MESON Chess Problem Database
Problem Display
PID: 239845 (r2n1b2/1BPKQ3/1B2p3/Rp2kp1R/2pNP3/n2p3q/6N1/8 w - - 0 1)
Hermanson, Halvar
Themes-64, 1984
#2
10 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxg2
- 2.Rxf5#
- 1...Qh1
- 2.Sf3#
- 2.Rxf5#
- 1...Qh2
- 2.Sf3#
- 2.Rxf5#
- 1...Qe3
- 2.Rxf5#
- 1...Qf3
- 2.Sxf3#
- 1...Qg3
- 2.Rxf5#
- 1...Qh4
- 2.Sf3#
- 2.Rxf5#
- 1...Rb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Bg7
- 2.Qxg7#
- 1...Sb1
- 2.Rxb5#
- 1...Sc2
- 2.Rxb5#
- 1...Sc6
- 2.Qxe6#
- 1...Sxb7
- 2.Qxe6#
- 1...Sf7
- 2.Qxe6#
- 1...Qxg2
- Tries
- 1.Sc2?
- threat
- 2.Bd4#
- 1...Qxg2
- 2.Rxf5#
- 1...Sxc2
- 2.Rxb5#
- 1...Sxb7
- 2.Qxe6#
- 1...Sc6
- 2.Qxe6#
- 1...Qe3
- 2.Rxf5#
- 1...dxc2!
- threat
- 1.Se2?
- threat
- 2.Bd4#
- 1...Sxb7
- 2.Qxe6#
- 1...Sc6
- 2.Qxe6#
- 1...Qe3
- 2.Rxf5#
- 1...Sc2
- 2.Rxb5#
- 1...dxe2!
- threat
- 1.Sb3?
- threat
- 2.Bd4#
- 1...Qxg2
- 2.Rxf5#
- 1...Sxb7
- 2.Qxe6#
- 1...Sc6
- 2.Qxe6#
- 1...Qe3
- 2.Rxf5#
- 1...Sc2
- 2.Rxb5#
- 1...cxb3!
- threat
- 1.Sxf5?
- threat
- 2.Bd4#
- 1...Qxf5
- 2.Rxf5#
- 1...Sxb7
- 2.Qxe6#
- 1...Sc6
- 2.Qxe6#
- 1...Qe3
- 2.Sfxe3#
- 1...Sc2
- 2.Rxb5#
- 1...Qxg2!
- threat
- 1.Sc6+?
- 1...Sxc6
- 2.Qxe6#
- 1...Kxe4!
- 1...Sxc6
- 1.Sxe6?
- threat
- 2.Bd4#
- 1...Sxe6
- 2.Qxe6#
- 1...Sxb7
- 2.Sxf8#
- 1...Qe3
- 2.Rxf5#
- 1...Sc2
- 2.Rxb5#
- 1...Sc6!
- threat
- 1.Rxh3?
- threat
- 2.Sf3#
- 1...Sxb7
- 2.Qxe6#
- 1...fxe4
- 2.Rh5#
- 2.Qg5#
- 1...Sc6
- 2.Qxe6#
- 1...Bxe7!
- threat
- 1.Sc2?
- Keys
- 1.Sxb5!
- threat
- 2.Bd4#
- 1...Qxg2
- 2.Rxf5#
- 1...Sxb5
- 2.Rxb5#
- 1...Sxb7
- 2.Qxe6#
- 1...Sc6
- 2.Qxe6#
- 1...Qe3
- 2.Rxf5#
- 1...Sc2
- 2.Sa7#
- threat
- 1.Sxb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- Q(c);N_GUARD,XS(A)::R1(E),XP(g)
- Q(c);N_GUARD::R1(E),XP(g)
- Q(c);N_GUARD::S(B),XQ(c)
- R(i);OGATE::PXR(i)=Q
- B(k);N_GUARD::QAB(J),XB(k)
- S(a);N_GUARD::R(D),XP(e)
- S(j);N_GUARD::QAR1(J),XP(h)
- S(j);N_GUARD,XB(G)::QAR1(J),XP(h)
- Tries
- Try
- S(B);
- Threat
- B(F)
- Vars
- Q(c);N_GUARD,XS(A)::R1(E),XP(g)
- S(a);N_GUARD,XS(B)::R(D),XP(e)
- S(j);N_GUARD,XB(G)::QAR1(J),XP(h)
- S(j);N_GUARD::QAR1(J),XP(h)
- Q(c);N_GUARD::R1(E),XP(g)
- Refutation
- P(b);XS(B)
- Try
- S(B);
- Threat
- B(F)
- Vars
- S(j);N_GUARD,XB(G)::QAR1(J),XP(h)
- S(j);N_GUARD::QAR1(J),XP(h)
- Q(c);N_GUARD::R1(E),XP(g)
- S(a);N_GUARD::R(D),XP(e)
- Refutation
- P(b);XS(B)
- Try
- S(B);
- Threat
- B(F)
- Vars
- Q(c);N_GUARD,XS(A)::R1(E),XP(g)
- S(j);N_GUARD,XB(G)::QAR1(J),XP(h)
- S(j);N_GUARD::QAR1(J),XP(h)
- Q(c);N_GUARD::R1(E),XP(g)
- S(a);N_GUARD::R(D),XP(e)
- Refutation
- P(d);XS(B)
- Try
- S(B);XP(g)
- Threat
- B(F)
- Vars
- Q(c);OGATE,P_SPINQ(c),XS(B)::R1(E),XQ(c)
- S(j);N_GUARD,XB(G)::QAR1(J),XP(h)
- S(j);N_GUARD::QAR1(J),XP(h)
- Q(c);N_GUARD::R(E)+S(B),XQ(c)
- S(a);N_GUARD::R(D),XP(e)
- Refutation
- Q(c);XS(A)
- Try
- S(B);CHECK
- Vars
- S(j);XS(B)::QAR1(J),XP(h)
- Refutation
- K(f);N_SPINP(e),P-FLIGHT,P_SPINP(h),XP(C)
- Try
- S(B);XP(h)
- Threat
- B(F)
- Vars
- S(j);OGATE,P_SPINS(j),XS(B)::QAR1(J),XS(j)
- S(j);N_GUARD,XB(G)::QAR(J)+S(B),XB(k)
- Q(c);N_GUARD::R1(E),XP(g)
- S(a);N_GUARD::R(D),XP(e)
- Refutation
- S(j);
- Try
- R(E);XQ(c)
- Threat
- S(B)
- Vars
- S(j);N_GUARD,XB(G)::QAR1(J),XP(h)
- S(j);N_GUARD::QAR1(J),XP(h)
- Refutation
- B(k);XQ(J)
- Try
- Actual
- S(B);P_PINP(g),XP(e)
- Threat
- B(F)
- Vars
- Q(c);N_GUARD,XS(A)::R1(E),XP(g)
- S(a);OGATE,P_SPINS(a),XS(B)::R(D),XS(a)
- S(j);N_GUARD,XB(G)::QAR1(J),XP(h)
- S(j);N_GUARD::QAR1(J),XP(h)
- Q(c);N_GUARD::R1(E),XP(g)
- S(a);N_GUARD::R(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).