MESON Chess Problem Database
Problem Display
PID: 58314 (b7/1nNp1p1B/1Q3R2/N2Pk1P1/3p4/n1p1r1p1/2P1P1K1/4R3 w - - 0 1)
de Gaetano, G
1st Prize, La Scacchiera, 1951
#2
11 + 10
| 1997 | Ajedrez | 1955 |
SOLUTION
- SOUND
- Sets
- 1...Rxe2+
- 2.Rxe2#
- 1...Rd3
- 2.exd3#
- 1...Rf3
- 2.exf3#
- 1...Re4
- 2.Rf5#
- 1...Sb1
- 2.Sc4#
- 1...Sxc2
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sc4#
- 1...Sxa5
- 2.Qd6#
- 1...Sc5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...d3
- 2.Qxe3#
- 1...d6
- 2.Sc6#
- 1...Rxe2+
- Tries
- 1.Kf1?
- 1...Rf3+
- 2.exf3#
- 1...Rxe2
- 2.Rxe2#
- 1...Sxc2
- 2.Sc4#
- 1...Sxa5
- 2.Qd6#
- 1...Rd3
- 2.exd3#
- 1...Re4
- 2.Rf5#
- 1...Sb1
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sc4#
- 1...Sc5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...d3
- 2.Qxe3#
- 1...d6
- 2.Sc6#
- 1...g2+!
- 1...Rf3+
- 1.Kg1?
- 1...Rxe2
- 2.Rxe2#
- 1...Sxc2
- 2.Sc4#
- 1...Sxa5
- 2.Qd6#
- 1...Rd3
- 2.exd3#
- 1...Rf3
- 2.exf3#
- 1...Re4
- 2.Rf5#
- 1...Sb1
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sc4#
- 1...Sc5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...d3
- 2.Qxe3#
- 1...d6
- 2.Sc6#
- 1...g2!
- 1...Rxe2
- 1.Kh1?
- 1...Rxe2
- 2.Rxe2#
- 1...Sxc2
- 2.Sc4#
- 1...Sxa5
- 2.Qd6#
- 1...Rd3
- 2.exd3#
- 1...Rf3
- 2.exf3#
- 1...Re4
- 2.Rf5#
- 1...Sb1
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sc4#
- 1...Sc5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...d3
- 2.Qxe3#
- 1...d6
- 2.Sc6#
- 1...g2+!
- 1...Rxe2
- 1.Kh3?
- 1...Rxe2
- 2.Rxe2#
- 1...Sxc2
- 2.Sc4#
- 1...Sxa5
- 2.Qd6#
- 1...Rd3
- 2.exd3#
- 1...Rf3
- 2.exf3#
- 1...Re4
- 2.Rf5#
- 1...Sb1
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sc4#
- 1...Sc5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...d3
- 2.Qxe3#
- 1...d6
- 2.Sc6#
- 1...g2+!
- 1...Rxe2
- 1.Bd3?
- threat
- 2.Rf5#
- 1...Rxe2+
- 2.Rxe2#
- 1...Rxd3
- 2.exd3#
- 1...Rf3
- 2.exf3#
- 1...Sd6
- 2.Qxd6#
- 1...Re4!
- threat
- 1.Bg6?
- 1...Rxe2+
- 2.Rxe2#
- 1...Sxc2
- 2.Sc4#
- 1...Sxa5
- 2.Qd6#
- 1...Sb5
- 2.Sc4#
- 1...Rd3
- 2.exd3#
- 1...Rf3
- 2.exf3#
- 1...Re4
- 2.Rf5#
- 1...Sb1
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sc5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...d3
- 2.Qxe3#
- 1...d6
- 2.Sc6#
- 1...fxg6!
- 1...Rxe2+
- 1.Rxf7?
- threat
- 2.Qf6#
- 1...Rxe2+
- 2.Rxe2#
- 1...Rf3
- 2.exf3#
- 1...d6
- 2.Sc6#
- 1...Sd6!
- threat
- 1.Qc5?
