MESON Chess Problem Database
Problem Display
PID: 12128 (B7/2rpp2p/1Nr5/p3P1Q1/Rq2k1b1/1P1pN3/2PR1PPn/B1K3b1 w - - 0 1)
Knuppert, Hugo
1st Prize, KeyStip 14. Ty., 1975
#2
13 + 12
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.Rxc4#
- 1...Qd4
- 2.Rxd4#
- 1...Bd1
- 2.Qf5#
- 1...Be2
- 2.Qf5#
- 1...Bf3
- 2.Qf5#
- 1...Bf5
- 2.Qxf5#
- 1...Bh5
- 2.Qf5#
- 1...Sf1
- 2.Qxg4#
- 1...Sf3
- 2.Qxg4#
- 1...Qc4
- Tries
- 1.Kb1?
- threat
- 2.cxd3#
- 1...Be2
- 2.Qf5#
- 1...dxc2+!
- threat
- 1.Sf1?
- threat
- 2.Sg3#
- 1...Sxf1
- 2.Qxg4#
- 1...Bxf2!
- threat
- 1.Sec4?
- threat
- 2.cxd3#
- 1...Qxd2+
- 2.Sxd2#
- 1...Qa3+
- 2.Sxa3#
- 1...Qxb3
- 2.Sd6#
- 1...Qxc4
- 2.Rxc4#
- 1...Qxb6
- 2.Sxb6#
- 1...dxc2
- 2.Rd4#
- 1...Qc3
- 2.Sd6#
- 1...Qd6
- 2.Sxd6#
- 1...Be2!
- threat
- 1.Sed5?
- threat
- 2.Qf4#
- 1...Rf6
- 2.Sxf6#
- 1...Rxc2+!
- threat
- 1.Sf5?
- threat
- 2.Sg3#
- 1...Bxf5
- 2.Qe3#
- 1...Sf1
- 2.Qxg4#
- 1...Bxf2!
- threat
- 1.Sbd5?
- threat
- 2.Qf4#
- 1...Rf6
- 2.Sxf6#
- 1...Rxc2+!
- threat
- 1.Bc3?
- threat
- 2.cxd3#
- 1...Be2
- 2.Qf5#
- 1...dxc2!
- threat
- 1.Bxc6+?
- 1...dxc6
- 2.cxd3#
- 1...d5
- 2.Bxd5#
- 2.cxd3#
- 1...Rxc6!
- 1...dxc6
- 1.Qg6+?
- 1...Kf4
- 2.Sed5#
- 2.Sbd5#
- 1...Bf5
- 2.Qxf5#
- 1...hxg6!
- 1...Kf4
- 1.e6?
- threat
- 2.Qe5#
- 1...Qd4
- 2.Rxd4#
- 1...Bf5
- 2.Qxf5#
- 1...Sf3
- 2.Qxg4#
- 1...d6!
- threat
- 1.Kb1?
- Keys
- 1.Sbc4!
- threat
- 2.cxd3#
- 1...Qxd2+
- 2.Sxd2#
- 1...Qa3+
- 2.Sxa3#
- 1...Qxb3
- 2.Sd6#
- 1...Qxc4
- 2.Rxc4#
- 1...dxc2
- 2.Rd4#
- 1...Qc3
- 2.Sd6#
- 1...Qd6
- 2.Sxd6#
- 1...Be2
- 2.Qf5#
- threat
- 1.Sbc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 7
- Sets
- Q(d);OGATE::R(I),XQ(d)
- Q(d);OGATE::R1(I),XQ(d)
- B(f);N_GUARD::QAB1(K)
- B(f);N_GUARD::QAB1(K),XB(f)
- S(b);N_GUARD::QAR2(K),XB(f)
- Tries
- Try
- K(B);N_SPINP(C),P-FLIGHT,P_SPINP(G)
- Threat
- P(C),XP(c)
- Vars
- B(f);N_GUARD::QAB1(K)
- Refutation
- P(c);CHECK,XP(C)
- Try
- S(H);
- Threat
- S(H)
- Vars
- S(b);N_GUARD,XS(H)::QAR2(K),XB(f)
- Refutation
- B(a);XP(E)
- Try
- S(H);N_PINQ(d),N_SPINP(C)
- Threat
- P(C),XP(c)
- Vars
- Q(d);CHECK,XR(D)::R(I)+S(H),DCHECK,XQ(d)
- Q(d);CHECK::R(I)+S(H),XQ(d)
- Q(d);XP(G)::R(I)+S(H),DCHECK
- Q(d);OGATE,P_PINP(C),P_SPINQ(d),XS(H)::R(I),XQ(d)
- Q(d);XS(L)::R(I)+S(H),XQ(d)
- P(c);OGATE,XP(C)::R1(D)
- Q(d);P_PINP(C)::R(I)+S(H),DCHECK
- Q(d);::R(I)+S(H),DCHECK,XQ(d)
- Refutation
- B(f);
- Try
- S(H);N_PINR(h)
- Threat
- QAR1(K)
- Vars
- R(h);::B(M)+S(H),DCHECK,XR(h)
- Refutation
- R(h);CHECK,XP(C)
- Try
- S(H);
- Threat
- S(H)
- Vars
- B(f);SBLOCK,XS(H)::QAR1(K)
- S(b);N_GUARD::QAR2(K),XB(f)
- Refutation
- B(a);XP(E)
- Try
- S(L);N_PINR(h)
- Threat
- QAR1(K)
- Vars
- R(h);::B(M)+S(L),DCHECK,XR(h)
- Refutation
- R(h);CHECK,XP(C)
- Try
- B(A);N_SPINP(C)
- Threat
- P(C),XP(c)
- Vars
- B(f);N_GUARD::QAB1(K)
- Refutation
- P(c);XP(C)
- Try
- B(M);CHECK,N_SPINP(C),XR(h)
- Vars
- P(j);XB(M)::P(C),XP(c)
- Refutation
- R(i);P_PINP(C),XB(M)
- Try
- Q(K);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAB1(K),XB(f)
- Refutation
- P(l);XQ(K)
- Try
- P(J);
- Threat
- QAR1(K)
- Vars
- Q(d);OGATE::R1(I),XQ(d)
- B(f);N_GUARD::QAB1(K),XB(f)
- S(b);N_GUARD::QAR2(K),XB(f)
- Refutation
- P(j);
- Try
- Actual
- S(L);N_PINQ(d),N_SPINP(C)
- Threat
- P(C),XP(c)
- Vars
- Q(d);CHECK,XR(D)::R(I)+S(L),DCHECK,XQ(d)
- Q(d);CHECK::R(I)+S(L),XQ(d)
- Q(d);XP(G)::R(I)+S(L),DCHECK
- Q(d);OGATE,P_PINP(C),P_SPINQ(d),XS(L)::R(I),XQ(d)
- P(c);OGATE,XP(C)::R1(D)
- Q(d);P_PINP(C)::R(I)+S(L),DCHECK
- Q(d);::R(I)+S(L),DCHECK,XQ(d)
- B(f);N_GUARD::QAB1(K)
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).