MESON Chess Problem Database
Problem Display
PID: 12094 (3n1K2/2N5/3n4/2ppp3/Q1bkB3/BP4NR/1pR2P2/1r6 w - - 0 1)
Fenner, A Jack
Gooderson, Arthur R
The Problemist, 1974
#2
10 + 9
| 3207 | A R Gooderson An English Progressive | 1996 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Bxb2#
- 1...Rc1
- 2.Bxb2#
- 1...Rd1
- 2.Bxb2#
- 1...Re1
- 2.Bxb2#
- 1...Rf1
- 2.Bxb2#
- 1...Rg1
- 2.Bxb2#
- 1...Rh1
- 2.Bxb2#
- 1...Sxe4
- 2.Se2#
- 2.Sf5#
- 1...Sb5
- 2.Sxb5#
- 1...Sf5
- 2.Sb5#
- 1...S6b7
- 2.Sb5#
- 1...S6f7
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...Sc6
- 2.Se6#
- 1...Se6+
- 2.Sxe6#
- 1...S8b7
- 2.Se6#
- 1...S8f7
- 2.Se6#
- 1...dxe4
- 2.Se2#
- 1...Ra1
- Tries
- 1.Kg8?
- 1...Sxe4
- 2.Se2#
- 2.Sf5#
- 1...Ra1
- 2.Bxb2#
- 1...Rc1
- 2.Bxb2#
- 1...Rd1
- 2.Bxb2#
- 1...Re1
- 2.Bxb2#
- 1...Rf1
- 2.Bxb2#
- 1...Rg1
- 2.Bxb2#
- 1...Rh1
- 2.Bxb2#
- 1...Sb5
- 2.Sxb5#
- 1...Sf5
- 2.Sb5#
- 1...S6b7
- 2.Sb5#
- 1...S6f7
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...Sc6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...S8b7
- 2.Se6#
- 1...S8f7
- 2.Se6#
- 1...dxe4+!
- 1...Sxe4
- 1.Sxd5?
- threat
- 2.Rd2#
- 1...Sxe4
- 2.Qxc4#
- 1...Rd1
- 2.Bxb2#
- 1...Se6+!
- threat
- 1.Rxc4+?
- 1...Sxc4
- 2.Sb5#
- 1...dxc4!
- 1...Sxc4
- 1.Rh6?
- 1...Se6+
- 2.Sxe6#
- 1...dxe4
- 2.Rxd6#
- 1...Ra1
- 2.Bxb2#
- 1...Rc1
- 2.Bxb2#
- 1...Rd1
- 2.Bxb2#
- 1...Re1
- 2.Bxb2#
- 1...Rf1
- 2.Bxb2#
- 1...Rg1
- 2.Bxb2#
- 1...Rh1
- 2.Bxb2#
- 1...Sb5
- 2.Sxb5#
- 1...Sf5
- 2.Sb5#
- 1...S6b7
- 2.Sb5#
- 1...S6f7
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...Sc6
- 2.Se6#
- 1...S8b7
- 2.Se6#
- 1...S8f7
- 2.Se6#
- 1...Sxe4!
- 1...Se6+
- 1.Qb4?
- threat
- 2.Rd2#
- 2.Qc3#
- 2.Qxc5#
- 1...Se6+
- 2.Sxe6#
- 1...Sxe4
- 2.Se2#
- 2.Sf5#
- 1...dxe4
- 2.Se2#
- 2.Rd2#
- 2.Qc3#
- 1...Rd1
- 2.Bxb2#
- 2.Qc3#
- 2.Qxc5#
- 1...Sb5
- 2.Sxb5#
- 2.Rd2#
- 2.Qxc5#
- 1...S6b7
- 2.Sb5#
- 2.Rd2#
- 2.Qc3#
- 1...S8b7
- 2.Se6#
- 2.Rd2#
- 2.Qc3#
- 1...cxb4!
- threat
- 1.Qxc4+?
- 1...Sxc4
- 2.Sb5#
- 1...dxc4!
- 1...Sxc4
- 1.Qa5?
- threat
- 2.Bxc5#
- 2.Qc3#
- 2.Qxc5#
- 1...Se6+
- 2.Sxe6#
- 1...Sxe4
- 2.Sf5#
- 1...dxe4
- 2.Qc3#
- 1...Bb5
- 2.Bxc5#
- 2.Qc3#
- 1...S6b7
- 2.Qc3#
- 1...S8b7
- 2.Se6#
- 2.Qc3#
- 1...Sb5!
- threat
- 1.bxc4?
- 1...Se6+
- 2.Sxe6#
- 1...Sxc4
- 2.Sb5#
- 1...Sxe4
- 2.Se2#
- 2.Sf5#
- 1...dxe4
- 2.Se2#
- 1...Sb5
- 2.Sxb5#
- 1...Ra1
- 2.Bxb2#
- 1...Rc1
- 2.Bxb2#
- 1...Rd1
- 2.Bxb2#
- 1...Re1
- 2.Bxb2#
- 1...Rf1
- 2.Bxb2#
- 1...Rg1
- 2.Bxb2#
- 1...Rh1
- 2.Bxb2#
- 1...Sf5
- 2.Sb5#
- 1...S6b7
- 2.Sb5#
- 1...S6f7
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...Sc6
- 2.Se6#
- 1...S8b7
- 2.Se6#
- 1...S8f7
- 2.Se6#
- 1...dxc4!
