MESON Chess Problem Database
Problem Display
PID: 11241 (8/8/8/2pnB3/2N1p2p/1P1k2pN/2r1p1QR/KB4n1 w - - 0 1)
Hartong, Jan
De Schaakwereld, 1937
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Sf3
- 2.Qxe2#
- 1...Sxh3
- 2.Qxe2#
- 1...Sc3
- 2.Sf4#
- 1...Se3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sf6
- 2.Sf4#
- 1...Sc7
- 2.Sf4#
- 1...Se7
- 2.Sf4#
- 1...e1Q
- 2.Qxc2#
- 1...e1S
- 2.Qd2#
- 1...e1B
- 2.Bxc2#
- 2.Qxc2#
- 1...e1R
- 2.Qxc2#
- 2.Qd2#
- 1...gxh2
- 2.Sf2#
- 1...e3
- 2.Qxd5#
- 1...Sf3
- Tries
- 1.Bb2?
- 1...Sxh3
- 2.Qxe2#
- 1...gxh2
- 2.Sf2#
- 1...e1Q
- 2.Qxc2#
- 1...e1S
- 2.Qd2#
- 1...e1B
- 2.Bxc2#
- 2.Qxc2#
- 1...e1R
- 2.Qxc2#
- 2.Qd2#
- 1...Sf3
- 2.Qxe2#
- 1...Se3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sf6
- 2.Sf4#
- 1...Sc7
- 2.Sf4#
- 1...Se7
- 2.Sf4#
- 1...e3
- 2.Qxd5#
- 1...Sc3!
- 1...Sxh3
- 1.Bf6?
- 1...Sxh3
- 2.Qxe2#
- 1...gxh2
- 2.Sf2#
- 1...e1Q
- 2.Qxc2#
- 1...e1S
- 2.Qd2#
- 1...e1B
- 2.Bxc2#
- 2.Qxc2#
- 1...e1R
- 2.Qxc2#
- 2.Qd2#
- 1...Sc3
- 2.Sf4#
- 1...Sf3
- 2.Qxe2#
- 1...Se3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sc7
- 2.Sf4#
- 1...Se7
- 2.Sf4#
- 1...e3
- 2.Qxd5#
- 1...Sxf6!
- 1...Sxh3
- 1.Bg7?
- 1...Sxh3
- 2.Qxe2#
- 1...gxh2
- 2.Sf2#
- 1...e1Q
- 2.Qxc2#
- 1...e1S
- 2.Qd2#
- 1...e1B
- 2.Bxc2#
- 2.Qxc2#
- 1...e1R
- 2.Qxc2#
- 2.Qd2#
- 1...Sc3
- 2.Sf4#
- 1...Sf3
- 2.Qxe2#
- 1...Se3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sc7
- 2.Sf4#
- 1...Se7
- 2.Sf4#
- 1...e3
- 2.Qxd5#
- 1...Sf6!
- 1...Sxh3
- 1.Bh8?
- 1...Sxh3
- 2.Qxe2#
- 1...gxh2
- 2.Sf2#
- 1...e1Q
- 2.Qxc2#
- 1...e1S
- 2.Qd2#
- 1...e1B
- 2.Bxc2#
- 2.Qxc2#
- 1...e1R
- 2.Qxc2#
- 2.Qd2#
- 1...Sc3
- 2.Sf4#
- 1...Sf3
- 2.Qxe2#
- 1...Se3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sc7
- 2.Sf4#
- 1...Se7
- 2.Sf4#
- 1...e3
- 2.Qxd5#
- 1...Sf6!
- 1...Sxh3
- 1.Qxg1?
- 1...gxh2
- 2.Sf2#
- 1...e1Q
- 2.Sb2#
- 1...e1S
- 2.Sb2#
- 2.Rd2#
- 2.Qf1#
- 1...e1B
- 2.Sb2#
- 2.Bxc2#
- 2.Qf1#
- 1...e1R
- 2.Sb2#
- 2.Rd2#
- 1...Sc3
- 2.Sf4#
- 2.Qe3#
- 1...Se3
- 2.Sf4#
- 2.Qxe3#
- 1...Sb4
- 2.Sf4#
- 2.Qe3#
- 1...Sf4
- 2.Sxf4#
- 2.Qe3#
- 1...Sb6
- 2.Sf4#
- 2.Qe3#
- 1...Sf6
- 2.Sf4#
- 2.Qe3#
- 1...Sc7
- 2.Sf4#
- 2.Qe3#
- 1...Se7
- 2.Sf4#
- 2.Qe3#
- 1...g2
- 2.Sf2#
- 1...e3!
- 1...gxh2
- 1.Qxg3+?
