MESON Chess Problem Database
Problem Display
PID: 238071 (r2R1n1B/3p4/p1p1PN2/n3p2b/3kpQ2/2R5/K2P2qp/2N3bB w - - 0 1)
Hermanson, Halvar
Deutsche Schachzeitung, 1978
#2
10 + 13
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Qxe4#
- 1...Qh3
- 2.Qxe4#
- 1...Qxd2+
- 2.Qxd2#
- 1...Qf2
- 2.Qxe4#
- 1...Qg3
- 2.Qxe4#
- 1...Qg5
- 2.Qxe4#
- 1...Qg7
- 2.Qxe4#
- 1...Qg8
- 2.Qxe4#
- 1...Be3
- 2.Qxe3#
- 1...Sb3
- 2.Sxb3#
- 1...Sc4
- 2.Sb3#
- 1...Sb7
- 2.Sb3#
- 1...Sxe6
- 2.Rxd7#
- 1...Sg6
- 2.Rxd7#
- 1...Sh7
- 2.Rxd7#
- 1...d6
- 2.Rxd6#
- 1...Qf1
- Tries
- 1.Sxe4?
- threat
- 2.Qxe5#
- 1...Qxd2+
- 2.Qxd2#
- 1...Kd5
- 2.Qxe5#
- 1...Qxe4
- 2.Qxe4#
- 1...Qg3
- 2.Sxg3#
- 1...Qg5
- 2.Sxg5#
- 1...Sc4
- 2.Rd3#
- 1...Sg6
- 2.Rxd7#
- 1...Qg7!
- threat
- 1.Sg4?
- threat
- 2.Qxe5#
- 1...Qxd2+
- 2.Qxd2#
- 1...Kd5
- 2.Qxe5#
- 1...Qg3
- 2.Qxe4#
- 1...Sg6
- 2.Rxd7#
- 1...Sc4!
- threat
- 1.Sxh5?
- threat
- 2.Qxe5#
- 1...Qxd2+
- 2.Qxd2#
- 1...Kd5
- 2.Qxe5#
- 1...Qg3
- 2.Qxe4#
- 1...Qg5
- 2.Qxe4#
- 1...Qg7
- 2.Qxe4#
- 1...Sg6
- 2.Rxd7#
- 1...Sc4!
- threat
- 1.Sh7?
- threat
- 2.Qxe5#
- 1...Qxd2+
- 2.Qxd2#
- 1...Kd5
- 2.Qxe5#
- 1...Qg3
- 2.Qxe4#
- 1...Qg5
- 2.Qxe4#
- 1...Qg7
- 2.Qxe4#
- 1...Sg6
- 2.Rxd7#
- 1...Sc4!
- threat
- 1.Se8?
- threat
- 2.Qxe5#
- 1...Qxd2+
- 2.Qxd2#
- 1...Kd5
- 2.Qxe5#
- 1...Qg3
- 2.Qxe4#
- 1...Qg5
- 2.Qxe4#
- 1...Qg7
- 2.Qxe4#
- 1...Sg6
- 2.Rxd7#
- 1...Sc4!
- threat
- 1.Sg8?
- threat
- 2.Qxe5#
- 1...Qxd2+
- 2.Qxd2#
- 1...Kd5
- 2.Qxe5#
- 1...Qg3
- 2.Qxe4#
- 1...Qg5
- 2.Qxe4#
- 1...Qg7
- 2.Qxe4#
- 1...Sg6
- 2.Rxd7#
- 1...Sc4!
- threat
- 1.Sxe4?
- Keys
- 1.Sxd7!