- threat
- 2.Qe7#
- 1...Rxe2+
- 2.Rxe2#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...d3
- 2.Qxe3#
- 2.Qxc3#
- 1...d6
- 2.Sc6#
- 1...Sxc5!
- threat
- 1.Qb4?
- threat
- 2.Qe7#
- 1...Rxe2+
- 2.Rxe2#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...d3
- 2.Rf5#
- 2.Qxc3#
- 2.Qf4#
- 1...d6
- 2.Sc6#
- 1...Sc5!
- threat
- 1.Qa6?
- 1...Rxe2+
- 2.Rxe2#
- 2.Qxe2#
- 1...Sxc2
- 2.Sc4#
- 1...Sxa5
- 2.Qd6#
- 1...Rd3
- 2.exd3#
- 1...Rf3
- 2.exf3#
- 1...Re4
- 2.Rf5#
- 1...Sb1
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sc4#
- 1...Sc5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...d6
- 2.Sc6#
- 1...d3!
- 1...Rxe2+
- 1.Kf1?
- Keys
- 1.Qc6!
- 1...Rxe2+
- 2.Rxe2#
- 1...Sxc2
- 2.Sc4#
- 1...Sxa5
- 2.Qd6#
- 1...dxc6
- 2.Sxc6#
- 1...d3
- 2.Qxc3#
- 1...Rd3
- 2.exd3#
- 1...Rf3
- 2.exf3#
- 1...Re4
- 2.Rf5#
- 1...Sb1
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sb5
- 2.Sc4#
- 1...Sc5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...d6
- 2.Qe8#
- 1...Rxe2+
- 1.Qc6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(c);CHECK,OGATE,P_SPINR(c),XP(C)::R(A),XR(c)
- R(c);OGATE::R(A)+P(C),XR(c)
- R(c);SBLOCK::R1(I)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD,XP(B)::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(g);N_GUARD,P_PINP(F),XS(E)::QAB1(H)
- S(g);N_GUARD,P_PINP(F)::QAB1(H)
- S(g);N_GUARD,P_PINP(F)::QAB1(H),XS(g)
- P(e);OGATE::QAR2(H),XR(c)
- P(h);N_GUARD::S(E)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- R(c);CHECK,OGATE::R(A)+P(C),XR(c)
- R(c);OGATE,P_SPINR(c),XP(C)::R(A),XR(c)
- S(a);N_GUARD,XP(B)::S(E)
- S(g);N_GUARD,XS(E)::QAB1(H)
- R(c);OGATE::R(A)+P(C),XR(c)
- R(c);SBLOCK::R1(I)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(g);N_GUARD::QAB1(H)
- S(g);N_GUARD::QAB1(H),XS(g)
- P(e);OGATE::QAR2(H),XR(c)
- P(h);N_GUARD::S(E)
- Refutation
- P(d);CHECK
- Try
- K(D);P-FLIGHT
- Vars
- R(c);OGATE,P_SPINR(c),XP(C)::R(A),XR(c)
- S(a);N_GUARD,XP(B)::S(E)
- S(g);N_GUARD,XS(E)::QAB1(H)
- R(c);OGATE::R(A)+P(C),XR(c)
- R(c);SBLOCK::R1(I)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(g);N_GUARD::QAB1(H)
- S(g);N_GUARD::QAB1(H),XS(g)
- P(e);OGATE::QAR2(H),XR(c)
- P(h);N_GUARD::S(E)
- Refutation
- P(d);
- Try
- K(D);S_FLIGHT
- Vars
- R(c);OGATE,P_SPINR(c),XP(C)::R(A),XR(c)
- S(a);N_GUARD,XP(B)::S(E)
- S(g);N_GUARD,P_PINP(F),XS(E)::QAB1(H)
- R(c);OGATE::R(A)+P(C),XR(c)
- R(c);SBLOCK::R1(I)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(g);N_GUARD,P_PINP(F)::QAB1(H)
- S(g);N_GUARD,P_PINP(F)::QAB1(H),XS(g)
