MESON Chess Problem Database
Problem Display
PID: 97020 (8/3n4/3K4/4pN2/2p1kpB1/1pQ1p3/1n6/2N5 w - - 0 1)
Umnov, A
Problem (Zagreb), 1966
#2
5 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 1...Sa4
- 2.Qxc4#
- 1...Sc5
- 2.Qxe5#
- 1...Sb6
- 2.Qxe5#
- 1...Sf6
- 2.Qxe5#
- 1...Sb8
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...e2
- 2.Qf3#
- 1...f3
- 2.Qxe3#
- 1...Sd1
- Tries
- 1.Kc6?
- threat
- 2.Sd6#
- 1...f3
- 2.Qxe3#
- 1...Sb8+!
- threat
- 1.Sxb3?
- 1...f3
- 2.Qxe3#
- 1...Sc5
- 2.Sxc5#
- 1...Sd1
- 2.Qc2#
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 1...Sa4
- 2.Qc2#
- 2.Qxc4#
- 1...Sb6
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...e2
- 2.Sd2#
- 2.Qf3#
- 1...cxb3!
- 1...f3
- 1.Sh6?
- 1...Sc5
- 2.Qxe5#
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 1...Sa4
- 2.Qxc4#
- 1...Sb6
- 2.Qxe5#
- 1...Sf6
- 2.Qxe5#
- 1...Sb8
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...e2
- 2.Bf3#
- 2.Bf5#
- 1...f3!
- 1...Sc5
- 1.Se7?
- 1...Sc5
- 2.Qxe5#
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 1...Sa4
- 2.Qxc4#
- 1...Sb6
- 2.Qxe5#
- 1...Sf6
- 2.Qxe5#
- 1...Sb8
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...e2
- 2.Bf3#
- 2.Bf5#
- 1...f3!
- 1...Sc5
- 1.Sg7?
- 1...Sc5
- 2.Qxe5#
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 1...Sa4
- 2.Qxc4#
- 1...Sb6
- 2.Qxe5#
- 1...Sf6
- 2.Qxe5#
- 1...Sb8
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...e2
- 2.Bf3#
- 2.Bf5#
- 1...f3!
- 1...Sc5
- 1.Qc2+?
- 1...Sd3
- 2.Qxc4#
- 1...bxc2!
- 1...Sd3
- 1.Kc6?
- Keys
- 1.Sd3!
- 1...Sxd3
- 2.Qxc4#
- 1...cxd3
- 2.Qc6#
- 1...Sc5
- 2.Sxc5#
- 1...Sd1
- 2.Qxc4#
- 1...Sa4
- 2.Qxc4#
- 1...Sb6
- 2.Sc5#
- 1...Sf6
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...e2
- 2.Sf2#
- 1...f3
- 2.Sg3#
- 1...Sxd3
- 1.Sd3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAR2(B),XP(d)
- S(h);N_GUARD::QAR1(B),XP(g)
- P(c);OGATE::QAB1(B)
- P(f);N_GUARD::QAR1(B),XP(c)
- Tries
- Try
- K(E);P-FLIGHT
- Threat
- S(D)
- Vars
- P(f);N_GUARD::QAR1(B),XP(c)
- Refutation
- S(h);CHECK
- Try
- S(A);XP(b)
- Vars
- P(f);N_GUARD::QAR1(B),XP(c)
- S(h);N_GUARD::S(A),XS(h)
- S(a);N_GUARD::QAR2(B),XP(d)
- S(h);N_GUARD::S(A)
- Refutation
- P(d);XS(A)
- Try
- S(D);
- Vars
- S(h);N_GUARD::QAR1(B),XP(g)
- S(a);N_GUARD::QAR2(B),XP(d)
- Refutation
- P(f);
- Try
- S(D);
- Vars
- S(h);N_GUARD::QAR1(B),XP(g)
- S(a);N_GUARD::QAR2(B),XP(d)
- Refutation
- P(f);
- Try
- S(D);
- Vars
- S(h);N_GUARD::QAR1(B),XP(g)
- S(a);N_GUARD::QAR2(B),XP(d)
- Refutation
- P(f);
- Try
- Q(B);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR2(B),XP(d)
- Refutation
- P(b);XQ(B)
- Try
- Actual
- S(A);
- Vars
- S(a);N_GUARD,XS(A)::QAR2(B),XP(d)
- P(d);OGATE,SBLOCK,XS(A)::QAB(B)
- S(h);N_GUARD::S(A),XS(h)
- S(a);N_GUARD::QAR2(B),XP(d)
- S(h);N_GUARD::S(A)
- P(c);N_GUARD::S(A)
- P(f);N_GUARD::S(D)
Developed and maintained by Brian Stephenson.
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