- threat
- 2.Qxe5#
- 1...Qxd2+
- 2.Qxd2#
- 1...Kd5
- 2.Qxe5#
- 1...Qg3
- 2.Qxe4#
- 1...Qg5
- 2.Qxe4#
- 1...Qg7
- 2.Qxe4#
- 1...Sc4
- 2.Rd3#
- 1...Sg6
- 2.Sb8#
- threat
- 1.Sxd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- Q(b);N_GUARD,N_PINP(D)::QAR1(F),XP(e)
- Q(b);CHECK,OGATE,XP(D)::QAR2(F),XQ(b)
- Q(b);N_GUARD::QAR1(F),XP(e)
- Q(b);N_GUARD,N_PINP(D),P_PINP(G)::QAR1(F),XP(e)
- B(a);N_GUARD::QAB1(F),XB(a)
- S(f);N_GUARD::S(A),XS(f)
- S(f);N_GUARD::S(A)
- S(m);N_GUARD,XP(G)::R(I),XP(k)
- S(m);N_GUARD::R(I),XP(k)
- P(k);OGATE::R(I),XP(k)
- Tries
- Try
- S(H);P_PINP(g),XP(e)
- Threat
- QAB1(F),XP(g)
- Vars
- Q(b);CHECK,OGATE,XP(D)::QAR2(F),XQ(b)
- K(d);N_SPINP(g),P-FLIGHT,P_SPINP(k)::QAR1(F),XP(g)
- Q(b);N_PINP(D),OGATE,P_SPINQ(b),XS(H)::QAR1(F),XQ(b)
- Q(b);N_GUARD,N_PINP(D)::QAR(F)+S(H),XQ(b)
- S(f);SBLOCK::R1(E)
- S(m);N_GUARD::R(I),XP(k)
- Refutation
- Q(b);N_PINP(D),N_SPINP(g),P_SPINP(k)
- Try
- S(H);
- Threat
- QAB1(F),XP(g)
- Vars
- Q(b);CHECK,OGATE,XP(D)::QAR2(F),XQ(b)
- K(d);N_SPINP(e),P-FLIGHT,P_SPINP(k)::QAR1(F),XP(g)
- Q(b);N_GUARD,N_PINP(D)::QAR1(F),XP(e)
- S(m);N_GUARD::R(I),XP(k)
- Refutation
- S(f);
- Try
- S(H);XB(h)
- Threat
- QAB1(F),XP(g)
- Vars
- Q(b);CHECK,OGATE,XP(D)::QAR2(F),XQ(b)
- K(d);N_SPINP(e),P-FLIGHT,P_SPINP(k)::QAR1(F),XP(g)
- Q(b);N_GUARD,N_PINP(D)::QAR1(F),XP(e)
- S(m);N_GUARD::R(I),XP(k)
- Refutation
- S(f);
- Try
- S(H);
- Threat
- QAB1(F),XP(g)
- Vars
- Q(b);CHECK,OGATE,XP(D)::QAR2(F),XQ(b)
- K(d);N_SPINP(e),P-FLIGHT,P_SPINP(k)::QAR1(F),XP(g)
- Q(b);N_GUARD,N_PINP(D)::QAR1(F),XP(e)
- S(m);N_GUARD::R(I),XP(k)
- Refutation
- S(f);
- Try
- S(H);
- Threat
- QAB1(F),XP(g)
- Vars
- Q(b);CHECK,OGATE,XP(D)::QAR2(F),XQ(b)
- K(d);N_SPINP(e),P-FLIGHT,P_SPINP(k)::QAR1(F),XP(g)
- Q(b);N_GUARD,N_PINP(D)::QAR1(F),XP(e)
- S(m);N_GUARD::R(I),XP(k)
- Refutation
- S(f);
- Try
- S(H);
- Threat
- QAB1(F),XP(g)
- Vars
- Q(b);CHECK,OGATE,XP(D)::QAR2(F),XQ(b)
- K(d);N_SPINP(e),P-FLIGHT,P_SPINP(k)::QAR1(F),XP(g)
- Q(b);N_GUARD,N_PINP(D)::QAR1(F),XP(e)
- S(m);N_GUARD::R(I),XP(k)
- Refutation
- S(f);
- Try
- Actual
- S(H);XP(k)
- Threat
- QAB1(F),XP(g)
- Vars
- Q(b);CHECK,OGATE,XP(D)::QAR2(F),XQ(b)
- K(d);N_SPINP(e),P-FLIGHT::QAR1(F),XP(g)
- Q(b);N_GUARD,N_PINP(D)::QAR1(F),XP(e)
- S(f);SBLOCK::R1(E)
- S(m);N_GUARD::R(I)+S(H)
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).