MESON Chess Problem Database
Problem Display
PID: 23904 (6b1/1pp1R2r/N5Np/QP1kP2K/1p1P3R/3Pn2B/3b4/2r5 w - - 0 1)
Heyl, Peter
Schach, 1997
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxc7#
- 1...Rb1
- 2.Sxc7#
- 1...Rd1
- 2.Sxc7#
- 1...Re1
- 2.Sxc7#
- 1...Rf1
- 2.Sxc7#
- 1...Rg1
- 2.Sxc7#
- 1...Rh1
- 2.Sxc7#
- 1...Rc3
- 2.Sxb4#
- 1...Rxe7
- 2.Sxe7#
- 1...Rf7
- 2.Be6#
- 1...Rh8
- 2.Rd7#
- 1...Bc3
- 2.Sxc7#
- 1...Be6
- 2.Bxe6#
- 1...Bf7
- 2.Rd7#
- 1...Sd1
- 2.Bg2#
- 1...Sf1
- 2.Bg2#
- 1...Sc2
- 2.Sxc7#
- 2.Bg2#
- 1...Sg2
- 2.Bxg2#
- 1...Sc4
- 2.Sxc7#
- 2.Bg2#
- 1...Sf5
- 2.Bg2#
- 1...c5
- 2.Sc7#
- 2.Qd8#
- 1...c6
- 2.Sc7#
- 2.Qd8#
- 1...Ra1
- Tries
- 1.Qxb4?
- threat
- 2.Sf4#
- 1...Bxb4
- 2.Sxb4#
- 1...Rf1
- 2.Sxc7#
- 2.Qc5#
- 1...Rf7
- 2.Be6#
- 1...Bf7
- 2.Rd7#
- 1...Sd1
- 2.Bg2#
- 1...Sf1
- 2.Bg2#
- 1...Sc2
- 2.Sxc7#
- 2.Bg2#
- 2.Qc5#
- 2.Qb3#
- 2.Qc4#
- 1...Sg2
- 2.Bxg2#
- 1...Sc4
- 2.Sxc7#
- 2.Bg2#
- 2.Qc5#
- 1...Sg4
- 2.Bg2#
- 1...Sf5
- 2.Bg2#
- 1...Rc4!
- threat
- 1.Qb6?
- threat
- 2.Sf4#
- 1...Rf1
- 2.Sxc7#
- 2.Qc5#
- 1...Rc5
- 2.Qxc5#
- 1...Rf7
- 2.Be6#
- 2.Qe6#
- 1...Bf7
- 2.Rd7#
- 1...Sd1
- 2.Bg2#
- 1...Sf1
- 2.Bg2#
- 1...Sc2
- 2.Sxc7#
- 2.Bg2#
- 2.Qc5#
- 1...Sg2
- 2.Bxg2#
- 1...Sc4
- 2.Sxc7#
- 2.Bg2#
- 2.Qc5#
- 1...Sg4
- 2.Bg2#
- 1...Sf5
- 2.Bg2#
- 1...c5
- 2.Sc7#
- 2.Qd8#
- 2.Qd6#
- 2.Qxb7#
- 1...cxb6!
- threat
- 1.Qxc7?
- threat
- 2.Qd6#
- 2.Qd8#
- 2.Qd7#
- 1...Rxc7
- 2.Sxc7#
- 1...Rxe7
- 2.Sxe7#
- 2.Qd6#
- 1...Be6
- 2.Bxe6#
- 2.Qd6#
- 1...Sc4
- 2.Bg2#
- 2.Qc5#
- 2.Qxb7#
- 1...Sf5
- 2.Bg2#
- 1...Rc6!
- threat
- 1.Qa2+?
- 1...Rc4
- 2.Sxc7#
- 1...Sc4
- 2.Sxc7#
- 2.Bg2#
- 1...b3!
- 1...Rc4
- 1.b6+?
- 1...Kc6
- 2.Sb8#
- 2.Bd7#
- 1...Rc5
- 2.Qxc5#
- 1...c5!
- 1...Kc6
- 1.Qxb4?
- Keys
- 1.Qa1!
- threat
- 2.Sf4#
- 1...Rxa1
- 2.Sxc7#
- 1...Rf1
- 2.Sxc7#
- 1...Rc3
- 2.Sxb4#
- 1...Rf7
- 2.Be6#
- 1...Bc3
- 2.Sxc7#
- 1...Bf7
- 2.Rd7#
- 1...Sd1
- 2.Bg2#
- 1...Sf1
- 2.Bg2#
- 1...Sc2
- 2.Sxc7#
- 2.Bg2#
- 1...Sg2
- 2.Bxg2#
- 1...Sc4
- 2.Sxc7#
- 2.Bg2#
- 1...Sg4
- 2.Bg2#
- 1...Sf5
- 2.Bg2#
- threat
- 1.Qa1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- R(a);N_GUARD::S(I),XP(h)
- R(a);S_CUTB(b)::S(I),XP(d)
- R(i);XR(K)::S(J),XR(i)
- R(i);S_CUTB(j)::B(B)
- R(i);N_GUARD::R(K)
- B(b);S_CUTR(a)::S(I),XP(h)
- B(j);N_GUARD::B(B),XB(j)
- B(j);P_PINS(J),S_CUTR(i)::R(K)
- S(c);N_GUARD::B(B)
- S(c);N_GUARD::B(B),XS(c)
- Tries
- Try
- Q(E);XP(d)
- Threat
- S(J)
- Vars
- B(b);XQ(E)::S(I),XB(b)
- R(i);S_CUTB(j)::B(B)
- B(j);P_PINS(J),S_CUTR(i)::R(K)
- S(c);N_GUARD::B(B)
- S(c);N_GUARD::B(B),XS(c)
- Refutation
- R(a);
- Try
- Q(E);
- Threat
- S(J)
- Vars
- R(a);N_GUARD::QAR1(E),XR(a)
- B(j);P_PINS(J),S_CUTR(i)::R(K)
- S(c);N_GUARD::B(B)
- S(c);N_GUARD::B(B),XS(c)
- Refutation
- P(h);XQ(E)
- Try
- Q(E);XP(h)
- Threat
- DUALS(3)
- Vars
- R(a);XQ(E)::S(I),XR(a)
- S(c);N_GUARD::B(B)
- Refutation
- R(a);
- Try
- Q(E);CHECK
- Vars
- R(a);P_SPINR(a)::S(I),XP(h)
- Refutation
- P(d);P_SPINP(d)
- Try
- P(F);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAR1(E),XR(a)
- Refutation
- P(h);P_SPINP(h)
- Try
- Actual
- Q(E);
- Threat
- S(J)
- Vars
- R(a);N_GUARD,XQ(E)::S(I),XP(h)
- R(a);N_GUARD::S(I),XP(h)
- R(a);S_CUTB(b)::S(I),XP(d)
- R(i);S_CUTB(j)::B(B)
- B(b);S_CUTR(a)::S(I),XP(h)
- B(j);P_PINS(J),S_CUTR(i)::R(K)
- S(c);N_GUARD::B(B)
- S(c);N_GUARD::B(B),XS(c)
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).