- P(e);OGATE::QAR2(H),XR(c)
- P(h);N_GUARD::S(E)
- Refutation
- P(d);CHECK
- Try
- K(D);S_FLIGHT
- Vars
- R(c);OGATE,P_SPINR(c),XP(C)::R(A),XR(c)
- S(a);N_GUARD,XP(B)::S(E)
- S(g);N_GUARD,XS(E)::QAB1(H)
- R(c);OGATE::R(A)+P(C),XR(c)
- R(c);SBLOCK::R1(I)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(g);N_GUARD::QAB1(H)
- S(g);N_GUARD::QAB1(H),XS(g)
- P(e);OGATE::QAR2(H),XR(c)
- P(h);N_GUARD::S(E)
- Refutation
- P(d);CHECK
- Try
- B(K);
- Threat
- R1(I)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XP(C)::R(A),XR(c)
- R(c);OGATE,XB(K)::R(A)+P(C),XR(c)
- R(c);OGATE::R(A)+P(C),XR(c)
- S(g);N_GUARD,P_PINP(F)::QAB1(H),XS(g)
- Refutation
- R(c);
- Try
- B(K);
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XP(C)::R(A),XR(c)
- S(a);N_GUARD,XP(B)::S(E)
- S(g);N_GUARD,P_PINP(F),XS(E)::QAB1(H)
- S(a);N_GUARD::S(E)
- R(c);OGATE::R(A)+P(C),XR(c)
- R(c);SBLOCK::R1(I)
- S(a);N_GUARD::S(E),XS(a)
- S(g);N_GUARD,P_PINP(F)::QAB1(H)
- S(g);N_GUARD,P_PINP(F)::QAB1(H),XS(g)
- P(e);OGATE::QAR2(H),XR(c)
- P(h);N_GUARD::S(E)
- Refutation
- P(i);XB(K)
- Try
- R(I);XP(i)
- Threat
- QAB1(H)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XP(C)::R(A),XR(c)
- R(c);OGATE::R(A)+P(C),XR(c)
- P(h);N_GUARD,SBLOCK::S(E)
- Refutation
- S(g);P_PINP(F)
- Try
- Q(H);
- Threat
- QAR2(H)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XP(C)::R(A),XR(c)
- S(g);N_GUARD,P_PINP(F)::QAB1(H),XS(g)
- S(g);N_GUARD,P_PINP(F)::QAB1(H)
- P(h);N_GUARD::S(E)
- Refutation
- S(g);P_PINP(F),XQ(H)
- Try
- Q(H);
- Threat
- QAR2(H)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XP(C)::R(A),XR(c)
- S(g);N_GUARD,P_PINP(F)::QAB1(H),XS(g)
- S(g);N_GUARD,P_PINP(F)::QAB1(H)
- P(h);N_GUARD::S(E)
- Refutation
- S(g);P_PINP(F)
- Try
- Q(H);
- Vars
- S(a);N_GUARD,XP(B)::S(E)
- S(g);N_GUARD,P_PINP(F),XS(E)::QAB1(H)
- R(c);OGATE::R(A)+P(C),XR(c)
- R(c);SBLOCK::R1(I)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(g);N_GUARD,P_PINP(F)::QAB1(H)
- S(g);N_GUARD,P_PINP(F)::QAB1(H),XS(g)
- P(h);N_GUARD::S(E)
- Refutation
- P(e);
- Try
- Actual
- Q(H);
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XP(C)::R(A),XR(c)
- S(a);N_GUARD,XP(B)::S(E)
- S(g);N_GUARD,XS(E)::QAB1(H)
- P(h);XQ(H)::S(E),XP(h)
- P(e);OGATEB::QAB(H),XP(b)
- R(c);OGATE::R(A)+P(C),XR(c)
- R(c);SBLOCK::R1(I)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- S(g);N_GUARD::QAB1(H)
- S(g);N_GUARD::QAB1(H),XS(g)
- P(h);OGATE::QAR(H)
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).