a);OGATE,XP(F)::QAB(B),XS(a)
- S(a);OGATEB::QAR(B)+B(G),XS(a)
- S(a);OGATE::P(A),XS(a)
- S(a);SBLOCK::QAR(B)+B(G),DCHECK
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).