- 1...Sf3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 2.Sf4#
- 2.Qxe3#
- 1...e3
- 2.Sf2#
- 2.Qg6#
- 1...hxg3!
- 1...Sf3
- 1.Bb2?
- Keys
- 1.Qf1!
- 1...Sxh3
- 2.Qxe2#
- 1...exf1Q
- 2.Rd2#
- 1...exf1S
- 2.Bxc2#
- 1...exf1B
- 2.Bxc2#
- 2.Rd2#
- 1...exf1R
- 2.Rd2#
- 1...gxh2
- 2.Sf2#
- 1...e3
- 2.Qf5#
- 1...Sc3
- 2.Sf4#
- 1...Sf3
- 2.Qxe2#
- 1...Se3
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sb6
- 2.Sf4#
- 1...Sf6
- 2.Sf4#
- 1...Sc7
- 2.Sf4#
- 1...Se7
- 2.Sf4#
- 1...g2
- 2.Sf2#
- 1...Sxh3
- 1.Qf1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- S(a);N_GUARD::QAB1(C),XP(c)
- S(a);N_GUARD,XS(F)::QAB1(C),XP(c)
- S(i);N_GUARD::S(F)
- S(i);N_GUARD::S(F),XS(i)
- P(c);OGATE,P_PINB(B)::QAB1(C),XR(b)
- P(c);OGATE::QAR1(C)
- P(e);N_GUARD,XR(D)::S(F)
- P(f);OGATE::QAR2(C),XS(i)
- Tries
- Try
- B(H);
- Vars
- S(a);N_GUARD,XS(F)::QAB1(C),XP(c)
- P(e);N_GUARD,XR(D)::S(F)
- P(c);OGATE,P_PINB(B)::QAB1(C),XR(b)
- P(c);OGATE::QAR1(C)
- S(a);N_GUARD::QAB1(C),XP(c)
- S(i);N_GUARD::S(F)
- S(i);N_GUARD::S(F),XS(i)
- P(f);OGATE::QAR2(C),XS(i)
- Refutation
- S(i);
- Try
- B(H);
- Vars
- S(a);N_GUARD,XS(F)::QAB1(C),XP(c)
- P(e);N_GUARD,XR(D)::S(F)
- P(c);OGATE,P_PINB(B)::QAB1(C),XR(b)
- P(c);OGATE::QAR1(C)
- S(i);N_GUARD::S(F)
- S(a);N_GUARD::QAB1(C),XP(c)
- S(i);N_GUARD::S(F),XS(i)
- P(f);OGATE::QAR2(C),XS(i)
- Refutation
- S(i);XB(H)
- Try
- B(H);
- Vars
- S(a);N_GUARD,XS(F)::QAB1(C),XP(c)
- P(e);N_GUARD,XR(D)::S(F)
- P(c);OGATE,P_PINB(B)::QAB1(C),XR(b)
- P(c);OGATE::QAR1(C)
- S(i);N_GUARD::S(F)
- S(a);N_GUARD::QAB1(C),XP(c)
- S(i);N_GUARD::S(F),XS(i)
- P(f);OGATE::QAR2(C),XS(i)
- Refutation
- S(i);
- Try
- B(H);
- Vars
- S(a);N_GUARD,XS(F)::QAB1(C),XP(c)
- P(e);N_GUARD,XR(D)::S(F)
- P(c);OGATE,P_PINB(B)::QAB1(C),XR(b)
- P(c);OGATE::QAR1(C)
- S(i);N_GUARD::S(F)
- S(a);N_GUARD::QAB1(C),XP(c)
- S(i);N_GUARD::S(F),XS(i)
- P(f);OGATE::QAR2(C),XS(i)
- Refutation
- S(i);
- Try
- Q(C);XS(a)
- Vars
- P(e);N_GUARD,XR(D)::S(F)
- P(c);P_PINB(B)::S(G)
- P(e);N_GUARD::S(F)
- Refutation
- P(f);
- Try
- Q(C);CHECK,XP(e)
- Vars
- S(a);P_SPINS(a)::S(F)
- Refutation
- P(g);XQ(C)
- Try
- Actual
- Q(C);P_PINP(c)
- Vars
- S(a);N_GUARD,XS(F)::QAB1(C),XP(c)
- P(c);N_SPINP(c),OGATE,P_PINB(B),XQ(C)::R1(D)
- P(c);N_SPINP(c),XQ(C)::B(B),XR(b)
- P(e);N_GUARD,XR(D)::S(F)
- P(f);OGATEB::QAB(C)
- S(i);N_GUARD::S(F)
- S(a);N_GUARD::QAB1(C),XP(c)
- S(i);N_GUARD::S(F),XS(i)
- P(e);N_GUARD::S(F)
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).