MESON Chess Problem Database
Problem Display
PID: 27570 (1qRR4/1p4B1/5N2/r1bn4/Bpk2pP1/1p6/4nQ2/3NK2b w - - 0 1)
Dombrovskis, Alfreds A
HM., Source?, 1958-1959
#2
9 + 11
SOLUTION
- SOUND
- Sets
- 1...Sec3
- 2.Sb2#
- 1...Sdc3
- 2.Sb2#
- 1...Se3
- 2.Qxe2#
- 1...Sb6
- 2.Qxe2#
- 1...Sxf6
- 2.Qxe2#
- 1...Sc7
- 2.Qxe2#
- 1...Se7
- 2.Qxe2#
- 1...Sec3
- Tries
- 1.Kd2?
- threat
- 2.Sb2#
- 1...Rxa4
- 2.Rxc5#
- 2.Qxc5#
- 1...b2
- 2.Sxb2#
- 1...Qe5!
- threat
- 1.Se4?
- threat
- 2.Sb2#
- 2.Qxe2#
- 1...Kd3
- 2.Qxe2#
- 1...Rxa4
- 2.Qxe2#
- 1...Bxe4
- 2.Sb2#
- 1...Bf3
- 2.Sb2#
- 1...Sc1
- 2.Sb2#
- 2.Qd4#
- 1...Sg1
- 2.Sb2#
- 2.Qd4#
- 1...Sec3
- 2.Sb2#
- 2.Qd4#
- 1...Sg3
- 2.Sb2#
- 2.Qd4#
- 1...Sd4
- 2.Sb2#
- 2.Qxd4#
- 1...Sdc3
- 2.Sb2#
- 2.Sd2#
- 1...b2
- 2.Sxb2#
- 2.Qxe2#
- 1...f3
- 2.Sb2#
- 1...Qe5!
- threat
- 1.Sxd5?
- threat
- 2.Sb2#
- 2.Sb6#
- 2.Qxe2#
- 1...Kd3
- 2.Qxe2#
- 1...Qxc8
- 2.Sb2#
- 2.Qxe2#
- 1...Rxa4
- 2.Qxe2#
- 1...Bxd5
- 2.Sb2#
- 2.Qxe2#
- 1...Qe5
- 2.Sb6#
- 1...Qa7
- 2.Sb2#
- 2.Qxe2#
- 1...Qc7
- 2.Sb2#
- 2.Qxe2#
- 1...Rb5
- 2.Sb2#
- 2.Qxe2#
- 1...Ra6
- 2.Sb2#
- 2.Qxe2#
- 1...Bf3
- 2.Sb2#
- 2.Sb6#
- 1...Be4
- 2.Sb2#
- 2.Sb6#
- 1...Sc1
- 2.Sb2#
- 2.Sb6#
- 2.Qd4#
- 1...Sg1
- 2.Sb2#
- 2.Sb6#
- 2.Qd4#
- 1...Sc3
- 2.Sb2#
- 2.Sb6#
- 2.Qd4#
- 1...Sg3
- 2.Sb2#
- 2.Sb6#
- 2.Qd4#
- 1...Sd4
- 2.Sb2#
- 2.Qxd4#
- 1...b2
- 2.Sxb2#
- 2.Sb6#
- 2.Qxe2#
- 1...f3
- 2.Sb2#
- 2.S5e3#
- 2.Sb6#
- 1...b5
- 2.Sb2#
- 2.Qxe2#
- 1...b6
- 2.Sb2#
- 2.Qxe2#
- 1...Qd6!
- threat
- 1.Sh5?
