MESON Chess Problem Database
Problem Display
PID: 141528 (2Q1b2n/2rP2K1/rNk5/P7/PB1R4/1N1R3B/1q6/1n6 w - - 0 1)
Drese, Gerardus Hendrikus
Hartong, Jan
2. International Team (Friendship) Match, 1967-1970
#2
11 + 7
| 102 | Probleemblad | 1977 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Bg2#
- 1...Qc1
- 2.Bg2#
- 2.Rd6#
- 1...Qa3
- 2.Bg2#
- 2.Rc4#
- 2.Rd6#
- 1...Qc3
- 2.Bg2#
- 1...Qxd4+
- 2.Sxd4#
- 1...Qa2
- 2.Rc4#
- 2.Rd6#
- 1...Qc2
- 2.Rd6#
- 1...Qd2
- 2.Rc4#
- 2.Rd6#
- 1...Qe2
- 2.Rc4#
- 2.Rd6#
- 1...Qf2
- 2.Rd6#
- 1...Qg2+
- 2.Bxg2#
- 1...Qh2
- 2.Rc4#
- 1...Qxb3
- 2.Rd6#
- 1...Rxc8
- 2.dxc8Q#
- 1...Bxd7
- 2.Bxd7#
- 1...Bf7
- 2.d8S#
- 1...Sc3
- 2.Rc4#
- 2.Rd6#
- 1...Sf7
- 2.dxe8Q#
- 2.dxe8B#
- 1...Qa1
- Tries
- 1.Kh7?
- threat
- 2.Rc4#
- 2.Rd6#
- 1...Qxd4
- 2.Sxd4#
- 1...Qxb3
- 2.Rd6#
- 1...Rxa5
- 2.Rd6#
- 1...Rxc8
- 2.dxc8Q#
- 1...Qc1
- 2.Bg2#
- 2.Rd6#
- 1...Qc3
- 2.Bg2#
- 2.Rd6#
- 1...Qc2
- 2.Rd6#
- 1...Qf2
- 2.Rd6#
- 1...Qh2
- 2.Rc4#
- 1...Bf7
- 2.Rd6#
- 2.d8S#
- 1...Sd2
- 2.Rd6#
- 1...Sa3
- 2.Rd6#
- 1...Sf7
- 2.Rc4#
- 2.dxe8Q#
- 2.dxe8B#
- 1...Bg6+!
- threat
- 1.Kxh8?
- threat
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qxd4+
- 2.Sxd4#
- 1...Qxb3
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Rxb6
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Rxc8
- 2.dxc8Q#
- 1...Bxd7
- 2.Bxd7#
- 1...Qa1
- 2.Bg2#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qc1
- 2.Bg2#
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qa3
- 2.Bg2#
- 2.Rc4#
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qc3
- 2.Bg2#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qa2
- 2.Rc4#
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qc2
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qd2
- 2.Rc4#
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qe2
- 2.Rc4#
- 2.Rd6#
- 2.d8S#
- 1...Qf2
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qg2
- 2.Bxg2#
- 2.Rc4#
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qh2
- 2.Rc4#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Ra7
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Ra8
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Bh5
- 2.d8S#
- 1...Bg6
- 2.d8S#
- 1...Bf7
- 2.d8S#
- 1...Sd2
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Sa3
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Sc3
- 2.Rc4#
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Rxa5!
- threat
- 1.Sc4?
- threat
- 2.Se5#
- 2.Qxa6#
- 1...Qg2+
- 2.Bxg2#
- 1...Rxa5
- 2.Sbxa5#
- 1...Rxc8
- 2.dxc8Q#
- 1...Qe2
- 2.Rd6#
- 2.Qxa6#
- 1...Qh2
- 2.Qxa6#
- 1...Rb6
- 2.Se5#
- 1...Ra7
- 2.Se5#
- 1...Ra8
- 2.Se5#
- 1...Sg6
- 2.Qxa6#
- 1...Sf7
- 2.Qxa6#
- 2.dxe8Q#
- 2.dxe8B#
- 1...Qxd4+!
