MESON Chess Problem Database
Problem Display
PID: 253030 (2BRR1bK/1N4pp/rp6/7Q/PpkB4/nN6/P1Pp3q/3n3r w - - 0 1)
Pituk, Alexander
Die Schwalbe, 1965
#2
11 + 12
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Sxd2#
- 2.Sd6#
- 2.Qe2#
- 1...Qg3
- 2.Sxd2#
- 1...Qf4
- 2.Qe2#
- 1...Qe5
- 2.Sxd2#
- 1...Qd6
- 2.Sxd6#
- 1...Qc7
- 2.Sxd2#
- 2.Qe2#
- 1...Qb8
- 2.Sxd2#
- 2.Qe2#
- 1...Qe2
- 2.Sd6#
- 2.Qxe2#
- 1...Qf2
- 2.Sd6#
- 1...Qg2
- 2.Sd6#
- 1...Qh3
- 2.Sxd2#
- 2.Sd6#
- 1...Qh4
- 2.Sxd2#
- 2.Sd6#
- 2.Qe2#
- 1...Qxh5
- 2.Sxd2#
- 1...Bd5
- 2.Qxd5#
- 1...Be6
- 2.Bxe6#
- 1...Bf7
- 2.Qxf7#
- 1...Sf2
- 2.Sxd2#
- 1...Sb1
- 2.Qb5#
- 1...Sxc2
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...b5
- 2.Qc5#
- 1...Qg1
- Tries
- 1.S3a5+?
- 1...bxa5
- 2.Qc5#
- 1...Rxa5!
- 1...bxa5
- 1.S7a5+?
- 1...bxa5
- 2.Qc5#
- 1...Rxa5!
- 1...bxa5
- 1.Ba1?
- threat
- 2.Rd4#
- 2.Re4#
- 1...Sxc2
- 2.Qb5#
- 1...Qg1
- 2.Sxd2#
- 2.Sd6#
- 2.Qe2#
- 1...Qf4
- 2.Qe2#
- 1...Qe5
- 2.Sxd2#
- 1...Qd6
- 2.Sxd6#
- 1...Qe2
- 2.Sd6#
- 2.Rd4#
- 2.Qxe2#
- 1...Qf2
- 2.Sd6#
- 1...Qg2
- 2.Sd6#
- 2.Rd4#
- 1...Qh4
- 2.Sxd2#
- 2.Sd6#
- 2.Qe2#
- 1...Re1
- 2.Rd4#
- 1...Bd5
- 2.Qxd5#
- 1...Be6
- 2.Bxe6#
- 2.Rd4#
- 1...Sf2
- 2.Sxd2#
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sb5
- 2.Qxb5#
- 1...Sb2!
- threat
- 1.Bb2?
- threat
- 2.Rd4#
- 2.Re4#
- 1...Sxc2
- 2.Qb5#
- 1...Qg1
- 2.Sxd2#
- 2.Sd6#
- 2.Qe2#
- 1...Qf4
- 2.Qe2#
- 1...Qe5
- 2.Sxd2#
- 1...Qd6
- 2.Sxd6#
- 1...Qe2
- 2.Sd6#
- 2.Rd4#
- 2.Qxe2#
- 1...Qf2
- 2.Sd6#
- 1...Qg2
- 2.Sd6#
- 2.Rd4#
- 1...Qh4
- 2.Sxd2#
- 2.Sd6#
- 2.Qe2#
- 1...Re1
- 2.Rd4#
- 1...Bd5
- 2.Qxd5#
- 1...Be6
- 2.Bxe6#
- 2.Rd4#
- 1...Sf2
- 2.Sxd2#
- 2.Rd4#
- 1...Sc3
- 2.Rd4#
- 1...Sb5
- 2.Qxb5#
- 1...Sxb2!
- threat
- 1.Re2?