- threat
- 2.Sb2#
- 2.Qxe2#
- 1...Kd3
- 2.Qxe2#
- 1...Rxa4
- 2.Qxe2#
- 1...Bf3
- 2.Sb2#
- 1...Be4
- 2.Sb2#
- 1...Sc1
- 2.Sb2#
- 2.Qd4#
- 1...Sg1
- 2.Sb2#
- 2.Qd4#
- 1...Sec3
- 2.Sb2#
- 2.Qd4#
- 1...Sg3
- 2.Sb2#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sdc3
- 2.Sb2#
- 1...Sf6
- 2.Qxe2#
- 1...b2
- 2.Sxb2#
- 2.Qxe2#
- 1...f3
- 2.Sb2#
- 1...Qe5!
- threat
- 1.Sh7?
- threat
- 2.Sb2#
- 2.Qxe2#
- 1...Kd3
- 2.Qxe2#
- 1...Rxa4
- 2.Qxe2#
- 1...Bf3
- 2.Sb2#
- 1...Be4
- 2.Sb2#
- 1...Sc1
- 2.Sb2#
- 2.Qd4#
- 1...Sg1
- 2.Sb2#
- 2.Qd4#
- 1...Sec3
- 2.Sb2#
- 2.Qd4#
- 1...Sg3
- 2.Sb2#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sdc3
- 2.Sb2#
- 1...Sf6
- 2.Qxe2#
- 1...b2
- 2.Sxb2#
- 2.Qxe2#
- 1...f3
- 2.Sb2#
- 1...Qe5!
- threat
- 1.Se8?
- threat
- 2.Sb2#
- 2.Qxe2#
- 1...Kd3
- 2.Qxe2#
- 1...Rxa4
- 2.Qxe2#
- 1...Bf3
- 2.Sb2#
- 1...Be4
- 2.Sb2#
- 1...Sc1
- 2.Sb2#
- 2.Qd4#
- 1...Sg1
- 2.Sb2#
- 2.Qd4#
- 1...Sec3
- 2.Sb2#
- 2.Qd4#
- 1...Sg3
- 2.Sb2#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sdc3
- 2.Sb2#
- 1...Sf6
- 2.Qxe2#
- 1...b2
- 2.Sxb2#
- 2.Qxe2#
- 1...f3
- 2.Sb2#
- 1...Qe5!
- threat
- 1.Sg8?
- threat
- 2.Sb2#
- 2.Qxe2#
- 1...Kd3
- 2.Qxe2#
- 1...Rxa4
- 2.Qxe2#
- 1...Bf3
- 2.Sb2#
- 1...Be4
- 2.Sb2#
- 1...Sc1
- 2.Sb2#
- 2.Qd4#
- 1...Sg1
- 2.Sb2#
- 2.Qd4#
- 1...Sec3
- 2.Sb2#
- 2.Qd4#
- 1...Sg3
- 2.Sb2#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sdc3
- 2.Sb2#
- 1...Sf6
- 2.Qxe2#
- 1...b2
- 2.Sxb2#
- 2.Qxe2#
- 1...f3
- 2.Sb2#
- 1...Qe5!
- threat
- 1.Rxc5+?
- 1...Kd3
- 2.Sb2#
- 1...Rxc5!
- 1...Kd3
- 1.Qxc5+?
- 1...Kd3
- 2.Sb2#
- 2.Sf2#
- 2.Qc4#
- 1...Rxc5!
- 1...Kd3
- 1.Kd2?
- Keys
- 1.Sd7!
