MESON Chess Problem Database
Problem Display
PID: 137722 (n2b2bK/4p1Q1/2NR4/7p/2kB1p2/3n4/P3rq2/1R1NrB2 w - - 0 1)
Segers, Marcel
L'Enigmistica Romana, 1934
#2
9 + 11
| 102 | Probleemblad | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Qxd4
- 2.Qxd4#
- 1...Rxa2
- 2.Rb4#
- 1...Rc2
- 2.Rb4#
- 1...Rd2
- 2.Rb4#
- 1...Re3
- 2.Rb4#
- 1...Re4
- 2.Rb4#
- 1...Re5
- 2.Rb4#
- 1...Re6
- 2.Rb4#
- 1...Ba5
- 2.Sxa5#
- 1...Sc1
- 2.Se5#
- 1...Sc5
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sb6
- 2.Sa5#
- 1...Sc7
- 2.Sa5#
- 1...e5
- 2.Qxg8#
- 1...Qxd4
- Tries
- 1.Bxf2?
- threat
- 2.Qc3#
- 2.Qd4#
- 1...Rxd1
- 2.Qd4#
- 1...exd6
- 2.Qd4#
- 1...Rb2
- 2.Bxd3#
- 1...Sb4
- 2.Rxb4#
- 1...Rc2
- 2.Bxd3#
- 2.Rb4#
- 2.Qd4#
- 1...Re4
- 2.Bxd3#
- 2.Rb4#
- 2.Qc3#
- 1...Re5
- 2.Bxd3#
- 2.Rb4#
- 1...Ba5
- 2.Sxa5#
- 2.Qd4#
- 1...Bb6
- 2.Qc3#
- 1...Se5
- 2.Sxe5#
- 2.Rb4#
- 1...e5
- 2.Qxg8#
- 1...Sb2!
- threat
- 1.Be3?
- threat
- 2.Qc3#
- 2.Qd4#
- 1...Qxe3
- 2.Qc3#
- 1...Rxd1
- 2.Qd4#
- 1...exd6
- 2.Qd4#
- 1...Rb2
- 2.Bxd3#
- 1...Sb4
- 2.Rxb4#
- 1...Rc2
- 2.Se5#
- 2.Bxd3#
- 2.Rb4#
- 2.Qd4#
- 1...Ba5
- 2.Sxa5#
- 2.Qd4#
- 1...Bb6
- 2.Qc3#
- 1...Se5
- 2.Sxe5#
- 2.Rb4#
- 1...e5
- 2.Qxg8#
- 1...Sb2!
- threat
- 1.Qe5?
- threat
- 2.Qb5#
- 1...Qxd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Rxe5
- 2.Rb4#
- 1...Sxe5
- 2.Sxe5#
- 1...Sb2
- 2.Sxb2#
- 1...Sb4
- 2.Sb2#
- 1...Rb2
- 2.Qc5#
- 1...Bd5
- 2.Qxd5#
- 1...Sc7
- 2.Sa5#
- 1...Sc5!
- threat
- 1.Qxg8+?
- 1...Re6
- 2.Rb4#
- 1...e6!
- 1...Re6
- 1.Bxf2?
- Keys
- 1.Qg5!
- threat
- 2.Qb5#
- 1...Qxd4+
- 2.Rxd4#
- 1...Sb2
- 2.Sxb2#
- 1...Sb4
- 2.Sb2#
- 1...Sc5
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Rb2
- 2.Qc5#
- 1...Re5
- 2.Rb4#
- 1...Bd5
- 2.Qxd5#
- 1...Sc7
- 2.Sa5#
- 1...e5
- 2.Qxg8#
- threat
- 1.Qg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 9
- Sets
- Q(c);OGATE,P_PINQ(H),XB(E)::QAR1(H),XQ(c)
- R(b);P_SPINS(d),XP(D)::R1(A)
- R(b);P_SPINS(d)::R1(A)
- B(j);N_GUARD::S(F),XB(j)
- S(d);N_GUARD,P_SPINR(b)::S(F)
- S(d);N_GUARD,P_SPINR(b)::S(F),XS(d)
- S(i);S_CUTB(j)::S(F)
- P(h);N_GUARD,S_CUTR(b)::QAB(H),XB(k)
- Tries
- Try
- B(E);XQ(c)
- Threat
- DUALS(2)
- Vars
- R(a);XS(B)::QAR1(H)
- P(h);XR(G)::QAR1(H)
- R(b);OGATE,P_SPINS(d)::B(C),XS(d)
- S(d);N_GUARD,P_SPINR(b)::R1(A),XS(d)
- B(j);::QAR1(H)
- P(h);N_GUARD,S_CUTR(b)::QAB(H),XB(k)
- Refutation
- S(d);P_SPINR(b)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- Q(c);XB(E)::QAR1(H)
- R(a);XS(B)::QAR1(H)
- P(h);XR(G)::QAR1(H)
- R(b);OGATE,P_SPINS(d)::B(C),XS(d)
- S(d);N_GUARD,P_SPINR(b)::R1(A),XS(d)
- B(j);::QAR1(H)
- P(h);N_GUARD::QAB(H),XB(k)
- Refutation
- S(d);P_SPINR(b)
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- R(b);P_SPINS(d),XQ(H)::R1(A)
- S(d);P_SPINR(b),XQ(H)::S(F),XS(d)
- S(d);N_GUARD,P_SPINR(b)::S(B),XS(d)
- S(d);N_GUARD,P_SPINR(b)::S(B)
- R(b);P_SPINS(d)::QAR1(H)
- B(k);N_GUARD::QAB1(H),XB(k)
- S(i);S_CUTB(j)::S(F)
- Refutation
- S(d);P_SPINR(b)
- Try
- Q(H);CHECK,XB(k)
- Vars
- R(b);P_SPINR(b),P_SPINS(d)::R1(A)
- Refutation
- P(h);P_SPINP(h)
- Try
- Actual
- Q(H);
- Threat
- QAB1(H)
- Vars
- Q(c);CHECK,OGATE,XB(E)::R1(G),XQ(c)
- S(d);N_GUARD,P_SPINR(b)::S(B),XS(d)
- S(d);N_GUARD,P_SPINR(b)::S(B)
- S(d);N_GUARD,P_SPINR(b)::S(F)
- S(d);N_GUARD,P_SPINR(b)::S(F),XS(d)
- R(b);P_SPINS(d)::QAR1(H)
- R(b);P_SPINS(d)::R1(A)
- B(k);N_GUARD::QAB1(H),XB(k)
- S(i);S_CUTB(j)::S(F)
- P(h);N_GUARD,S_CUTR(b)::QAB(H),XB(k)
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