MESON Chess Problem Database
Problem Display
PID: 157323 (6B1/3p3p/2p1qR1P/3kP3/1Q2R1rp/nn5N/1N3Kp1/6B1 w - - 0 1)
Mari, Alberto
L'Italia Scacchistica, 1916
#2
10 + 10
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Qf7
- 2.Bxf7#
- 1...Qxg8
- 2.Rd6#
- 1...Rg3
- 2.Sf4#
- 1...Rxe4
- 2.Qd6#
- 1...Rf4+
- 2.Sxf4#
- 1...Rg5
- 2.Sf4#
- 1...Rg6
- 2.Sf4#
- 1...Rg7
- 2.Sf4#
- 1...Rxg8
- 2.Sf4#
- 1...Sb1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sb5
- 2.Qc4#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...c5
- 2.Qb7#
- 1...d6
- 2.Bxe6#
- 1...Qf7
- Tries
- 1.Kf3?
- threat
- 2.Qd6#
- 1...Rf4+
- 2.Sxf4#
- 1...Sd2+
- 2.Qxd2#
- 1...Sd4+
- 2.Qxd4#
- 1...Rxg8
- 2.Sf4#
- 1...c5
- 2.Qb7#
- 1...Sc4
- 2.Qxc4#
- 1...Sb5
- 2.Qxb3#
- 2.Qc4#
- 1...Sc5
- 2.Qxc5#
- 2.Qd4#
- 1...d6
- 2.Bxe6#
- 2.Qxd6#
- 1...Rg3+!
- threat
- 1.Sd1?
- threat
- 2.Sc3#
- 2.Se3#
- 1...Rf4+
- 2.Sxf4#
- 1...Sc4
- 2.Sc3#
- 2.Qxc4#
- 1...Sd4
- 2.Sc3#
- 2.Qxd4#
- 1...c5
- 2.Qb7#
- 1...Rg3
- 2.Sf4#
- 1...Sb1
- 2.Se3#
- 2.Qc4#
- 1...Sc2
- 2.Sc3#
- 2.Qc4#
- 1...Sb5
- 2.Se3#
- 2.Qc4#
- 1...Rxe4!
- threat
- 1.Sd3?
- 1...Rf4+
- 2.Sdxf4#
- 2.Shxf4#
- 1...Qxg8
- 2.Rd6#
- 1...Rxg8
- 2.Sdf4#
- 2.Shf4#
- 1...Sc4
- 2.Qxc4#
- 1...Sd4
- 2.Qxd4#
- 1...c5
- 2.Qb7#
- 1...Qf7
- 2.Bxf7#
- 1...Rg3
- 2.Sdf4#
- 2.Shf4#
- 1...Rg5
- 2.Sdf4#
- 2.Shf4#
- 1...Rg6
- 2.Sdf4#
- 2.Shf4#
- 1...Rg7
- 2.Sdf4#
- 2.Shf4#
- 1...Sb1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sb5
- 2.Qc4#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sa5
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...d6
- 2.Bxe6#
- 1...Rxe4!
- 1...Rf4+
- 1.Sa4?
- threat
- 2.Sc3#
- 2.Sb6#
- 1...Rf4+
- 2.Sxf4#
- 1...Sc4
- 2.Sc3#
- 2.Qxc4#
- 1...Sd4
- 2.Sc3#
- 2.Qxd4#
- 1...c5
- 2.Qb7#
- 1...Rg3
- 2.Sf4#
- 2.Sb6#
- 1...Sb1
- 2.Sb6#
- 2.Qc4#
- 1...Sb5
- 2.Sb6#
- 2.Qc4#
- 1...Rxe4!
- threat
- 1.Bf7?
- 1...Rf4+
- 2.Sxf4#
- 1...Rxe4
- 2.Qd6#
- 1...Sc4
- 2.Qxc4#
- 1...Sd4
- 2.Qxd4#
- 1...c5
- 2.Qb7#
- 1...Rg3
- 2.Sf4#
- 1...Rg5
- 2.Sf4#
- 1...Rg6
- 2.Sf4#
- 1...Rg7
- 2.Sf4#
- 1...Rg8
- 2.Sf4#
- 1...Sb1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sb5
- 2.Qc4#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sa5
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...d6
- 2.Bxe6#
- 1...Qxf7!
