MESON Chess Problem Database

Problem Display
PID: 71458 (4r3/n7/1pR5/P1P3pq/QK2kP2/2B1N1RN/1bP1P3/n4B2 w - - 0 1)

Nascimento, Raul C

Problemas, 2001

4r3/n7/1pR5/P1P3pq/QK2kP2/2B1N1RN/1bP1P3/n4B2

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qg6
      • 2.Bg2#
    • 1...Qf7
      • 2.Bg2#
    • 1...Qh4
      • 2.Bg2#
    • 1...Qh6
      • 2.Bg2#
    • 1...Qh7
      • 2.Bg2#
    • 1...Qh8
      • 2.Bg2#
    • 1...Re6
      • 2.Rxe6#
    • 1...Ra8
      • 2.Re6#
    • 1...Rb8
      • 2.Re6#
    • 1...Rc8
      • 2.Re6#
    • 1...Rd8
      • 2.Re6#
    • 1...Rf8
      • 2.Re6#
    • 1...Rg8
      • 2.Re6#
    • 1...Rh8
      • 2.Re6#
    • 1...Ba3+
      • 2.Kxa3#
    • 1...Bxc3+
      • 2.Kxc3#
    • 1...Sxc2+
      • 2.Qxc2#
    • 1...Sb3
      • 2.Kxb3#
    • 1...Sb5
      • 2.Kxb5#
    • 1...Sxc6+
      • 2.Qxc6#
    • 1...Sc8
      • 2.Kb5#
    • 1...gxf4
      • 2.Sf2#
    • 1...g4
      • 2.Bg2#
    • 1...bxa5+
      • 2.Kxa5#
    • 1...bxc5+
      • 2.Kxc5#
  • Tries
    • 1.Rf6?
      • threat
        • 2.Sf2#
      • 1...Ba3+
        • 2.Kxa3#
      • 1...Bxc3+
        • 2.Kxc3#
      • 1...Sxc2+
        • 2.Qxc2#
      • 1...Sc6+
        • 2.Qxc6#
      • 1...bxa5+
        • 2.Kxa5#
      • 1...bxc5+
        • 2.Kxc5#
      • 1...Qxe2
        • 2.Sxg5#
        • 2.Qxe8#
      • 1...Qf3
        • 2.Qxe8#
      • 1...Qxh3!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Rd4#
      • 1...Ba3+
        • 2.Kxa3#
      • 1...Bxc3+
        • 2.Kxc3#
      • 1...Sxc2+
        • 2.Qxc2#
      • 1...Sc6+
        • 2.Qxc6#
      • 1...bxa5+
        • 2.Kxa5#
      • 1...bxc5+
        • 2.Kxc5#
      • 1...gxf4
        • 2.Sf2#
      • 1...Qf3
        • 2.Qxe8#
      • 1...Qh8
        • 2.Bg2#
      • 1...Rd8
        • 2.Re6#
      • 1...Sb3
        • 2.Kxb3#
      • 1...Sb5
        • 2.Kxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 14
  • Sets
    • Q(e);N_GUARD::B(A)
    • R(h);N_GUARD::R(M),XR(h)
    • R(h);N_GUARD::R(M)
    • B(b);CHECK::QAR(H)+K(I),XB(b)
    • B(b);CHECK,XB(D)::QAR(H)+K(I),XB(b)
    • S(a);CHECK,OGATE,XP(B)::QAB(H),XS(a)
    • S(a);::QAR(H)+K(I),XS(a)
    • S(g);::QAR(H)+K(I),XS(g)
    • S(g);CHECK,OGATE,XR(M)::QAB(H),XS(g)
    • S(g);::QAR(H)+K(I)
    • P(d);SBLOCK,XP(J)::S(G)
    • P(d);S_CUTQ(e)::B(A)
    • P(f);CHECK,XP(K)::QAR(H)+K(I),XP(f)
    • P(f);CHECK,XP(L)::QAR(H)+K(I),XP(f)
  • Tries
    • Try
      • R(M);
      • Threat
        • S(G)
      • Vars
        • B(b);CHECK::QAR(H)+K(I),XB(b)
        • B(b);CHECK,XB(D)::QAR(H)+K(I),XB(b)
        • S(a);CHECK,OGATE,XP(B)::QAB(H),XS(a)
        • S(g);CHECK,N_GUARD::QAB(H),XS(g)
        • P(f);CHECK,XP(K)::QAR(H)+K(I),XP(f)
        • P(f);CHECK,XP(L)::QAR(H)+K(I),XP(f)
        • Q(e);N_GUARD::QAR(H),XR(h)
      • Refutation
        • Q(e);XS(G)
  • Actual
    • R(M);
    • Threat
      • R1(M)
    • Vars
      • B(b);CHECK::QAR(H)+K(I),XB(b)
      • B(b);CHECK,XB(D)::QAR(H)+K(I),XB(b)
      • S(a);CHECK,OGATE,XP(B)::QAB(H),XS(a)
      • S(g);CHECK,N_GUARD::QAB(H),XS(g)
      • P(f);CHECK,XP(K)::QAR(H)+K(I),XP(f)
      • P(f);CHECK,XP(L)::QAR(H)+K(I),XP(f)
      • P(d);SBLOCK,XP(J)::S(G)
      • Q(e);N_GUARD::QAR(H),XR(h)
      • Q(e);N_GUARD::B(A)
      • R(h);N_GUARD::R(M)
      • S(a);::QAR(H)+K(I),XS(a)
      • S(g);::QAR(H)+K(I),XS(g)
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