MESON Chess Problem Database
Problem Display
PID: 24106 (4K3/4BNQp/1pN3b1/n5R1/2k4r/3RpB2/P1P1n3/4b3 w - - 0 1)
Nanning, Frederik Willem
3rd HM., Els Escacs a Catalunya, 1933
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Bxd3
- 2.Sd6#
- 1...Be4
- 2.Sd6#
- 1...Bxf7+
- 2.Qxf7#
- 1...Sf4
- 2.Qd4#
- 1...Sb3
- 2.axb3#
- 1...b5
- 2.Se5#
- 2.Bd5#
- 2.Rc5#
- 1...Bxd3
- Tries
- 1.Bxe2?
- threat
- 2.Rc3#
- 1...Bxf7+
- 2.Qxf7#
- 1...Bxd3
- 2.Sd6#
- 2.Bxd3#
- 2.cxd3#
- 1...Rd4
- 2.Qxd4#
- 1...Bc3
- 2.Rxc3#
- 2.Rd4#
- 2.Qxc3#
- 1...Bf5!
- threat
- 1.Qb2?
- threat
- 2.Se5#
- 2.Bd5#
- 2.Qb5#
- 1...Bxd3
- 2.Sce5#
- 2.Sfe5#
- 2.Sd6#
- 2.Bd5#
- 1...Sxc6
- 2.Bd5#
- 2.Qb3#
- 2.Qb5#
- 1...Rd4
- 2.Se5#
- 2.Qb5#
- 1...Re4
- 2.Qb5#
- 1...Bc3
- 2.Bd5#
- 2.Qb5#
- 1...Bg3
- 2.Bd5#
- 2.Qb4#
- 2.Qb5#
- 1...Bb4
- 2.Qxb4#
- 1...Be4
- 2.Sce5#
- 2.Sfe5#
- 2.Sd6#
- 2.Qb5#
- 1...Bf5
- 2.Sce5#
- 2.Sfe5#
- 2.Bd5#
- 1...Sc3
- 2.Se5#
- 2.Qb4#
- 1...Sd4
- 2.Se5#
- 2.Bd5#
- 1...Sf4
- 2.Se5#
- 2.Rd4#
- 2.Qd4#
- 2.Qb5#
- 1...Sb3
- 2.Qxb3#
- 2.axb3#
- 1...b5
- 2.Se5#
- 2.Bd5#
- 2.Rc5#
- 2.Qxb5#
- 1...Bxf7+!
- threat
- 1.Qxg6?
- threat
- 2.Sd6#
- 2.Qe6#
- 1...Sxc6
- 2.Qxc6#
- 2.Qe6#
- 1...hxg6
- 2.Sd6#
- 1...Re4
- 2.Sd6#
- 1...Rh6
- 2.Sd6#
- 1...Bg3
- 2.Qe6#
- 1...Bb4
- 2.Qe6#
- 1...Sc3
- 2.Sd6#
- 1...Sd4
- 2.Sd6#
- 1...Sf4
- 2.Sd6#
- 2.Qe4#
- 1...Sb7
- 2.Qe6#
- 1...Rd4!
- threat
- 1.a4?
- threat
- 2.Se5#
- 2.Bd5#
- 1...Bxf7+
- 2.Qxf7#
- 1...Bxd3
- 2.Sd6#
- 2.Bd5#
- 1...Sxc6
- 2.Bd5#
- 1...Rd4
- 2.Se5#
- 1...Bc3
- 2.Bd5#
- 1...Bg3
- 2.Bd5#
- 1...Be4
- 2.Sce5#
- 2.Sfe5#
- 2.Sd6#
- 1...Sc3
- 2.Se5#
- 1...Sf4
- 2.Se5#
- 2.Qd4#
- 1...Re4!
- threat
- 1.Bxe2?
- Keys
- 1.Rb3!
- threat
- 2.Bd5#
- 1...Bxf7+
- 2.Qxf7#
- 1...Sxb3
- 2.axb3#
- 1...Rd4
- 2.Se5#
- 1...Re4
- 2.Bxe2#
- 1...Bb4
- 2.Rxb4#
- 1...Be4
- 2.Sd6#
- 1...Bf5
- 2.Sfe5#
- 1...Sc3
- 2.Rb4#
- 1...Sf4
- 2.Qd4#
- threat
- 1.Rb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- B(h);N_PINS(H),XR(C)::S(H)
- B(h);N_PINS(H)::S(H)
- B(h);CHECK,OGATE,XS(H)::QAB(I),XB(h)
- S(b);N_GUARD,S_CUTR(e)::QAR1(I)
- S(f);OGATE::P(A),XS(f)
- Tries
- Try
- B(D);XS(b)
- Threat
- B(D)+R(C),DCHECK
- Vars
- B(h);CHECK,OGATE,XS(H)::QAB(I),XB(h)
- R(e);N_GUARD::QAR1(I),XR(e)
- Refutation
- B(h);N_PINS(H)
- Try
- Q(I);
- Threat
- DUALS(3)
- Vars
- R(e);P_PINB(G)::QAB1(I)
- B(a);N_GUARD::QAR1(I),XB(a)
- Refutation
- B(h);CHECK,XS(H)
- Try
- Q(I);N_SPINS(H),XB(h)
- Threat
- DUALS(2)
- Vars
- P(i);XQ(I)::S(H)
- R(e);P_PINB(G)::S(H)
- R(e);::S(H)
- B(a);::QAB(I)
- S(b);::S(H)
- S(f);::QAB(I)
- Refutation
- R(e);
- Try
- P(A);
- Threat
- DUALS(2)
- Vars
- B(h);CHECK,OGATE,XS(H)::QAB(I),XB(h)
- S(f);XS(F)::B(D)
- R(e);::S(F)
- B(a);::B(D)
- S(b);::S(F)
- Refutation
- R(e);P_PINB(G)
- Try
- Actual
- R(C);
- Threat
- B(D)
- Vars
- B(h);CHECK,OGATE,XS(H)::QAB(I),XB(h)
- S(f);OGATE,XR(C)::P(A),XS(f)
- R(e);SBLOCK::S(F)
- R(e);P_PINB(G),S_CUTB(h)::B(D),XS(b)
- B(a);N_GUARD::R1(C),XB(a)
- B(h);N_PINS(H)::S(H)
- S(b);S_CUTB(a)::R1(C)
- S(b);N_GUARD,S_CUTR(e)::QAR1(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).