MESON Chess Problem Database
Problem Display
PID: 226636 (8/4p3/4P1p1/2K2pPb/1Qpp1knB/3P1NR1/8/8 w - - 0 1)
Hermanson, Halvar
Deutsche Schachzeitung, 1975
#2
8 + 8
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ke3
- 2.Qd2#
- 1...Sf2
- 2.Qd2#
- 1...Sh2
- 2.Qd2#
- 1...Se3
- 2.Qb8#
- 1...Se5
- 2.Qd2#
- 1...Sf6
- 2.Qd2#
- 1...Sh6
- 2.Qd2#
- 1...cxd3
- 2.Qxd4#
- 1...c3
- 2.Qxd4#
- 1...Ke3
- Tries
- 1.Kxd4?
- 1...cxd3
- 2.Kxd3#
- 1...Sf2
- 2.Qd2#
- 2.Qb8#
- 1...Sh2
- 2.Qd2#
- 2.Qb8#
- 1...Se3
- 2.Qb8#
- 1...Se5
- 2.Qd2#
- 1...Sf6
- 2.Qd2#
- 2.Qb8#
- 1...Sh6
- 2.Qd2#
- 2.Qb8#
- 1...c3!
- 1...cxd3
- 1.Kb5?
- 1...Ke3
- 2.Qd2#
- 1...cxd3
- 2.Qxd4#
- 1...Sf2
- 2.Qd2#
- 1...Sh2
- 2.Qd2#
- 1...Se5
- 2.Qd2#
- 1...Sf6
- 2.Qd2#
- 1...Sh6
- 2.Qd2#
- 1...c3
- 2.Qxd4#
- 1...Se3!
- 1...Ke3
- 1.Kb6?
- 1...Ke3
- 2.Qd2#
- 1...cxd3
- 2.Qxd4#
- 1...Sf2
- 2.Qd2#
- 1...Sh2
- 2.Qd2#
- 1...Se5
- 2.Qd2#
- 1...Sf6
- 2.Qd2#
- 1...Sh6
- 2.Qd2#
- 1...c3
- 2.Qxd4#
- 1...Se3!
- 1...Ke3
- 1.Kc6?
- 1...Ke3
- 2.Qd2#
- 1...cxd3
- 2.Qxd4#
- 1...Se3
- 2.Qb8#
- 1...Sf2
- 2.Qd2#
- 1...Sh2
- 2.Qd2#
- 1...Sf6
- 2.Qd2#
- 1...Sh6
- 2.Qd2#
- 1...c3
- 2.Qxd4#
- 1...Se5+!
- 1...Ke3
- 1.Se1?
- 1...cxd3
- 2.Qxd4#
- 1...Se3
- 2.Qb8#
- 1...Sf2
- 2.Qb8#
- 1...Sh2
- 2.Qb8#
- 1...Se5
- 2.Sg2#
- 2.Qd2#
- 1...Sf6
- 2.Qb8#
- 1...Sh6
- 2.Qb8#
- 1...c3
- 2.Qxd4#
- 1...Ke5!
- 1...cxd3
- 1.Sg1?
- 1...cxd3
- 2.Qxd4#
- 1...Se3
- 2.Qb8#
- 1...Sf2
- 2.Qb8#
- 1...Sh2
- 2.Qb8#
- 1...Se5
- 2.Sh3#
- 2.Qd2#
- 1...Sf6
- 2.Qb8#
- 1...Sh6
- 2.Qb8#
- 1...c3
- 2.Qxd4#
- 1...Ke5!
- 1...cxd3
- 1.Sh2?
- 1...Sxh2
- 2.Qb8#
- 1...cxd3
- 2.Qxd4#
- 1...Se3
- 2.Qb8#
- 1...Sf2
- 2.Qb8#
- 1...Se5
- 2.Qd2#
- 1...Sf6
- 2.Qb8#
- 1...Sh6
- 2.Qb8#
- 1...c3
- 2.Qxd4#
- 1...Ke5!
- 1...Sxh2
- 1.Qc3?
- threat
- 2.Qxd4#
- 1...Ke3
- 2.Qd2#
- 1...Sf2
- 2.Qd2#
- 2.Qc1#
- 1...Sf6
- 2.Qd2#
- 2.Qc1#
- 1...dxc3!
- threat
- 1.Qb2?
- threat
- 2.Qxd4#
- 1...Ke3
- 2.Qd2#
- 1...Sf2
- 2.Qc1#
- 2.Qd2#
- 1...Sf6
- 2.Qc1#
- 2.Qd2#
- 1...c3!
- threat
- 1.Qxc4?