- 1...Rf4+
- 1.Rff4?
- threat
- 2.Qd6#
- 1...Rxf4+
- 2.Sxf4#
- 1...c5
- 2.Qb7#
- 1...Sc4
- 2.Qxc4#
- 1...Sb5
- 2.Qc4#
- 1...Sc5
- 2.Qd4#
- 1...d6
- 2.Qxd6#
- 1...Rxg8!
- threat
- 1.Rxe6?
- threat
- 2.Rd6#
- 2.Rg6#
- 1...Rf4+
- 2.Sxf4#
- 1...Rxe4
- 2.Re7#
- 2.Re8#
- 2.Qd6#
- 1...Rxg8
- 2.Sf4#
- 2.Rd6#
- 1...Sc4
- 2.Qxc4#
- 1...Sd4
- 2.Qxd4#
- 1...Rg6
- 2.Sf4#
- 2.Rd6#
- 2.Rxg6#
- 1...Rg7
- 2.Sf4#
- 2.Rd6#
- 1...Sc5
- 2.Rd6#
- 2.Qd4#
- 1...d6
- 2.Rxd6#
- 2.Rg6#
- 1...dxe6!
- threat
- 1.Rg6?
- 1...Qf7+
- 2.Bxf7#
- 1...Rf4+
- 2.Sxf4#
- 1...Qxg8
- 2.Rd6#
- 1...Rxe4
- 2.Qd6#
- 1...Rxg6
- 2.Sf4#
- 1...Sc4
- 2.Qxc4#
- 1...Sd4
- 2.Qxd4#
- 1...c5
- 2.Qb7#
- 1...Rg3
- 2.Sf4#
- 1...Rg5
- 2.Sf4#
- 1...Sb1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sb5
- 2.Qc4#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sa5
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...d6
- 2.Bxe6#
- 1...hxg6!
- 1...Qf7+
- 1.Qxb3+?
- 1...Kc5
- 2.Ke1#
- 2.Ke2#
- 2.Kf3#
- 2.Sd3#
- 2.Sa4#
- 1...Sc4
- 2.Qxc4#
- 1...Kxe4!
- 1...Kc5
- 1.Kf3?
- Keys
- 1.Rf5!
- 1...Rf4+
- 2.Sxf4#
- 1...Qxg8
- 2.e6#
- 1...Rxe4
- 2.Qd6#
- 1...Rxg8
- 2.Sf4#
- 1...Qf7
- 2.Bxf7#
- 1...Sc4
- 2.Qxc4#
- 1...Sd4
- 2.Qxd4#
- 1...c5
- 2.Qb7#
- 1...Rg3
- 2.Sf4#
- 1...Rg5
- 2.Sf4#
- 1...Rg6
- 2.Sf4#
- 1...Rg7
- 2.Sf4#
- 1...Sb1
- 2.Qc4#
- 1...Sc2
- 2.Qc4#
- 1...Sb5
- 2.Qc4#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sa5
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...d6
- 2.exd6#
- 1...Rf4+
- 1.Rf5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(h);OGATEB,P_PINR(H)::B(J),XQ(h)
- Q(h);N_SPINQ(h),OGATE,XB(J)::R1(H)
- R(d);N_GUARD::S(D)
- R(d);SBLOCK,XR(F)::QAR1(E)
- R(d);CHECK,N_GUARD::S(D),XR(d)
- R(d);N_GUARD,N_SPINQ(h),XB(J)::S(D)
- S(b);N_GUARD::QAB1(E)
- S(b);N_GUARD::QAB1(E),XS(b)
- S(c);N_GUARD::QAR1(E)
- S(c);N_GUARD::QAR1(E),XS(c)
- P(g);OGATEB,SBLOCK::QAB(E)
- P(i);N_GUARD::B(J),XQ(h)
- Tries
- Try
- K(C);P-FLIGHT
- Threat
- QAR1(E)
- Vars
- R(d);CHECK,N_GUARD::S(D),XR(d)
- S(c);CHECK,N_GUARD::QAR(E),XS(c)
- S(c);CHECK,N_GUARD::QAR1(E),XS(c)
- R(d);N_GUARD,N_SPINQ(h),XB(J)::S(D)
- P(g);OGATEB::QAB(E)
- S(b);N_GUARD::QAB1(E),XS(b)
- Refutation
- R(d);CHECK
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,N_GUARD::S(D),XR(d)