- threat
- 1.Bc3?
- threat
- 2.Rc4#
- 2.Rd6#
- 1...Qg2+
- 2.Bxg2#
- 1...Qxc3
- 2.Bg2#
- 1...Rxa5
- 2.Rd6#
- 1...Rxc8
- 2.dxc8Q#
- 1...Qa3
- 2.Bg2#
- 1...Qf2
- 2.Rd6#
- 1...Qh2
- 2.Rc4#
- 1...Bf7
- 2.Rd6#
- 2.d8S#
- 1...Sd2
- 2.Rd6#
- 1...Sa3
- 2.Rd6#
- 1...Sf7
- 2.Rc4#
- 2.dxe8Q#
- 2.dxe8B#
- 1...Qxb3!
- threat
- 1.Be7?
- threat
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qxd4+
- 2.Sxd4#
- 1...Qg2+
- 2.Bxg2#
- 1...Qxb3
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Rxb6
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Rxc8
- 2.dxc8Q#
- 1...Bxd7
- 2.Bxd7#
- 1...Qa1
- 2.Bg2#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qc1
- 2.Bg2#
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qa3
- 2.Bg2#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qc3
- 2.Bg2#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qa2
- 2.Rc4#
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qc2
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qd2
- 2.Rc4#
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qe2
- 2.Rc4#
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qf2
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Qh2
- 2.Rc4#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Ra7
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Ra8
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Bh5
- 2.d8S#
- 1...Bg6
- 2.d8S#
- 1...Bf7
- 2.d8S#
- 1...Sd2
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Sa3
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Sc3
- 2.Rc4#
- 2.Rd6#
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Sg6
- 2.dxe8Q#
- 2.dxe8B#
- 2.d8S#
- 1...Sf7
- 2.dxe8Q#
- 2.dxe8B#
- 1...Rxa5!
- threat
- 1.Rc3+?
- 1...Sxc3
- 2.Rc4#
- 2.Rd6#
- 1...Qxc3!
- 1...Sxc3
- 1.Rf3?
- threat
- 2.Rf6#
- 1...Qxd4+
- 2.Sxd4#
- 1...Qxb3
- 2.Rd6#
- 1...Rxc8
- 2.dxc8Q#
- 1...Bxd7
- 2.Bxd7#
- 1...Qe2
- 2.Rd6#
- 1...Qf2
- 2.Rd6#
- 1...Qh2
- 2.Rc4#
- 1...Bf7
- 2.d8S#
- 1...Sf7
- 2.dxe8Q#
- 2.dxe8B#
- 1...Qg2+!
- threat
- 1.Kh7?
- Keys
- 1.Re3!
