MESON Chess Problem Database
Problem Display
PID: 72831 (8/n6p/5KbP/2pp4/2Bkpp1N/NPp1r3/2p1Q1p1/2r3B1 w - - 0 1)
Nanning, Frederik Willem
De Maasbode, 1924
#2
8 + 13
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Re1
- 2.Sxc2#
- 1...Rf1
- 2.Sxc2#
- 1...Rxg1
- 2.Sxc2#
- 1...Bf5
- 2.Sxf5#
- 1...Bh5
- 2.Sf5#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...f3
- 2.Bxe3#
- 2.Qxe3#
- 1...dxc4
- 2.Qxc4#
- 1...Ra1
- Tries
- 1.Ke6?
- 1...Bf5+
- 2.Sxf5#
- 1...Rxg1
- 2.Sxc2#
- 1...dxc4
- 2.Qxc4#
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Re1
- 2.Sxc2#
- 1...Rf1
- 2.Sxc2#
- 1...Bh5
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...f3
- 2.Bxe3#
- 2.Qxe3#
- 1...Bf7+!
- 1...Bf5+
- 1.Sxg6?
- 1...Rxg1
- 2.Sxc2#
- 1...dxc4
- 2.Qxc4#
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Re1
- 2.Sxc2#
- 1...Rf1
- 2.Sxc2#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...f3
- 2.Bxe3#
- 2.Qxe3#
- 1...hxg6!
- 1...Rxg1
- 1.Bxd5?
- threat
- 2.Qc4#
- 1...c4
- 2.Qxc4#
- 1...Kxd5!
- threat
- 1.Ba6?
- 1...Rxg1
- 2.Sxc2#
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Re1
- 2.Sxc2#
- 1...Rf1
- 2.Sxc2#
- 1...Bf5
- 2.Sxf5#
- 1...Bh5
- 2.Sf5#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...f3
- 2.Bxe3#
- 2.Qxe3#
- 1...c4!
- 1...Rxg1
- 1.Qh5?
- threat
- 2.Qxd5#
- 2.Qe5#
- 1...Bxh5
- 2.Sf5#
- 1...Bf5
- 2.Sxf5#
- 1...Bf7
- 2.Sf5#
- 2.Qe5#
- 1...Sc6
- 2.Sb5#
- 2.Qxd5#
- 1...dxc4!
- threat
- 1.Qe1?
- 1...Rxe1
- 2.Sxc2#
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Bf5
- 2.Sxf5#
- 1...Bh5
- 2.Sf5#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...f3
- 2.Bxe3#
- 2.Qxe3#
- 1...dxc4!
- 1...Rxe1
- 1.Qf2?
- 1...Rxg1
- 2.Sxc2#
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Re1
- 2.Sxc2#
- 1...Rf1
- 2.Sxc2#
- 1...Bf5
- 2.Sxf5#
- 1...Bh5
- 2.Sf5#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...f3
- 2.Qxe3#
- 1...dxc4!
- 1...Rxg1
- 1.b4?
- 1...Rxg1
- 2.Sxc2#
- 1...dxc4
- 2.Qxc4#
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Re1
- 2.Sxc2#
- 1...Rf1
- 2.Sxc2#
- 1...Bf5
- 2.Sxf5#
- 1...Bh5
- 2.Sf5#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...f3
- 2.Bxe3#
- 2.Qxe3#
- 1...cxb4!
- 1...Rxg1
- 1.Ke6?
- Keys
- 1.Qg4!
