MESON Chess Problem Database
Problem Display
PID: 46630 (8/2p5/2n5/2P1Q3/2pp4/B1p5/P1k1N1p1/R1N1KbR1 w Q - 0 1)
Gruengard, Yehuda
Chess, 1948
#2
9 + 8
| 273 | Mat Plus | 1995 |
| 4981 | Gruengard MT Award | 2002 |
| 56 | The Problemist | 2003 |
SOLUTION
- SOUND
- Sets
- 1...Bxe2
- 2.Qxe2#
- 1...Sb4
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Sxe5
- 2.Sxd4#
- 1...Sa7
- 2.Sxd4#
- 1...Se7
- 2.Sxd4#
- 1...Sb8
- 2.Sxd4#
- 1...Sd8
- 2.Sxd4#
- 1...d3
- 2.Qxc3#
- 1...Bxe2
- Tries
- 1.Rxg2?
- threat
- 2.Sxd4#
- 1...Bxe2
- 2.Rxe2#
- 2.Qxe2#
- 1...d3
- 2.Sd4#
- 2.Qxc3#
- 1...Bxg2!
- threat
- 1.Qxd4?
- threat
- 2.Qxc3#
- 2.Qd1#
- 2.Qe4#
- 1...Sxd4
- 2.Sxd4#
- 1...Sb4
- 2.Qxc3#
- 2.Qd1#
- 1...Se5
- 2.Qxc3#
- 2.Qd1#
- 1...Bxe2!
- threat
- 1.Qf6?
- 1...d3
- 2.Qxc3#
- 1...Sb4
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Se5
- 2.Sxd4#
- 1...Sa7
- 2.Sxd4#
- 1...Se7
- 2.Sxd4#
- 1...Sb8
- 2.Sxd4#
- 1...Sd8
- 2.Sxd4#
- 1...Bxe2!
- 1...d3
- 1.Qg7?
- 1...d3
- 2.Qxc3#
- 1...Sb4
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Se5
- 2.Sxd4#
- 1...Sa7
- 2.Sxd4#
- 1...Se7
- 2.Sxd4#
- 1...Sb8
- 2.Sxd4#
- 1...Sd8
- 2.Sxd4#
- 1...Bxe2!
- 1...d3
- 1.Qh8?
- 1...d3
- 2.Qxc3#
- 1...Sb4
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Se5
- 2.Sxd4#
- 1...Sa7
- 2.Sxd4#
- 1...Se7
- 2.Sxd4#
- 1...Sb8
- 2.Sxd4#
- 1...Sd8
- 2.Sxd4#
- 1...Bxe2!
- 1...d3
- 1.Qh5?
- 1...Bxe2
- 2.Qxe2#
- 1...Sb4
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Se5
- 2.Sxd4#
- 1...Sa7
- 2.Sxd4#
- 1...Se7
- 2.Sxd4#
- 1...Sb8
- 2.Sxd4#
- 1...Sd8
- 2.Sxd4#
- 1...d3!
- 1...Bxe2
- 1.Qe6?
- 1...Bxe2
- 2.Qxe2#
- 1...Sb4
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Se5
- 2.Sxd4#
- 1...Sa7
- 2.Sxd4#
- 1...Se7
- 2.Sxd4#
- 1...Sb8
- 2.Sxd4#
- 1...Sd8
- 2.Sxd4#
- 1...d3!
- 1...Bxe2
- 1.Qe7?
- 1...Bxe2
- 2.Qxe2#
- 1...Sxe7
- 2.Sxd4#
- 1...Sb4
- 2.Sxd4#
- 1...Sa5
- 2.Sxd4#
- 1...Se5
- 2.Sxd4#
- 1...Sa7
- 2.Sxd4#
- 1...Sb8
- 2.Sxd4#
- 1...Sd8
- 2.Sxd4#
- 1...d3!
- 1...Bxe2
- 1.Qe8?
- 1...Bxe2
- 2.Qxe2#
- 1...Sb4
- 2.Sxd4#
- 2.Qa4#
- 1...Sa5
- 2.Sxd4#
- 1...Se5
- 2.Sxd4#
- 2.Qa4#
- 1...Sa7
- 2.Sxd4#
- 2.Qa4#
- 1...Se7
- 2.Sxd4#
- 2.Qa4#
- 1...Sb8
- 2.Sxd4#
- 2.Qa4#
- 1...Sd8
- 2.Sxd4#
- 2.Qa4#
- 1...d3!
- 1...Bxe2
- 1.Rxg2?
- Keys
- 1.Sd3!
- 1...Kxd3
- 2.0-0-0#
- 1...Bxe2
- 2.Qxe2#
- 1...Sxe5
- 2.Sb4#
- 1...cxd3
- 2.Rc1#
- 1...Sb4
- 2.Sxb4#
- 1...Sa5
- 2.Sb4#
- 1...Sa7
- 2.Sb4#
- 1...Se7
- 2.Sb4#
- 1...Sb8
- 2.Sb4#
- 1...Sd8
- 2.Sb4#
- 1...Kxd3
- 1.Sd3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- B(a);OGATE,XS(F)::QAR2(I),XB(a)
- S(g);N_GUARD::S(F),XP(f)
- S(g);N_GUARD,XQ(I)::S(F),XP(f)
- P(f);OGATE::QAR1(I),XP(d)
- Tries
- Try
- R(D);XP(c)
- Threat
- R(D)+S(F),DCHECK,XP(f)
- Refutation
- B(a);XR(D)
- Try
- Q(I);XP(f)
- Threat
- DUALS(3)
- Vars
- S(g);XQ(I)::S(F),XS(g)
- Refutation
- B(a);XS(F)
- Try
- Q(I);
- Vars
- P(f);OGATE::QAR1(I),XP(d)
- S(g);N_GUARD::S(F),XP(f)
- Refutation
- B(a);XS(F)
- Try
- Q(I);
- Vars
- P(f);OGATE::QAR1(I),XP(d)
- S(g);N_GUARD::S(F),XP(f)
- Refutation
- B(a);XS(F)
- Try
- Q(I);
- Vars
- P(f);OGATE::QAR1(I),XP(d)
- S(g);N_GUARD::S(F),XP(f)
- Refutation
- B(a);XS(F)
- Try
- Q(I);
- Vars
- B(a);OGATE,XS(F)::QAR2(I),XB(a)
- S(g);N_GUARD::S(F),XP(f)
- Refutation
- P(f);
- Try
- Q(I);
- Vars
- B(a);OGATE,XS(F)::QAR2(I),XB(a)
- S(g);N_GUARD::S(F),XP(f)
- Refutation
- P(f);
- Try
- Q(I);
- Vars
- B(a);OGATE,XS(F)::QAR2(I),XB(a)
- S(g);N_GUARD,XQ(I)::S(F),XP(f)
- S(g);N_GUARD::S(F),XP(f)
- Refutation
- P(f);
- Try
- Q(I);
- Vars
- B(a);OGATE,XS(F)::QAR2(I),XB(a)
- S(g);N_GUARD::S(F),XP(f)
- Refutation
- P(f);
- Try
- Actual
- S(B);
- Vars
- K(b);S_FLIGHT,XS(B)::0-0-0
- B(a);OGATE,XS(F)::QAR2(I),XB(a)
- S(g);N_GUARD,XQ(I)::S(B)
- P(e);SBLOCK,XS(B)::R1(A)
- S(g);N_GUARD::S(B),XS(g)
- S(g);N_GUARD::S(B)
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