- threat
- 2.Qxd4#
- 1...Sf2
- 2.Qc1#
- 1...Sf6
- 2.Qc1#
- 1...Ke3!
- threat
- 1.Qb8+?
- 1...Se5
- 2.Qxe5#
- 1...Ke3!
- 1...Se5
- 1.Kxd4?
- Keys
- 1.Sxd4!
- 1...Ke5
- 2.Qb8#
- 1...cxd3
- 2.Sc6#
- 1...Se3
- 2.Qb8#
- 1...Sf2
- 2.Qb8#
- 1...Sh2
- 2.Qb8#
- 1...Se5
- 2.Qd2#
- 1...Sf6
- 2.Qb8#
- 1...Sh6
- 2.Qb8#
- 1...c3
- 2.Sc6#
- 1...Ke5
- 1.Sxd4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(c);S_FLIGHT::QAB1(D)
- S(d);N_GUARD::QAB(D)
- S(d);N_GUARD,SBLOCK::QAB(D)
- P(a);OGATE,P_SPINP(b),XP(A)::QAR2(D),XP(b)
- P(a);OGATE,P_SPINP(b)::QAR2(D),XP(b)
- Tries
- Try
- K(F);S_FLIGHT,XP(b)
- Vars
- P(a);XP(A)::QAR(D)+K(F),XP(a)
- S(d);N_GUARD::QAB(D)
- Refutation
- P(a);
- Try
- K(F);P-FLIGHT
- Vars
- K(c);S_FLIGHT::QAB1(D)
- P(a);OGATE,P_SPINP(b),XP(A)::QAR2(D),XP(b)
- S(d);N_GUARD::QAB(D)
- P(a);OGATE,P_SPINP(b)::QAR2(D),XP(b)
- Refutation
- S(d);
- Try
- K(F);S_FLIGHT
- Vars
- K(c);S_FLIGHT::QAB1(D)
- P(a);OGATE,P_SPINP(b),XP(A)::QAR2(D),XP(b)
- S(d);N_GUARD::QAB(D)
- P(a);OGATE,P_SPINP(b)::QAR2(D),XP(b)
- Refutation
- S(d);
- Try
- K(F);P-FLIGHT
- Vars
- K(c);S_FLIGHT::QAB1(D)
- P(a);OGATE,P_SPINP(b),XP(A)::QAR2(D),XP(b)
- S(d);N_GUARD,SBLOCK::QAB(D)
- S(d);N_GUARD::QAB(D)
- P(a);OGATE,P_SPINP(b)::QAR2(D),XP(b)
- Refutation
- S(d);CHECK
- Try
- S(B);
- Vars
- P(a);OGATE,P_SPINP(b),XP(A)::QAR2(D),XP(b)
- S(d);N_GUARD::QAB(D)
- P(a);OGATE,P_SPINP(b)::QAR2(D),XP(b)
- Refutation
- K(c);S_FLIGHT
- Try
- S(B);
- Vars
- P(a);OGATE,P_SPINP(b),XP(A)::QAR2(D),XP(b)
- S(d);N_GUARD::QAB(D)
- P(a);OGATE,P_SPINP(b)::QAR2(D),XP(b)
- Refutation
- K(c);S_FLIGHT
- Try
- S(B);
- Vars
- S(d);N_GUARD,XS(B)::QAB(D)
- P(a);OGATE,P_SPINP(b),XP(A)::QAR2(D),XP(b)
- S(d);N_GUARD::QAB(D)
- S(d);N_GUARD,SBLOCK::QAB(D)
- P(a);OGATE,P_SPINP(b)::QAR2(D),XP(b)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(D);
- Threat
- QAR2(D),XP(b)
- Vars
- K(c);S_FLIGHT::QAB1(D)
- Refutation
- P(b);XQ(D)
- Try
- Q(D);
- Threat
- QAR2(D),XP(b)
- Vars
- K(c);S_FLIGHT::QAB1(D)
- Refutation
- P(a);
- Try
- Q(D);P_PINP(b),XP(a)
- Threat
- QAR2(D),XP(b)
- Vars
- S(d);N_GUARD::QAB(D)
- Refutation
- K(c);N_SPINP(b),S_FLIGHT
- Try
- Q(D);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::QAB1(D),XS(d)
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- S(B);XP(b)
- Vars
- K(c);S_FLIGHT::QAB(D)
- P(a);XP(A)::QAR(D)+S(B)
- S(d);N_GUARD::QAB(D)
- S(d);N_GUARD,SBLOCK::QAB(D)
- P(a);::QAR(D)+S(B)
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).