- 1...Se6+
- 1.Kg8?
- Keys
- 1.Qd7!
- 1...Se6+
- 2.Sxe6#
- 1...Bxb3
- 2.Bxc5#
- 1...Sxe4
- 2.Sf5#
- 1...dxe4
- 2.Sf5#
- 1...Ra1
- 2.Bxb2#
- 1...Rc1
- 2.Bxb2#
- 1...Rd1
- 2.Bxb2#
- 1...Re1
- 2.Bxb2#
- 1...Rf1
- 2.Bxb2#
- 1...Rg1
- 2.Bxb2#
- 1...Rh1
- 2.Bxb2#
- 1...Bf1
- 2.Bxc5#
- 1...Be2
- 2.Bxc5#
- 1...Bd3
- 2.Bxc5#
- 1...Bb5
- 2.Bxc5#
- 1...Ba6
- 2.Bxc5#
- 1...Sb5
- 2.Rxc4#
- 1...Sf5
- 2.Rxc4#
- 1...S6b7
- 2.Rxc4#
- 1...S6f7
- 2.Rxc4#
- 1...Sc8
- 2.Rxc4#
- 1...Se8
- 2.Rxc4#
- 1...Sc6
- 2.Se6#
- 1...S8b7
- 2.Se6#
- 1...S8f7
- 2.Se6#
- 1...Se6+
- 1.Qd7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::B(C),XP(b)
- R(a);N_GUARD,P_PINP(B)::B(C),XP(b)
- S(h);N_GUARD::S(I),XS(h)
- S(h);N_GUARD::S(I)
- S(i);N_GUARD::S(I)
- S(i);CHECK,N_GUARD::S(I),XS(i)
- P(f);SBLOCK,XB(H)::S(E)
- Tries
- Try
- K(J);P-FLIGHT
- Vars
- R(a);N_GUARD::B(C),XP(b)
- R(a);N_GUARD,P_PINS(E)::B(C),XP(b)
- S(h);N_GUARD::S(I),XS(h)
- S(h);N_GUARD::S(I)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- Refutation
- P(f);CHECK,XB(H)
- Try
- S(I);XP(f)
- Threat
- R(A)
- Vars
- S(h);N_GUARD,XB(H)::QAR1(G),XB(c)
- R(a);N_GUARD::B(C),XP(b)
- Refutation
- S(i);CHECK
- Try
- R(A);CHECK,XB(c)
- Vars
- S(h);P_SPINS(h),XR(A)::S(I)
- Refutation
- P(f);P_SPINP(f),XR(A)
- Try
- R(F);
- Vars
- S(i);CHECK,N_GUARD::S(I),XS(i)
- P(f);OGATEB,XB(H)::R(F),XS(h)
- R(a);N_GUARD::B(C),XP(b)
- R(a);N_GUARD,P_PINP(B)::B(C),XP(b)
- S(h);N_GUARD::S(I),XS(h)
- S(h);N_GUARD::S(I)
- S(i);N_GUARD::S(I)
- Refutation
- S(h);XB(H)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- S(i);CHECK,N_GUARD::S(I),XS(i)
- Refutation
- P(e);N_SPINB(c),XQ(G)
- Try
- Q(G);CHECK,XB(c)
- Vars
- S(h);XQ(G)::S(I)
- Refutation
- P(f);XQ(G)
- Try
- Q(G);N_PINB(c)
- Threat
- DUALS(3)
- Vars
- S(i);CHECK,N_GUARD::S(I),XS(i)
- S(h);N_GUARD,SBLOCK,XB(H)::S(E)
- P(f);XB(H)::QAB1(G)
- S(h);::QAB1(G)
- Refutation
- S(h);
- Try
- P(D);XB(c)
- Vars
- S(i);CHECK,N_GUARD::S(I),XS(i)
- S(h);N_GUARD,P_SPINS(h),XP(D)::S(I)
- P(f);SBLOCK,XB(H)::S(E)
- S(h);N_GUARD::S(I),XS(h)
- R(a);N_GUARD::B(C),XP(b)
- R(a);N_GUARD,P_PINP(B)::B(C),XP(b)
- S(h);N_GUARD::S(I)
- S(i);N_GUARD::S(I)
- Refutation
- P(f);P_SPINP(f),XP(D)
- Try
- Actual
- Q(G);N_PINB(c)
- Vars
- S(i);CHECK,N_GUARD::S(I),XS(i)
- B(c);XP(D)::B(C),XP(e)
- S(h);N_GUARD,P_SPINP(f),SBLOCK,XB(H)::S(E)
- P(f);P_SPINS(h),SBLOCK,XB(H)::S(E)
- R(a);N_GUARD::B(C),XP(b)
- R(a);N_GUARD,P_PINP(B)::B(C),XP(b)
- B(c);::B(C),XP(e)
- S(h);N_GUARD,P_SPINP(f)::R1(A),XB(c)
- S(i);N_GUARD::S(I)
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).