MESON Chess Problem Database
Problem Display
PID: 55920 (8/3pN3/1K1PR2Q/5p1r/3k2rb/1P6/3BP1Bp/6qn w - - 0 1)
Rietveld, Johannes Jacob
1st Prize, Brisbane Courier, 1913
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Qe3
- 2.Qxe3#
- 1...Qa1
- 2.Qe3#
- 1...Qb1
- 2.Qe3#
- 1...Qc1
- 2.Qe3#
- 1...Qd1
- 2.Qe3#
- 1...Qe1
- 2.Qe3#
- 1...Qf1
- 2.Qe3#
- 1...Qxg2
- 2.Qe3#
- 1...Rxg2
- 2.Qf4#
- 1...Rg3
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rgg5
- 2.Qf6#
- 1...Rg6
- 2.Qf4#
- 1...Rg7
- 2.Qf4#
- 1...Rg8
- 2.Qf4#
- 1...Rhg5
- 2.Qf6#
- 1...Rxh6
- 2.Sxf5#
- 1...Be1
- 2.Qf6#
- 1...Bf2
- 2.Qf6#
- 1...Bg5
- 2.Sxf5#
- 1...Bf6
- 2.Qxf6#
- 1...Sf2
- 2.Qe3#
- 1...f4
- 2.Re4#
- 1...dxe6
- 2.Sc6#
- 1...Qe3
- Tries
- 1.Be3+?
- 1...Qxe3
- 2.Qxe3#
- 1...Kc3!
- 1...Qxe3
- 1.Bb4?
- threat
- 2.Qd2#
- 1...Rxh6
- 2.Sxf5#
- 1...dxe6
- 2.Sc6#
- 1...Qe3
- 2.Qxe3#
- 1...Qb1
- 2.Qe3#
- 1...Qd1
- 2.Qe3#
- 1...Qe1
- 2.Qe3#
- 1...Rg3
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rgg5
- 2.Qf6#
- 1...Rhg5
- 2.Qf6#
- 1...Be1
- 2.Qf6#
- 1...Bg5
- 2.Sxf5#
- 1...Sf2
- 2.Qe3#
- 1...f4
- 2.Re4#
- 1...Qc1!
- threat
- 1.Ba5?
- threat
- 2.Qd2#
- 1...Rxh6
- 2.Sxf5#
- 1...dxe6
- 2.Sc6#
- 1...Qe3
- 2.Qxe3#
- 1...Qb1
- 2.Qe3#
- 1...Qd1
- 2.Qe3#
- 1...Qe1
- 2.Qe3#
- 1...Rg3
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rgg5
- 2.Qf6#
- 1...Rhg5
- 2.Qf6#
- 1...Be1
- 2.Qf6#
- 1...Bg5
- 2.Sxf5#
- 1...Sf2
- 2.Qe3#
- 1...f4
- 2.Re4#
- 1...Qc1!
- threat
- 1.Re5?
- threat
- 2.Rd5#
- 1...Qxg2
- 2.Qe3#
- 1...Rxg2
- 2.Qf4#
- 1...f4
- 2.Re4#
- 1...Kxe5+!
- threat
- 1.Qg7+?
- 1...Bf6
- 2.Qxf6#
- 1...Rxg7!
- 1...Bf6
- 1.Qh8+?
- 1...Rxh8
- 2.Sxf5#
- 1...Bf6
- 2.Qxf6#
- 1...Rg7!
- 1...Rxh8
- 1.e3+?
- 1...Qxe3
- 2.Qxe3#
- 1...Kd3!
- 1...Qxe3
- 1.Be3+?
- Keys
- 1.Be1!