- threat
- 2.Sxd2#
- 1...Qxe2
- 2.Sd6#
- 2.Qxe2#
- 1...Sxc2
- 2.Qb5#
- 1...Qd6
- 2.Sxd6#
- 1...Bd5
- 2.Qxd5#
- 1...Sb1
- 2.Qb5#
- 1...Qf4!
- threat
- 1.Re6?
- threat
- 2.Rc6#
- 2.Qd5#
- 1...Qxh5
- 2.Sxd2#
- 1...Bxe6
- 2.Bxe6#
- 1...Sxc2
- 2.Qb5#
- 1...Qe5
- 2.Sxd2#
- 1...Qd6
- 2.Sxd6#
- 1...Qc7
- 2.Sxd2#
- 2.Qe2#
- 2.Qd5#
- 1...Qg2
- 2.Sd6#
- 1...Sc3
- 2.Rc6#
- 1...Se3
- 2.Rc6#
- 1...b5
- 2.Qc5#
- 2.Qd5#
- 1...g5
- 2.Rc6#
- 1...Ra5!
- threat
- 1.Qf3?
- threat
- 2.Qc6#
- 2.Qd3#
- 1...Qg3
- 2.Sxd2#
- 2.Qc6#
- 1...Qe5
- 2.Sxd2#
- 2.Qd3#
- 1...Qd6
- 2.Sxd6#
- 1...Qc7
- 2.Sxd2#
- 2.Qe2#
- 2.Qd3#
- 1...Qe2
- 2.Sd6#
- 2.Qxe2#
- 2.Qc6#
- 1...Qg2
- 2.Sd6#
- 2.Qd3#
- 1...Qh3
- 2.Sxd2#
- 2.Sd6#
- 2.Qc6#
- 1...Qh5
- 2.Sxd2#
- 2.Sd6#
- 2.Qd3#
- 1...Qh6
- 2.Qe2#
- 2.Qd3#
- 1...Ra5
- 2.Qd3#
- 1...Bd5
- 2.Qxd5#
- 2.Qd3#
- 1...Sb2
- 2.Qc6#
- 1...Sf2
- 2.Sxd2#
- 2.Qc6#
- 1...Se3
- 2.Qc6#
- 1...b5
- 2.Qd3#
- 1...Sxc2!
- threat
- 1.Qxh2?
- threat
- 2.Sxd2#
- 2.Qc7#
- 2.Qe2#
- 1...Rxa4
- 2.Qe2#
- 1...Sxc2
- 2.Qe2#
- 1...Re1
- 2.Sxd2#
- 2.Qc7#
- 1...Ra5
- 2.Sxd2#
- 2.Qe2#
- 1...Bd5
- 2.Sd6#
- 2.Qe2#
- 1...Sb2
- 2.Sxd2#
- 2.Qc7#
- 1...Sf2
- 2.Sxd2#
- 2.Qc7#
- 1...Sc3
- 2.Sxd2#
- 2.Qc7#
- 1...Sb1
- 2.Qc7#
- 2.Qe2#
- 1...Sb5
- 2.Sxd2#
- 2.Qe2#
- 1...b5
- 2.Sxd2#
- 2.Qe2#
- 1...Rxh2!
- threat
- 1.Qf5?
- threat
- 2.Qd3#
- 1...Sxc2
- 2.Qb5#
- 1...Qg3
- 2.Sxd2#
- 1...Qd6
- 2.Sxd6#
- 1...Qe2
- 2.Sd6#
- 1...Qh3
- 2.Sxd2#
- 2.Sd6#
- 1...Sf2
- 2.Sxd2#
- 1...Sb2!
- threat
- 1.S3a5+?
- Keys
- 1.Qe5!