- 1...Rxg1
- 2.Sxc2#
- 1...dxc4
- 2.Qd7#
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Re1
- 2.Sxc2#
- 1...Rf1
- 2.Sxc2#
- 1...Bf5
- 2.Sxf5#
- 1...Bh5
- 2.Sf5#
- 1...Bf7
- 2.Sf5#
- 1...Be8
- 2.Sf5#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...f3
- 2.Sxf3#
- 1...Rxg1
- 1.Qg4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::S(C),XP(b)
- R(a);N_GUARD,N_SPINR(e),XB(A)::S(C),XP(b)
- B(k);N_GUARD::S(F),XB(k)
- B(k);N_GUARD::S(F)
- S(l);N_GUARD::S(C),XS(l)
- S(l);N_GUARD::S(C)
- P(j);OGATE,XB(E)::QAR1(B),XP(j)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- B(k);CHECK,N_GUARD::S(F),XB(k)
- R(a);N_GUARD,N_SPINR(e),XB(A)::S(C),XP(b)
- P(j);OGATE,XB(E)::QAR1(B),XP(j)
- R(a);N_GUARD::S(C),XP(b)
- B(k);N_GUARD::S(F)
- S(l);N_GUARD::S(C),XS(l)
- S(l);N_GUARD::S(C)
- Refutation
- B(k);CHECK
- Try
- S(F);XB(k)
- Vars
- R(a);N_GUARD,N_SPINR(e),XB(A)::S(C),XP(b)
- P(j);OGATE,XB(E)::QAR1(B),XP(j)
- R(a);N_GUARD::S(C),XP(b)
- S(l);N_GUARD::S(C),XS(l)
- S(l);N_GUARD::S(C)
- Refutation
- P(m);XS(F)
- Try
- B(E);XP(j)
- Threat
- QAR1(B)
- Vars
- P(i);::QAR1(B),XP(i)
- Refutation
- K(f);N_SPINR(e),P-FLIGHT,XB(E)
- Try
- B(E);
- Vars
- R(a);N_GUARD,N_SPINR(e),XB(A)::S(C),XP(b)
- R(a);N_GUARD::S(C),XP(b)
- B(k);N_GUARD::S(F),XB(k)
- B(k);N_GUARD::S(F)
- S(l);N_GUARD::S(C),XS(l)
- S(l);N_GUARD::S(C)
- Refutation
- P(i);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(k);N_GUARD,XQ(B)::S(F)
- B(k);N_GUARD::S(F),XB(k)
- Refutation
- P(j);XB(E)
- Try
- Q(B);
- Vars
- R(a);N_GUARD,XQ(B)::S(C),XP(b)
- R(a);N_GUARD::S(C),XP(b)
- B(k);N_GUARD::S(F),XB(k)
- B(k);N_GUARD::S(F)
- S(l);N_GUARD::S(C),XS(l)
- S(l);N_GUARD::S(C)
- Refutation
- P(j);XB(E)
- Try
- Q(B);
- Vars
- R(a);N_GUARD,XB(A)::S(C),XP(b)
- R(a);N_GUARD::S(C),XP(b)
- B(k);N_GUARD::S(F),XB(k)
- B(k);N_GUARD::S(F)
- S(l);N_GUARD::S(C),XS(l)
- S(l);N_GUARD::S(C)
- P(h);N_GUARD::QAB1(B),XR(e)
- Refutation
- P(j);XB(E)
- Try
- P(D);
- Vars
- R(a);N_GUARD,N_SPINR(e),XB(A)::S(C),XP(b)
- P(j);OGATE,XB(E)::QAR1(B),XP(j)
- R(a);N_GUARD::S(C),XP(b)
- B(k);N_GUARD::S(F),XB(k)
- B(k);N_GUARD::S(F)
- S(l);N_GUARD::S(C),XS(l)
- S(l);N_GUARD::S(C)
- Refutation
- P(i);XP(D)
- Try
- Actual
- Q(B);
- Vars
- R(a);N_GUARD,N_SPINR(e),XB(A)::S(C),XP(b)
- P(j);OGATEB,XB(E)::QAR(B)
- R(a);N_GUARD::S(C),XP(b)
- B(k);N_GUARD::S(F),XB(k)
- B(k);N_GUARD::S(F)
- S(l);N_GUARD::S(C),XS(l)
- S(l);N_GUARD::S(C)
- P(h);P_SPINP(g)::S(F),XP(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).