MESON Chess Problem Database
Problem Display
PID: 136063 (8/1B1r4/6Q1/1ppP4/2kN1n2/p1B5/b2K4/N7 w - - 0 1)
Ancin, Andrej
HM., Pravda, 1974
#2
7 + 7
| 14649 | Andrej Ancin - Chess Compositions | 2008 |
SOLUTION
- SOUND
- Sets
- 1...Se2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sh3
- 2.Qd3#
- 1...Sxd5
- 2.Qd3#
- 1...Sh5
- 2.Qd3#
- 1...Se6
- 2.Qd3#
- 1...b4
- 2.Qa6#
- 1...cxd4
- 2.Qc6#
- 1...Se2
- Tries
- 1.Sac2?
- threat
- 2.Sxa3#
- 2.Se3#
- 1...Rxb7
- 2.Se3#
- 1...Sxd5
- 2.Sxa3#
- 2.Qd3#
- 1...Re7
- 2.Sxa3#
- 1...Sg2
- 2.Sxa3#
- 2.Qd3#
- 1...b4
- 2.Se3#
- 2.Qa6#
- 1...cxd4!
- threat
- 1.Sdc2?
- threat
- 2.Sxa3#
- 2.Se3#
- 2.Qe4#
- 1...Rxb7
- 2.Se3#
- 2.Qe4#
- 1...Sxd5
- 2.Sxa3#
- 2.Qd3#
- 2.Qe4#
- 1...Sxg6
- 2.Sxa3#
- 2.Se3#
- 1...b4
- 2.Qa6#
- 1...Re7
- 2.Sxa3#
- 1...Se2
- 2.Sxa3#
- 2.Se3#
- 2.Qd3#
- 1...Sg2
- 2.Sxa3#
- 2.Qd3#
- 2.Qe4#
- 1...Se6
- 2.Sxa3#
- 2.Se3#
- 2.Qd3#
- 1...Rxd5+!
- threat
- 1.Sdb3?
- threat
- 2.Sa5#
- 2.Qe4#
- 1...Rxb7
- 2.Qe4#
- 1...Bxb3
- 2.Qe4#
- 1...Sxg6
- 2.Sa5#
- 1...b4
- 2.Qa6#
- 1...Re7
- 2.Sa5#
- 1...Bb1
- 2.Sa5#
- 1...Se2
- 2.Sa5#
- 2.Qd3#
- 1...Se6
- 2.Sa5#
- 2.Qd3#
- 1...Rxd5+!
- threat
- 1.Qe4?
- threat
- 2.Sdc2#
- 2.Se2#
- 2.Sdb3#
- 2.Sf3#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 1...cxd4
- 2.Qxd4#
- 1...Re7
- 2.Se6#
- 1...Bb1
- 2.Sdc2#
- 1...Bb3
- 2.Sdc2#
- 2.Se2#
- 2.Sdxb3#
- 2.Sf3#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 1...Se2
- 2.Sxe2#
- 2.Qd3#
- 2.Qxe2#
- 1...Se6
- 2.Sxe6#
- 2.Qd3#
- 2.Qe2#
- 1...b4
- 2.Ba6#
- 1...Rxd5!
- threat
- 1.Qa6?
- threat
- 2.Qxb5#
- 1...cxd4
- 2.Qc6#
- 1...Rxb7!
- threat
- 1.Qb6?
- threat
- 2.Qxb5#
- 1...cxd4
- 2.Qxd4#
- 2.Qc6#
- 1...b4
- 2.Qb5#
- 2.Qa6#
- 1...Rxb7!
- threat
- 1.Qc6?
- threat
- 2.Qxb5#
- 1...b4
- 2.Ba6#
- 2.Qb5#
- 2.Qa6#
- 1...Rxb7!
- threat
- 1.Sac2?
- Keys
- 1.Qc2!
- threat
- 2.Qxa2#
- 1...cxd4
- 2.Ba5#
- 1...Bb1
- 2.Qb3#
- 1...Bb3
- 2.Qxb3#
- 1...b4
- 2.Bb2#
- threat
- 1.Qc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- S(d);N_GUARD,XP(E)::QAB1(F)
- P(e);OGATEB::QAB(F)
- P(f);OGATEB,XS(D)::QAR2(F)
- Tries
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- R(g);XB(G)::S(A)
- R(g);::S(A),XP(b)
- Refutation
- P(f);XS(D)
- Try
- S(D);P_SPINP(E)
- Threat
- DUALS(3)
- Vars
- P(e);OGATEB::QAB(F)
- R(g);N_PINP(E)::S(D),XP(b)
- Refutation
- R(g);CHECK,XP(E)
- Try
- S(D);P_SPINP(E)
- Threat
- DUALS(2)
- Vars
- R(g);N_PINP(E),XB(G)::QAR2(F)
- B(a);XS(D)::QAR2(F)
- S(d);XQ(F)::S(D)
- P(e);OGATEB::QAB(F)
- R(g);N_PINP(E)::S(D)
- B(a);::S(D)
- Refutation
- R(g);CHECK,XP(E)
- Try
- Q(F);
- Threat
- DUALS(7)
- Vars
- P(f);OGATE,P_SPINP(f),XS(D)::QAR1(F),XP(f)
- R(g);::QAR(F)+S(D)
- B(a);::QAR(F)+S(D)
- P(e);OGATEB::B(G)
- Refutation
- R(g);P_PINS(D),XP(E)
- Try
- Q(F);P_PINP(e)
- Threat
- QAB1(F),XP(e)
- Vars
- P(f);OGATEB,XS(D)::QAR2(F)
- Refutation
- R(g);XB(G)
- Try
- Q(F);
- Threat
- QAB1(F),XP(e)
- Refutation
- R(g);XB(G)
- Try
- Q(F);P_PINP(f)
- Threat
- QAB1(F),XP(e)
- Refutation
- R(g);XB(G)
- Try
- Actual
- Q(F);
- Threat
- QAB(F),XB(a)
- Vars
- P(f);SBLOCK,XS(D)::QAR(F)+B(C)
- B(a);N_GUARD::QAB1(F)
- B(a);N_GUARD::QAB1(F),XB(a)
- P(e);SBLOCK::QAR(F)+B(C)
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