- threat
- 2.Re6#
- 1...Qxd4+
- 2.Sxd4#
- 1...Qg2+
- 2.Bxg2#
- 1...Qxb3
- 2.Rd6#
- 1...Rxc8
- 2.dxc8Q#
- 1...Bxd7
- 2.Bxd7#
- 1...Qe2
- 2.Rd6#
- 1...Qh2
- 2.Rc4#
- 1...Bf7
- 2.d8S#
- 1...Sf7
- 2.dxe8Q#
- 2.dxe8B#
- threat
- 1.Re3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- Q(b);N_GUARD::B(C)
- Q(b);CHECK,XR(F)::S(A),XQ(b)
- Q(b);N_PINR(F)::R1(F)
- Q(b);CHECK,N_GUARD,N_PINR(F)::B(C),XQ(b)
- Q(b);N_PINR(F)::R(F)
- Q(b);N_PINR(F),XS(A)::R1(F)
- R(e);N_PINP(I),N_SPINR(e),XQ(K)::PXR(e)=Q
- B(f);OGATE,XP(I)::B(C),XB(f)
- B(f);N_PINP(I)::P=S
- S(g);N_PINP(I)::PXB(f)=Q
- Tries
- Try
- K(J);N_SPINR(F),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(b);XR(F)::S(A),XQ(b)
- Q(b);XS(A)::R1(F)
- R(c);XP(G)::R1(F)
- R(e);N_PINP(I),N_SPINR(e),XQ(K)::PXR(e)=Q
- Q(b);P_PINR(B)::R1(F)
- Q(b);::R1(F)
- Q(b);P_PINB(C)::R(F)
- S(a);::R1(F)
- Refutation
- B(f);CHECK
- Try
- K(J);N_SPINP(I),S_FLIGHT,XS(g)
- Threat
- DUALS(3)
- Vars
- Q(b);CHECK,XR(F)::S(A),XQ(b)
- R(e);N_SPINR(e),OGATE,XQ(K)::PXR(e)=Q
- B(f);OGATE,XP(I)::B(C),XB(f)
- B(f);::P=S
- Refutation
- R(c);XP(G)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,N_GUARD,N_PINR(F)::B(C),XQ(b)
- R(c);XP(G)::S(A),XR(c)
- R(e);N_PINP(I),N_SPINR(e),XQ(K)::PXR(e)=Q
- Q(b);N_PINR(F)::QAR2(K),XR(c)
- R(c);::S(H)
- S(g);::QAR2(K),XR(c)
- Refutation
- Q(b);CHECK,XR(F)
- Try
- B(E);N_SPINR(F)
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,N_GUARD::B(C),XQ(b)
- Q(b);N_GUARD,P_PINR(F),XB(E)::B(C)
- R(c);XP(G)::R1(F)
- R(e);N_PINP(I),N_SPINR(e),XQ(K)::PXR(e)=Q
- Q(b);N_GUARD::B(C)
- Q(b);::R1(F)
- Q(b);::R(F)
- S(a);::R1(F)
- Refutation
- Q(b);XS(A)
- Try
- B(E);N_SPINP(I)
- Threat
- DUALS(3)
- Vars
- Q(b);CHECK,XR(F)::S(A),XQ(b)
- Q(b);CHECK,N_GUARD,N_PINR(F)::B(C),XQ(b)
- R(e);N_SPINR(e),OGATE,XQ(K)::PXR(e)=Q
- B(f);OGATE,XP(I)::B(C),XB(f)
- B(f);::P=S
- S(g);::PXB(f)=Q
- Refutation
- R(c);XP(G)
- Try
- R(B);CHECK,N_SPINR(F)
- Refutation
- Q(b);P_PINR(F),XR(B)
- Try
- R(B);
- Threat
- R(B)
- Vars
- Q(b);CHECK,XR(F)::S(A),XQ(b)
- Q(b);N_PINR(F),XS(A)::R1(F)
- R(e);N_PINP(I),N_SPINR(e),XQ(K)::PXR(e)=Q
- B(f);OGATE,XP(I)::B(C),XB(f)
- Q(b);N_PINR(F)::R1(F)
- Q(b);N_PINR(F)::R(F)
- B(f);N_PINP(I)::P=S
- S(g);N_PINP(I)::PXB(f)=Q
- Refutation
- Q(b);CHECK,N_PINR(F)
- Try
- Actual
- R(B);
- Threat
- R(B)
- Vars
- Q(b);CHECK,XR(F)::S(A),XQ(b)
- Q(b);CHECK,N_GUARD,N_PINR(F)::B(C),XQ(b)
- Q(b);N_PINR(F),XS(A)::R1(F)
- R(e);N_PINP(I),N_SPINR(e),XQ(K)::PXR(e)=Q
- B(f);OGATE,XP(I)::B(C),XB(f)
- Q(b);N_PINR(F)::R1(F)
- Q(b);N_PINR(F)::R(F)
- B(f);N_PINP(I)::P=S
- S(g);N_PINP(I)::PXB(f)=Q
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).