MESON Chess Problem Database
Problem Display
PID: 18529 (bR1rN1B1/5Q2/1n6/2BR2r1/P1k3N1/P7/K2PP1q1/6b1 w - - 0 1)
Eaton, Vincent Lanius
1st Prize Set, Olympic Ty., 1956
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.Sxe5#
- 1...Rg6
- 2.Se5#
- 1...Rg7
- 2.Se5#
- 1...Rxg8
- 2.Se5#
- 1...Rd6
- 2.Sxd6#
- 1...Rxb8
- 2.Sd6#
- 1...Rc8
- 2.Sd6#
- 1...Bh2
- 2.Se3#
- 1...Be3
- 2.Sxe3#
- 1...Sxa4
- 2.Rb4#
- 1...Sd7
- 2.Sd6#
- 2.Rb4#
- 1...Sc8
- 2.Rb4#
- 1...Re5
- Tries
- 1.Rd3+?
- 1...Qd5
- 2.Rc3#
- 1...Rgd5
- 2.Rc3#
- 1...Rdd5
- 2.Rc3#
- 1...Bd5
- 2.Rc3#
- 1...Sd5
- 2.Rc3#
- 1...Kxc5!
- 1...Qd5
- 1.Qf4+?
- 1...Bd4
- 2.Se3#
- 2.Qxd4#
- 1...Qe4!
- 1...Bd4
- 1.Qf5?
- threat
- 2.Se5#
- 2.Rd4#
- 2.Qc2#
- 2.Qd3#
- 1...Qxd5
- 2.Qc2#
- 1...Qxe2
- 2.Rd4#
- 2.Qc2#
- 1...Qxg4
- 2.Rd4#
- 2.Qc2#
- 2.Qd3#
- 1...Rxg4
- 2.Rd4#
- 2.Qc2#
- 2.Qd3#
- 1...Rxg8
- 2.Qd3#
- 1...Rxd5
- 2.Qc2#
- 1...Rxe8
- 2.Rd4#
- 2.Qc2#
- 2.Qd3#
- 1...Bxc5
- 2.Se5#
- 2.Qc2#
- 2.Qd3#
- 1...Bxd5
- 2.Qc2#
- 1...Sxa4
- 2.Se5#
- 2.Rd4#
- 2.Rb4#
- 2.Qd3#
- 1...Sxd5
- 2.Qc2#
- 1...Qf3
- 2.Se5#
- 2.Rd4#
- 1...Qh3
- 2.Se5#
- 2.Rd4#
- 1...Qe4
- 2.Rd4#
- 1...Qh2
- 2.Rd4#
- 2.Qc2#
- 2.Qd3#
- 1...Qg3
- 2.Rd4#
- 1...Bh2
- 2.Se3#
- 2.Rd4#
- 2.Qc2#
- 2.Qd3#
- 1...Bd4
- 2.Rxd4#
- 2.Qd3#
- 1...Sd7
- 2.Sd6#
- 2.Rd4#
- 2.Rb4#
- 2.Qc2#
- 2.Qd3#
- 1...Rxf5!
- threat
- 1.Qd7?
- threat
- 2.Sd6#
- 2.Qb5#
- 1...Qxd5
- 2.Qb5#
- 1...Rxd5
- 2.Qb5#
- 1...Rxg8
- 2.Se5#
- 1...Rxe8
- 2.Qb5#
- 1...Bxc5
- 2.Rd4#
- 2.Qb5#
- 1...Bxd5
- 2.Qb5#
- 1...Sxd5
- 2.Qb5#
- 1...Sxd7
- 2.Sd6#
- 2.Rb4#
- 1...Qh2
- 2.Qb5#
- 1...Qg3
- 2.Qb5#
- 1...Rg6
- 2.Se5#
- 2.Qb5#
- 1...Bh2
- 2.Se3#
- 2.Qb5#
- 1...Bc6
- 2.Sd6#
- 1...Sc8
- 2.Rb4#
- 2.Qb5#
- 1...Rxd7!
- threat
- 1.Rd3+?
- Keys
- 1.Be3!
- threat
- 2.Rc5#
- 1...Qxd5
- 2.Qf4#
- 1...Qxe2
- 2.Qf4#
- 1...Rgxd5
- 2.Se5#
- 1...Rdxd5
- 2.Sd6#
- 1...Bxe3
- 2.Sxe3#
- 1...Bxd5
- 2.Qc7#
- 1...Sxd5
- 2.Rb4#
- threat
- 1.Be3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 10
- Sets
- R(d);N_GUARD::S(F),XR(d)
- R(d);N_GUARD::S(F)
- R(d);N_GUARD,XB(L)::S(F)
- R(g);N_GUARD::S(K),XR(g)
- R(g);N_GUARD,XR(J)::S(K)
- R(g);N_GUARD::S(K)
- B(a);N_GUARD::S(F)
- B(a);N_GUARD::S(F),XB(a)
- S(e);OGATE,XP(E)::R1(J)
- S(e);OGATE::R1(J)
- Tries
- Try
- R(H);CHECK
- Vars
- Q(b);P_SPINQ(b)::R1(H)
- R(d);P_SPINR(d)::R1(H)
- R(g);P_SPINR(g)::R1(H)
- B(f);P_SPINB(f)::R1(H)
- S(e);P_SPINS(e)::R1(H)
- Refutation
- K(c);P-FLIGHT,XB(G)
- Try
- Q(I);CHECK
- Refutation
- Q(b);P_SPINQ(b)
- Try
- Q(I);
- Threat
- DUALS(4)
- Vars
- Q(b);P_SPINQ(b),XR(H)::QAR2(I)
- R(d);XB(L)::QAB1(I)
- R(g);P_SPINR(g),XR(H)::QAR2(I)
- B(f);P_SPINB(f),XR(H)::QAR2(I)
- S(e);P_SPINS(e),XR(H)::QAR2(I)
- Q(b);::B(L)+R(H),DCHECK
- Refutation
- R(d);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(b);P_SPINQ(b),XR(H)::QAB1(I)
- R(d);P_SPINR(d),XR(H)::QAB1(I)
- R(d);N_GUARD,XB(L)::S(F)
- R(g);XS(K)::QAB1(I)
- B(f);P_SPINB(f),XR(H)::QAB1(I)
- S(e);P_SPINS(e),XR(H)::QAB1(I)
- Q(b);::QAB1(I)
- B(f);::S(K)
- Refutation
- R(g);XQ(I)
- Try
- Actual
- B(G);
- Threat
- QAB(I)+R(H),DCHECK
- Vars
- Q(b);N_GUARD,P_SPINQ(b),XR(H)::QAR(I)
- Q(b);N_GUARD,P_PINP(B),XP(C)::QAR(I)
- R(d);N_GUARD,P_SPINR(d),XR(H)::S(F)
- R(g);N_GUARD,P_SPINR(g),XR(H)::S(K)
- B(a);XB(G)::S(F),XB(a)
- B(f);N_GUARD,P_SPINB(f),XR(H)::QAR(I)
- S(e);OGATE,P_SPINS(e),XR(H)::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).