MESON Chess Problem Database
Problem Display
PID: 180398 (7b/3R1K2/2P1N3/2N1k1p1/1n1p1Rpn/2BBp3/6P1/q7 w - - 0 1)
Lider, Valentin Viktorovich
Sachove umeni (Ceskoslovensky sach), 1964
#2
9 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Bxd4#
- 1...Qc1
- 2.Bxd4#
- 1...Qd1
- 2.Bxd4#
- 1...Qe1
- 2.Bxd4#
- 1...Qf1
- 2.Bxd4#
- 1...Qg1
- 2.Bxd4#
- 1...Qh1
- 2.Bxd4#
- 1...Qa2
- 2.Bxd4#
- 1...Qa3
- 2.Bxd4#
- 1...Qa4
- 2.Bxd4#
- 1...Qa5
- 2.Bxd4#
- 1...Qa6
- 2.Bxd4#
- 1...Qa7
- 2.Bxd4#
- 1...Qa8
- 2.Bxd4#
- 1...Sxd3
- 2.Sxd3#
- 1...Sxg2
- 2.Rf5#
- 1...Sf3
- 2.Rf5#
- 1...Sf5
- 2.Re4#
- 2.Rxf5#
- 1...Sg6
- 2.Rf5#
- 1...Qb1
- Tries
- 1.Rfxd4?
- threat
- 2.R4d5#
- 1...Qf1+
- 2.Rf4#
- 1...Sd5
- 2.R4xd5#
- 2.R7xd5#
- 1...Qxc3!
- threat
- 1.Rdxd4?
- threat
- 2.Sd7#
- 1...Qa7+
- 2.Rd7#
- 1...Sd5!
- threat
- 1.Rfxd4?
- Keys
- 1.Sxd4!
- threat
- 2.Re4#
- 1...Qa2+
- 2.Sde6#
- 1...Kxf4
- 2.Se2#
- 1...gxf4
- 2.Sf3#
- 1...Qf1
- 2.Se2#
- 2.Sde6#
- threat
- 1.Sxd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 17
- Sets
- Q(a);N_GUARD::B(B),XP(d)
- Q(a);N_GUARD,P_PINR(D)::B(B),XP(d)
- Q(a);N_GUARD,P_PINS(G)::B(B),XP(d)
- Q(a);N_GUARD,P_PINR(H)::B(B),XP(d)
- S(c);XB(C)::S(E),XS(c)
- S(f);N_GUARD,XP(A)::R1(D)
- S(f);N_GUARD::R1(D)
- Tries
- Try
- R(D);XP(d)
- Threat
- B(B)+R(D),DCHECK
- Vars
- Q(a);CHECK,N_GUARD::B(B)+R(D)
- Refutation
- Q(a);XB(B)
- Try
- R(H);XP(d)
- Threat
- S(E)
- Vars
- Q(a);CHECK,N_GUARD::B(B)+R(H)
- Refutation
- S(c);
- Try
- Actual
- S(G);XP(d)
- Threat
- R1(D)
- Vars
- Q(a);CHECK,N_GUARD::B(B)+S(G)
- K(g);S_FLIGHT,XR(D)::S(G)
- P(h);SBLOCK,XR(D)::B(B)+S(G),DCHECK
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