MESON Chess Problem Database
Problem Display
PID: 239495 (4Q3/2p2p1q/1BR3r1/N2kPP2/K1p3N1/2P2P2/B6p/3r1bb1 w - - 0 1)
Haring, Jacobus
Magyar Sakkelet, 1959
#2
11 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rd3
- 2.Bxc4#
- 1...Rd4
- 2.Rc5#
- 1...Rg5
- 2.Sf6#
- 2.Qd7#
- 2.Qd8#
- 1...Rxc6
- 2.Qxc6#
- 1...Rf6
- 2.Sxf6#
- 1...Rg7
- 2.Sf6#
- 2.Qd7#
- 2.Qd8#
- 1...Rg8
- 2.Sf6#
- 2.Qd7#
- 1...Bg2
- 2.Bxc4#
- 1...Bh3
- 2.Bxc4#
- 1...Be3
- 2.Sxe3#
- 1...Bc5
- 2.Rxc5#
- 1...f6
- 2.Qe6#
- 1...Rd3
- Tries
- 1.Bf2?
- threat
- 2.Se3#
- 2.Rc5#
- 1...Rxg4
- 2.Rc5#
- 1...Rxc6
- 2.Qxc6#
- 1...Qh6
- 2.Rc5#
- 1...Re1
- 2.Rc5#
- 1...Rd3
- 2.Bxc4#
- 2.Rc5#
- 1...Rd4
- 2.Se3#
- 1...Re6
- 2.Rc5#
- 1...Bxf2!
- threat
- 1.Be3?
- threat
- 2.Rc5#
- 1...Rxc6
- 2.Qxc6#
- 1...Bxe3
- 2.Sxe3#
- 1...Rd4!
- threat
- 1.Rd6+?
- 1...cxd6
- 2.Qc6#
- 2.Qa8#
- 1...Rxd6!
- 1...cxd6
- 1.Re6?
- threat
- 2.Qc6#
- 2.Qd7#
- 2.Qd8#
- 1...Bxb6
- 2.Qc6#
- 1...cxb6
- 2.Qc6#
- 1...fxe6
- 2.Qc6#
- 1...Qg8
- 2.Qc6#
- 2.Qd7#
- 1...Qh4
- 2.Qc6#
- 2.Qd7#
- 1...Qh8
- 2.Qc6#
- 2.Qd7#
- 1...Rg8
- 2.Sf6#
- 2.Qc6#
- 2.Qd7#
- 1...Bc5
- 2.Qc6#
- 1...c6
- 2.Qxc6#
- 2.Qd7#
- 2.Qd8#
- 1...f6
- 2.Qc6#
- 1...Rxe6!
- threat
- 1.Rf6?
- threat
- 2.Qc6#
- 2.Qd7#
- 2.Qd8#
- 1...Rxf6
- 2.Sxf6#
- 1...Bxb6
- 2.Qc6#
- 1...cxb6
- 2.Qc6#
- 1...Qg8
- 2.Qc6#
- 2.Qd7#
- 1...Qh8
- 2.Qc6#
- 2.Qd7#
- 2.Qxf7#
- 1...Rg8
- 2.Qc6#
- 2.Qd7#
- 1...Bc5
- 2.Qc6#
- 1...c6
- 2.Qxc6#
- 2.Qd7#
- 2.Qd8#
- 1...Rxg4!
- threat
- 1.Rxg6?
- threat
- 2.Sf6#
- 2.Qc6#
- 2.Qd7#
- 2.Qd8#
- 1...Bxb6
- 2.Qc6#
- 1...cxb6
- 2.Qc6#
- 1...fxg6
- 2.Sf6#
- 2.Qc6#
- 2.Qe6#
- 1...Qg8
- 2.Sf6#
- 2.Qc6#
- 2.Qd7#
- 1...Qh4
- 2.Qc6#
- 2.Qd7#
- 2.Qxf7#
- 1...Qg7
- 2.Qc6#
- 2.Qd7#
- 2.Qd8#
- 1...Qh8
- 2.Qc6#
- 2.Qd7#
- 2.Qxf7#
- 1...Bc5
- 2.Sf6#
- 2.Qc6#
- 1...c6
- 2.Sf6#
- 2.Rd6#
- 2.Qxc6#
- 2.Qd7#
- 2.Qd8#
- 1...f6
- 2.Sxf6#
- 2.Qc6#
- 2.Qe6#
- 1...Qxg6!
- threat
- 1.Qxf7+?
