MESON Chess Problem Database
Problem Display
PID: 174336 (3N4/R7/3k4/R7/1P1r4/K1Nn2r1/3B4/3Q4 w - - 0 1)
Belliboni, Caetano
Sonnenfeld, Felix Alexander
Boletim da UBP, 1987
#2
8 + 4
SOLUTION
- SOUND
- Sets
- 1...Rxb4
- 2.Rd5#
- 1...Rc4
- 2.Rd5#
- 1...Re4
- 2.Sxe4#
- 2.Rd5#
- 1...Rf4
- 2.Bxf4#
- 2.Rd5#
- 1...Rg4
- 2.Rd5#
- 1...Rh4
- 2.Rd5#
- 1...Rd5
- 2.Rxd5#
- 1...Sc1
- 2.Bf4#
- 1...Se1
- 2.Bf4#
- 1...Sb2
- 2.Bf4#
- 1...Sf2
- 2.Bf4#
- 1...Sxb4
- 2.Bf4#
- 1...Sf4
- 2.Bxf4#
- 1...Sc5
- 2.Bf4#
- 1...Rxb4
- Tries
- 1.Sf7+?
- 1...Kc6
- 2.R5a6#
- 1...Ke6!
- 1...Kc6
- 1.Bf4+?
- 1...Rxf4
- 2.Rd5#
- 1...Se5
- 2.Bxe5#
- 2.R5a6#
- 2.Qxd4#
- 1...Sxf4!
- 1...Rxf4
- 1.Qe2?
- threat
- 2.R5a6#
- 2.Qe6#
- 2.Qe7#
- 1...Rxb4
- 2.Rd5#
- 2.Qe6#
- 2.Qe7#
- 1...Sxb4
- 2.Qe5#
- 2.Qe6#
- 2.Qe7#
- 1...Rg6
- 2.R5a6#
- 2.Qe7#
- 1...Rg7
- 2.R5a6#
- 2.Qe6#
- 1...Rc4
- 2.Rd5#
- 2.Qe6#
- 2.Qe7#
- 1...Re4
- 2.Sxe4#
- 2.Rd5#
- 1...Sf4
- 2.R5a6#
- 2.Qa6#
- 2.Qe5#
- 2.Qe7#
- 1...Sc5
- 2.Qe7#
- 2.bxc5#
- 1...Se5
- 2.Qxe5#
- 1...Re3!
- threat
- 1.Qg4?
- threat
- 2.Rd7#
- 2.Qe6#
- 2.Qd7#
- 2.Qxd4#
- 1...Rxb4
- 2.Rd5#
- 2.Rd7#
- 2.Qe6#
- 2.Qd7#
- 1...Rdxg4
- 2.Rd5#
- 1...Sxb4
- 2.Rd7#
- 2.Qe6#
- 2.Qd7#
- 1...Rd5
- 2.Rxd5#
- 2.Qe6#
- 1...Sc5
- 2.Qxd4#
- 1...Re3
- 2.Rd7#
- 2.Qd7#
- 2.Qxd4#
- 1...Rc4
- 2.Rd5#
- 2.Rd7#
- 2.Qe6#
- 2.Qd7#
- 1...Re4
- 2.Sxe4#
- 2.Rd5#
- 2.Rd7#
- 2.Qd7#
- 1...Rf4
- 2.Rd5#
- 2.Rd7#
- 2.Qe6#
- 2.Qd7#
- 1...Sf4
- 2.Rd7#
- 2.Qd7#
- 1...Se5
- 2.Qe6#
- 2.Qxd4#
- 1...Rgxg4!
- threat
- 1.Qh5?
- threat
- 2.Sb5#
- 2.R5a6#
- 1...Rxb4
- 2.Rd5#
- 2.Qd5#
- 1...Sxb4
- 2.Qc5#
- 2.Qe5#
- 1...Rc4
- 2.Sb5#
- 2.Rd5#
- 2.Qd5#
- 1...Rd5
- 2.Se4#
- 2.Rxd5#
- 2.R5a6#
- 2.Qxd5#
- 1...Sc1
- 2.R5a6#
- 2.Qc5#
- 2.Qe5#
- 1...Se1
- 2.R5a6#
- 2.Qc5#
- 2.Qe5#
- 1...Sb2
- 2.R5a6#
- 2.Qc5#
- 2.Qe5#
- 1...Sf2
- 2.R5a6#
- 2.Qc5#
- 2.Qe5#
- 1...Sf4
- 2.R5a6#
- 2.Qc5#
- 2.Qe5#
- 1...Sc5
- 2.Qxc5#
- 2.bxc5#
- 1...Se5
- 2.Qxe5#
- 1...Rg5!
- threat
- 1.Sf7+?
- Keys
- 1.Rf5!
- threat
- 2.Sb5#
- 1...Rxb4
- 2.Rd5#
- 1...Sxb4
- 2.Bf4#
- 1...Rd5
- 2.Se4#
- 2.Rxd5#
- 1...Sc1
- 2.Bf4#
- 1...Se1
- 2.Bf4#
- 1...Sb2
- 2.Bf4#
- 1...Sf2
- 2.Bf4#
- 1...Sf4
- 2.Bxf4#
- 1...Sc5
- 2.Bf4#
- 2.bxc5#
- 1...Se5
- 2.Rf6#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- R(c);N_GUARD,XP(E)::R1(F)
- R(c);N_GUARD::R1(F)
- R(c);N_GUARD::R1(F),XR(c)
- S(a);N_GUARD,P_PINS(D),S_CUTR(c)::B(B)
- S(a);N_GUARD,P_PINS(D),S_CUTR(c),XP(E)::B(B)
- S(a);N_GUARD,P_PINS(D),S_CUTR(c)::B(B),XS(a)
- Tries
- Try
- S(H);CHECK
- Vars
- K(d);P-FLIGHT::R(F)
- Refutation
- K(d);P-FLIGHT
- Try
- B(B);CHECK
- Vars
- R(c);P_SPINS(a),XB(B)::R1(F)
- Refutation
- S(a);P_PINS(D),P_SPINR(c),XB(B)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- S(a);N_GUARD,P_PINS(D)::QAB1(A),XS(a)
- Refutation
- R(b);
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(c);N_GUARD,XQ(A)::R1(F)
- S(a);P_PINS(D)::QAR2(A),XR(c)
- Refutation
- R(b);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD,P_PINS(D)::QAB1(A),XS(a)
- Refutation
- R(b);
- Try
- Actual
- R(F);
- Threat
- S(D)
- Vars
- R(c);N_GUARD,XP(E)::R1(F)
- S(a);N_GUARD,P_PINS(D),S_CUTR(c),XP(E)::B(B)
- S(a);N_GUARD,P_PINS(D),S_CUTR(c)::B(B)
- S(a);N_GUARD,P_PINS(D),S_CUTR(c)::B(B),XS(a)
- S(a);P_PINS(D),SBLOCK::R(F)
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