MESON Chess Problem Database
Problem Display
PID: 18915 (8/8/5n2/2NR1K2/B1k5/3p1Q2/Np1R4/1q6 w - - 0 1)
Lipton, Michael
Il Due Mosse, 1959
#2
7 + 5
| 3174 | The Two-move Chess Problem Tradition and Development | 1966 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Qxd3#
- 1...Qc1
- 2.Qxd3#
- 1...Qd1
- 2.Qxd3#
- 1...Qe1
- 2.Qxd3#
- 1...Qg1
- 2.Qxd3#
- 1...Qh1
- 2.Qxd3#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...Sh5
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sg8
- 2.Qe4#
- 1...Qa1
- Tries
- 1.Sb3?
- threat
- 2.Sa5#
- 2.Rd4#
- 2.Rc5#
- 1...Sxd5
- 2.Qe4#
- 1...Se4
- 2.Rd4#
- 2.Qxe4#
- 1...Qg1
- 2.Sa5#
- 2.Qxd3#
- 1...Sd7
- 2.Sa5#
- 2.Rd4#
- 2.Qe4#
- 1...Qxa2!
- threat
- 1.Se6?
- threat
- 2.Rd4#
- 2.Rc5#
- 1...Sxd5
- 2.Qe4#
- 1...Se4
- 2.Rd4#
- 2.Qxe4#
- 1...Qg1
- 2.Qxd3#
- 1...Sd7
- 2.Rd4#
- 2.Qe4#
- 1...Qxa2!
- threat
- 1.Sb7?
- threat
- 2.Sa5#
- 2.Sd6#
- 1...Sxd5
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Se8
- 2.Sa5#
- 2.Qe4#
- 1...Qxa2!
- threat
- 1.Sd7?
- threat
- 2.Se5#
- 2.Sb6#
- 1...Sxd5
- 2.Qe4#
- 1...Sxd7
- 2.Qe4#
- 1...Se4
- 2.Sb6#
- 2.Qxe4#
- 1...Qe1
- 2.Sb6#
- 2.Qxd3#
- 1...Qg1
- 2.Se5#
- 2.Qxd3#
- 1...Sg4
- 2.Sb6#
- 2.Qe4#
- 1...Qxa2!
- threat
- 1.Rc2+?
- 1...dxc2
- 2.Qb3#
- 2.Qd3#
- 1...Qxc2!
- 1...dxc2
- 1.R2xd3?
- 1...Qxd3+
- 2.Qxd3#
- 1...Qxa2
- 2.R3d4#
- 1...Sxd5
- 2.Qxd5#
- 1...Qf1
- 2.Rc3#
- 2.R3d4#
- 1...Qa1
- 2.Rc3#
- 2.R3d4#
- 1...Qc1
- 2.R3d4#
- 1...Qd1
- 2.Rc3#
- 1...Qe1
- 2.R3d4#
- 1...Qg1
- 2.Rc3#
- 1...Qh1
- 2.Rc3#
- 2.R3d4#
- 1...Se4
- 2.R3d4#
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 2.Qxg4#
- 2.Qf4#
- 1...Sh5
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 2.Qg4#
- 2.Qf4#
- 1...Sh7
- 2.Qe4#
- 2.Qg4#
- 2.Qf4#
- 1...Se8
- 2.Qe4#
- 2.Qg4#
- 2.Qf4#
- 1...Sg8
- 2.Qe4#
- 2.Qg4#
- 2.Qf4#
- 1...Qc2!
- 1...Qxd3+
- 1.Qf4+?
- 1...Se4
- 2.Qxe4#
- 1...Kxd5!
- 1...Se4
- 1.Sb3?
- Keys
- 1.Sxd3!
- 1...Qxd3+
- 2.Qxd3#
- 1...Qxa2
- 2.Rc2#
- 1...Sxd5
- 2.Qe4#
- 1...Se4
- 2.Se5#
- 2.Qxe4#
- 1...Qc2
- 2.Rxc2#
- 1...Qa1
- 2.Se5#
- 2.Rc2#
- 1...Qc1
- 2.Se5#
- 1...Qd1
- 2.Sxb2#
- 2.Se5#
- 1...Qe1
- 2.Sxb2#
- 1...Qf1
- 2.Sxb2#
- 2.Se5#
- 2.Rc2#
- 1...Qg1
- 2.Sxb2#
- 2.Se5#
- 2.Rc2#
- 1...Qh1
- 2.Sxb2#
- 2.Se5#
- 2.Rc2#
- 1...Sg4
- 2.Qe4#
- 1...Sh5
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sg8
- 2.Qe4#
- 1...Qxd3+
- 1.Sxd3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(a);N_GUARD::QAB1(C),XP(c)
- S(e);N_GUARD::QAR2(C),XS(e)
- S(e);N_GUARD::QAR2(C)
- Tries
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- S(e);N_GUARD,XR(F)::QAR2(C)
- Refutation
- Q(a);XS(A)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(e);N_GUARD,XR(F)::QAR2(C)
- Q(a);N_GUARD::QAB1(C),XP(c)
- Refutation
- Q(a);XS(A)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(e);N_GUARD,XR(F)::QAR2(C)
- S(e);N_GUARD::QAR2(C),XS(e)
- Refutation
- Q(a);XS(A)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(e);N_GUARD,XR(F)::QAR2(C)
- S(e);N_GUARD,XS(E)::QAR2(C)
- Refutation
- Q(a);XS(A)
- Try
- R(B);CHECK
- Refutation
- Q(a);XR(B)
- Try
- R(B);P_SPINR(B),XP(c)
- Vars
- Q(a);CHECK,OGATE,XR(B)::QAB1(C),XQ(a)
- Q(a);N_PINR(B),XS(A)::R1(B)
- S(e);OGATE,XR(F)::QAB1(C),XS(e)
- Q(a);N_PINR(B)::R1(B)
- S(e);N_GUARD::QAR2(C)
- Refutation
- Q(a);
- Try
- Q(C);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAR2(C),XS(e)
- Refutation
- K(d);P_SPINP(c),S_FLIGHT,XR(F)
- Try
- Actual
- S(E);P_SPINS(E),XP(c)
- Vars
- Q(a);CHECK,OGATE,XS(E)::QAB1(C),XQ(a)
- Q(a);N_GUARD,N_PINS(E),XS(A)::R(B)
- S(e);N_GUARD,XR(F)::QAR2(C)
- Q(a);N_GUARD::R(B),XQ(a)
- Q(a);N_PINS(E)::S(E)
- Q(a);N_PINS(E)::S(E),XP(b)
- S(e);N_GUARD::QAR2(C)
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