- threat
- 2.Qd2#
- 1...Qxe1
- 2.Qe3#
- 1...Rxh6
- 2.Sxf5#
- 1...Bxe1
- 2.Qf6#
- 1...dxe6
- 2.Sc6#
- 1...Qe3
- 2.Qxe3#
- 1...Rg3
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rgg5
- 2.Qf6#
- 1...Rhg5
- 2.Qf6#
- 1...Bg5
- 2.Sxf5#
- 1...Sf2
- 2.Qe3#
- 1...f4
- 2.Re4#
- threat
- 1.Be1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 12
- Sets
- Q(a);N_GUARD::QAB1(H),XQ(a)
- Q(a);N_GUARD::QAB1(H)
- Q(a);N_GUARD,P_PINP(D)::QAB1(H)
- Q(a);N_GUARD,XB(C)::QAB1(H)
- R(e);N_GUARD,XB(C)::QAR2(H)
- R(e);N_GUARD::QAR2(H)
- R(e);N_GUARD::QAR2(H),XR(e)
- R(e);S_CUTB(f)::QAB(H)
- R(h);S_CUTB(f)::QAB(H)
- R(h);N_GUARD,XQ(H)::S(I),XP(g)
- B(f);N_GUARD::QAB(H)
- B(f);S_CUTR(h)::S(I),XP(g)
- B(f);N_GUARD::QAB(H),XB(f)
- S(b);S_CUTQ(a)::QAB1(H)
- P(g);N_GUARD,S_CUTR(e)::R1(G)
- P(i);N_GUARD,XR(G)::S(I)
- Tries
- Try
- B(A);CHECK
- Vars
- Q(a);OGATE,XB(A)::QAB1(H),XQ(a)
- Refutation
- K(d);P_PINB(A),S_FLIGHT
- Try
- B(A);
- Threat
- QAR2(H)
- Vars
- R(h);N_GUARD,XQ(H)::S(I),XP(g)
- P(i);N_GUARD,XR(G)::S(I)
- Q(a);N_GUARD::QAB1(H),XQ(a)
- Q(a);N_GUARD::QAB1(H)
- R(e);N_GUARD::QAR2(H)
- R(e);N_GUARD::QAR2(H),XR(e)
- R(e);S_CUTB(f)::QAB(H)
- R(h);S_CUTB(f)::QAB(H)
- B(f);N_GUARD::QAB(H)
- B(f);S_CUTR(h)::S(I),XP(g)
- S(b);S_CUTQ(a)::QAB1(H)
- P(g);N_GUARD,S_CUTR(e)::R1(G)
- Refutation
- Q(a);
- Try
- B(A);
- Threat
- QAR2(H)
- Vars
- R(h);N_GUARD,XQ(H)::S(I),XP(g)
- P(i);N_GUARD,XR(G)::S(I)
- Q(a);N_GUARD::QAB1(H),XQ(a)
- Q(a);N_GUARD,P_PINP(D)::QAB1(H)
- Q(a);N_GUARD::QAB1(H)
- R(e);N_GUARD::QAR2(H)
- R(e);N_GUARD::QAR2(H),XR(e)
- R(e);S_CUTB(f)::QAB(H)
- R(h);S_CUTB(f)::QAB(H)
- B(f);N_GUARD::QAB(H)
- B(f);S_CUTR(h)::S(I),XP(g)
- S(b);S_CUTQ(a)::QAB1(H)
- P(g);N_GUARD,S_CUTR(e)::R1(G)
- Refutation
- Q(a);
- Try
- R(G);
- Threat
- R1(G)
- Vars
- Q(a);N_GUARD,XB(C)::QAB1(H)
- R(e);N_GUARD,XB(C)::QAR2(H)
- P(g);N_GUARD,S_CUTR(e)::R1(G)
- Refutation
- K(d);CHECK,S_FLIGHT,XR(G)
- Try
- Q(H);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAB(H),XB(f)
- Refutation
- R(e);XQ(H)
- Try
- Q(H);CHECK
- Vars
- R(h);XQ(H)::S(I),XP(g)
- B(f);N_GUARD,P_SPINB(f)::QAB(H),XB(f)
- Refutation
- R(e);P_SPINR(e)
- Try
- P(B);CHECK
- Vars
- Q(a);OGATE,XP(B)::QAB1(H),XQ(a)
- Refutation
- K(d);P-FLIGHT,P_PINP(B)
- Try
- Actual
- B(A);
- Threat
- QAR2(H)
- Vars
- Q(a);N_GUARD,XB(A)::QAB1(H)
- R(h);N_GUARD,XQ(H)::S(I),XP(g)
- B(f);N_GUARD,XB(A)::QAB(H)
- P(i);N_GUARD,XR(G)::S(I)
- Q(a);N_GUARD::QAB1(H),XQ(a)
- R(e);N_GUARD::QAR2(H)
- R(e);N_GUARD::QAR2(H),XR(e)
- R(e);S_CUTB(f)::QAB(H)
- R(h);S_CUTB(f)::QAB(H)
- B(f);S_CUTR(h)::S(I),XP(g)
- S(b);S_CUTQ(a)::QAB1(H)
- P(g);N_GUARD,S_CUTR(e)::R1(G)
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).