- 1...Re6
- 2.Qxe6#
- 1...Qxf7!
- 1...Re6
- 1.fxg6?
- threat
- 2.Sf6#
- 2.Qd7#
- 2.Qd8#
- 1...fxg6
- 2.Sf6#
- 2.Qe6#
- 1...Qg8
- 2.Sf6#
- 2.Qd7#
- 1...Qh4
- 2.Qd7#
- 2.Qxf7#
- 1...Qg7
- 2.Qd7#
- 2.Qd8#
- 1...Qh8
- 2.Qd7#
- 2.Qxf7#
- 1...Bc5
- 2.Sf6#
- 2.Rxc5#
- 1...f5
- 2.Sf6#
- 2.Qe6#
- 1...f6
- 2.Sxf6#
- 2.Qe6#
- 1...Qxg6!
- threat
- 1.f6?
- threat
- 2.Qd7#
- 2.Qd8#
- 1...Rxf6
- 2.Sxf6#
- 1...Qg8
- 2.Qd7#
- 1...Qh8
- 2.Qd7#
- 2.Qxf7#
- 1...Rg8
- 2.Qd7#
- 1...Bc5
- 2.Rxc5#
- 1...Rxg4!
- threat
- 1.Bf2?
- Keys
- 1.Sxc4!
- threat
- 2.Sce3#
- 1...Rxg4
- 2.Qd7#
- 1...Bxc4
- 2.Bxc4#
- 1...Rd4
- 2.Rc5#
- 1...Be3
- 2.Scxe3#
- 2.Sgxe3#
- threat
- 1.Sxc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- R(a);S_CUTB(b)::B(A),XP(e)
- R(a);S_CUTB(c)::R1(J)
- R(g);OGATE,XR(J)::QAB1(K),XR(g)
- R(g);N_GUARD::S(E),XR(g)
- B(b);N_GUARD::B(A),XP(e)
- B(c);N_GUARD::S(E),XB(c)
- B(c);N_GUARD::R1(J),XB(c)
- P(i);N_GUARD,S_CUTR(g)::QAB1(K)
- Tries
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- R(g);XS(E)::R1(J)
- R(g);OGATE,XR(J)::QAB1(K),XR(g)
- Q(j);::R1(J)
- R(a);::R1(J)
- R(a);::S(E)
- R(g);::R1(J)
- Refutation
- B(c);XB(I)
- Try
- B(I);
- Threat
- R1(J)
- Vars
- R(g);OGATE,XR(J)::QAB1(K),XR(g)
- B(c);XB(I)::S(E),XB(c)
- Refutation
- R(a);
- Try
- R(J);CHECK
- Refutation
- R(g);XR(J)
- Try
- R(J);
- Threat
- DUALS(3)
- Vars
- B(c);XB(I)::QAB1(K)
- P(h);XB(I)::QAB1(K)
- P(i);XR(J)::QAB1(K)
- B(c);::QAB1(K)
- P(i);::QAB1(K)
- Refutation
- R(g);XR(J)
- Try
- R(J);
- Threat
- DUALS(3)
- Vars
- R(g);XR(J)::S(E),XR(g)
- B(c);XB(I)::QAB1(K)
- P(h);XB(I)::QAB1(K)
- B(c);::QAB1(K)
- Refutation
- R(g);XS(E)
- Try
- R(J);XR(g)
- Threat
- DUALS(4)
- Vars
- B(c);XB(I)::QAB1(K)
- P(h);XB(I)::QAB1(K)
- Refutation
- Q(j);XR(J)
- Try
- Q(K);CHECK,XP(i)
- Vars
- R(g);N_GUARD,P_SPINR(g)::QAB1(K),XR(g)
- Refutation
- Q(j);XQ(K)
- Try
- P(H);XR(g)
- Threat
- DUALS(3)
- Refutation
- Q(j);XP(H)
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- R(g);XP(H)::S(E),XR(g)
- Q(j);::QAR2(K)
- R(g);::QAR2(K)
- B(c);N_GUARD::R1(J),XB(c)
- Refutation
- R(g);XS(E)
- Try
- Actual
- S(F);XP(e)
- Threat
- B(A)+S(F),DCHECK
- Vars
- R(g);N_GUARD,P_PINS(F),XS(E)::QAR2(K)
- B(b);OGATE,P_SPINB(b),XS(F)::B(A),XB(b)
- R(a);P_PINS(F),S_CUTB(c)::R1(J)
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).