- threat
- 2.Sb2#
- 2.Qxe2#
- 1...Kd3
- 2.Qxe2#
- 1...Rxa4
- 2.Qxe2#
- 1...Sdc3
- 2.Sb6#
- 1...Se3
- 2.Sb6#
- 1...Sb6
- 2.Sxb6#
- 1...Sf6
- 2.Sb6#
- 1...Sc7
- 2.Se5#
- 1...Se7
- 2.Sb6#
- 1...Qe5
- 2.Sxe5#
- 1...Bf3
- 2.Sb2#
- 1...Be4
- 2.Sb2#
- 1...Sc1
- 2.Sb2#
- 2.Qd4#
- 1...Sg1
- 2.Sb2#
- 2.Qd4#
- 1...Sec3
- 2.Sb2#
- 2.Qd4#
- 1...Sg3
- 2.Sb2#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...b2
- 2.Sxb2#
- 2.Qxe2#
- 1...f3
- 2.Sb2#
- threat
- 1.Sd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 7
- REMOVED MATES = 1
- Sets
- S(b);SBLOCK::S(A)
- S(i);SBLOCK::S(A)
- S(i);::QAB(C),XS(b)
- S(i);XS(F)::QAB(C),XS(b)
- S(i);N_SPINB(h)::QAB(C),XS(b)
- Tries
- Try
- K(B);S_FLIGHT
- Threat
- S(A)
- Vars
- P(c);::S(A),XP(c)
- Refutation
- Q(k);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- K(e);N_SPINB(h),P_SPINS(i),S_FLIGHT::QAB1(C),XS(b)
- R(g);XB(D)::QAB(C),XS(b)
- B(a);XS(F)::S(A)
- B(a);::S(A)
- P(f);::S(A)
- Refutation
- Q(k);
- Try
- S(F);XS(i)
- Threat
- DUALS(3)
- Vars
- K(e);N_SPINB(h),S_FLIGHT::QAB1(C),XS(b)
- R(g);XB(D)::QAB(C),XS(b)
- Q(k);::S(F)
- Refutation
- Q(k);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- K(e);N_SPINB(h),P_SPINS(i),S_FLIGHT::QAB1(C),XS(b)
- R(g);XB(D)::QAB(C),XS(b)
- B(a);::S(A)
- S(b);N_GUARD::QAR1(C),XS(b)
- S(i);::S(A)
- S(i);::QAB(C),XS(b)
- P(f);::S(A)
- Refutation
- Q(k);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- K(e);N_SPINB(h),P_SPINS(i),S_FLIGHT::QAB1(C),XS(b)
- R(g);XB(D)::QAB(C),XS(b)
- B(a);::S(A)
- S(b);N_GUARD::QAR1(C),XS(b)
- S(i);::S(A)
- S(i);::QAB(C),XS(b)
- P(f);::S(A)
- Refutation
- Q(k);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- K(e);N_SPINB(h),P_SPINS(i),S_FLIGHT::QAB1(C),XS(b)
- R(g);XB(D)::QAB(C),XS(b)
- B(a);::S(A)
- S(b);N_GUARD::QAR1(C),XS(b)
- S(i);::S(A)
- S(i);::QAB(C),XS(b)
- P(f);::S(A)
- Refutation
- Q(k);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- K(e);N_SPINB(h),P_SPINS(i),S_FLIGHT::QAB1(C),XS(b)
- R(g);XB(D)::QAB(C),XS(b)
- B(a);::S(A)
- S(b);N_GUARD::QAR1(C),XS(b)
- S(i);::S(A)
- S(i);::QAB(C),XS(b)
- P(f);::S(A)
- Refutation
- Q(k);
- Try
- R(H);CHECK,XB(h)
- Vars
- K(e);P_SPINS(i),S_FLIGHT::S(A)
- Refutation
- R(g);XR(H)
- Try
- Q(C);CHECK,XB(h)
- Refutation
- R(g);P_SPINR(g),XQ(C)
- Try
- Actual
- S(F);
- Threat
- DUALS(2)
- Vars
- K(e);N_SPINB(h),S_FLIGHT::QAB1(C),XS(b)
- R(g);XB(D)::QAB(C),XS(b)
- S(i);N_GUARD::S(F)
- S(i);N_GUARD::S(F),XS(i)
- S(i);N_SPINB(h),S_CUTQ(k)::S(F)
- Q(k);N_GUARD::S(F),XQ(k)
- B(a);::S(A)
- S(b);N_GUARD::QAR1(C),XS(b)
- P(f);::S(A)
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