- P(g);OGATEB,SBLOCK::QAB(E)
- R(d);N_GUARD::S(D)
- Refutation
- R(d);XR(F)
- Try
- S(B);
- Vars
- Q(h);N_SPINQ(h),OGATE,XB(J)::R1(H)
- S(b);N_GUARD::QAB1(E),XS(b)
- S(c);N_GUARD::QAR1(E),XS(c)
- P(g);OGATEB::QAB(E)
- Q(h);OGATEB,P_PINR(H)::B(J),XQ(h)
- S(b);N_GUARD::QAB1(E)
- S(c);N_GUARD::QAR1(E)
- P(i);N_GUARD::B(J),XQ(h)
- Refutation
- R(d);XR(F)
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,N_GUARD::S(D),XR(d)
- P(g);OGATEB::QAB(E)
- Refutation
- R(d);XR(F)
- Try
- B(J);
- Vars
- R(d);CHECK,N_GUARD::S(D),XR(d)
- R(d);SBLOCK,XR(F)::QAR1(E)
- S(b);N_GUARD::QAB1(E),XS(b)
- S(c);N_GUARD::QAR1(E),XS(c)
- P(g);OGATEB,SBLOCK::QAB(E)
- R(d);N_GUARD::S(D)
- S(b);N_GUARD::QAB1(E)
- S(c);N_GUARD::QAR1(E)
- P(i);N_GUARD::B(J),XQ(h)
- Refutation
- Q(h);N_SPINQ(h),P_PINR(H),XB(J)
- Try
- R(H);
- Threat
- QAR1(E)
- Vars
- R(d);CHECK,XR(H)::S(D),XR(d)
- P(g);OGATEB,SBLOCK::QAB(E)
- S(b);N_GUARD::QAB1(E),XS(b)
- S(b);N_GUARD::QAB1(E)
- S(c);N_GUARD::QAR1(E)
- P(i);::QAR1(E),XP(i)
- Refutation
- R(d);N_SPINQ(h),XB(J)
- Try
- R(H);XQ(h)
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,N_GUARD::S(D),XR(d)
- S(b);N_GUARD::QAB1(E),XS(b)
- S(c);N_GUARD::QAR1(E),XS(c)
- Refutation
- P(i);P_SPINP(i),XR(H)
- Try
- R(H);
- Vars
- Q(h);CHECK,OGATEB::B(J),XQ(h)
- R(d);CHECK,N_GUARD::S(D),XR(d)
- Q(h);N_SPINQ(h),OGATE,XB(J)::R1(H)
- R(d);SBLOCK,XR(F)::QAR1(E)
- R(d);N_GUARD,XR(H)::S(D)
- S(b);N_GUARD::QAB1(E),XS(b)
- S(c);N_GUARD::QAR1(E),XS(c)
- P(g);OGATEB,SBLOCK::QAB(E)
- R(d);N_GUARD::S(D)
- S(b);N_GUARD::QAB1(E)
- S(c);N_GUARD::QAR1(E)
- P(i);N_GUARD::B(J),XQ(h)
- Refutation
- P(j);XR(H)
- Try
- Q(E);CHECK,XS(c)
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAB1(E),XS(b)
- Refutation
- K(f);N_SPINQ(h),S_FLIGHT,XR(F)
- Try
- Actual
- R(H);
- Vars
- R(d);CHECK,N_GUARD::S(D),XR(d)
- Q(h);N_SPINQ(h),OGATE,XB(J)::R(H)+P(G)
- R(d);SBLOCK,XR(F)::QAR1(E)
- R(d);N_GUARD,N_SPINQ(h),XB(J)::S(D)
- Q(h);OGATEB,P_PINR(H)::B(J),XQ(h)
- S(b);N_GUARD::QAB1(E),XS(b)
- S(c);N_GUARD::QAR1(E),XS(c)
- P(g);OGATEB,SBLOCK::QAB(E)
- R(d);N_GUARD::S(D)
- S(b);N_GUARD::QAB1(E)
- S(c);N_GUARD::QAR1(E)
- P(i);OGATE::R(H)+P(G),XP(i)
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).