- threat
- 2.Sd6#
- 1...Qxe5
- 2.Sxd2#
- 1...Sxc2
- 2.Qb5#
- 1...Qh6
- 2.Qe2#
- 1...Sb5
- 2.Qxb5#
- 1...b5
- 2.Qc5#
- threat
- 1.Qe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 11
- Sets
- Q(d);N_GUARD::S(C),XP(c)
- Q(d);N_GUARD::QAB(F)
- Q(d);N_GUARD::S(G),XQ(d)
- Q(d);N_GUARD::S(G)
- Q(d);N_GUARD,XQ(F)::S(C),XP(c)
- B(l);N_GUARD::QAB1(F),XB(l)
- B(l);N_GUARD::B(H),XB(l)
- B(l);N_GUARD::QAB(F),XB(l)
- S(a);S_CUTQ(d)::S(C),XP(c)
- S(e);N_GUARD::QAB1(F)
- S(e);N_GUARD,XP(B)::QAB1(F)
- S(e);N_GUARD::QAB1(F),XS(e)
- P(i);N_GUARD::QAR1(F)
- Tries
- Try
- S(C);CHECK
- Vars
- P(i);XS(C)::QAR1(F)
- Refutation
- R(h);XS(C)
- Try
- S(G);CHECK
- Vars
- P(i);XS(G)::QAR1(F)
- Refutation
- R(h);XS(G)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(e);N_GUARD,XP(B)::QAB1(F)
- Q(d);N_GUARD::QAB(F)
- Q(d);N_GUARD::S(C),XP(c)
- Q(d);N_GUARD::S(G),XQ(d)
- Q(d);N_GUARD::S(G)
- R(b);::R1(I)
- B(l);N_GUARD::QAB1(F),XB(l)
- S(a);::R1(I)
- S(e);N_GUARD::QAB1(F),XS(e)
- Refutation
- S(a);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(e);N_GUARD,XP(B)::QAB1(F)
- Q(d);N_GUARD::QAB(F)
- Q(d);N_GUARD::S(C),XP(c)
- Q(d);N_GUARD::S(G),XQ(d)
- Q(d);N_GUARD::S(G)
- R(b);::R1(I)
- B(l);N_GUARD::QAB1(F),XB(l)
- S(a);::R1(I)
- S(e);N_GUARD::QAB1(F),XS(e)
- Refutation
- S(a);XB(E)
- Try
- R(J);
- Threat
- S(C),XP(c)
- Vars
- S(e);N_GUARD,XP(B)::QAB1(F)
- Q(d);N_GUARD::S(G),XQ(d)
- B(l);N_GUARD::QAB1(F),XB(l)
- S(e);N_GUARD::QAB1(F)
- Refutation
- Q(d);
- Try
- R(J);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,XQ(F)::S(C),XP(c)
- B(l);OGATE,XR(J)::B(H),XB(l)
- S(e);N_GUARD,XP(B)::QAB1(F)
- Q(d);N_GUARD::S(C),XP(c)
- Q(d);N_GUARD::S(G),XQ(d)
- Q(d);N_GUARD::S(G)
- S(a);::R(J)
- P(j);::R(J)
- Refutation
- R(h);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD::S(G),XQ(d)
- R(h);::QAB1(F)
- S(a);::QAR2(F)
- P(i);::QAB1(F)
- Refutation
- S(e);XP(B)
- Try
- Q(F);XQ(d)
- Threat
- DUALS(3)
- Vars
- R(h);XP(D)::QAB(F)
- S(e);XP(B)::QAB(F)
- Refutation
- R(b);XQ(F)
- Try
- Q(F);
- Threat
- QAB1(F)
- Vars
- S(e);N_GUARD,XP(B)::QAB1(F)
- Q(d);N_GUARD::S(C),XP(c)
- Q(d);N_GUARD::S(G),XQ(d)
- Q(d);N_GUARD::S(G)
- S(a);S_CUTQ(d)::S(C),XP(c)
- Refutation
- S(a);
- Try
- Actual
- Q(F);
- Threat
- S(G)
- Vars
- Q(d);N_GUARD,XQ(F)::S(C),XP(c)
- S(e);N_GUARD,XP(B)::QAB1(F)
- Q(d);N_GUARD::QAB(F)
- S(e);N_GUARD::QAB1(F),XS(e)
- P(i);N_GUARD::QAR1(F)
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