MESON Chess Problem Database

Problem Display
PID: 65348 (3K4/1PB2p1n/4pR2/3k2P1/r1bNN3/2R1PBP1/3P1Pr1/1n6 w - - 0 1)

Nascimento, Raul C

The Problemist, 2006

3K4/1PB2p1n/4pR2/3k2P1/r1bNN3/2R1PBP1/3P1Pr1/1n6

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8+
      • 2.bxa8Q#
      • 2.bxa8B#
    • 1...Bf1
      • 2.Sc5#
      • 2.Rc5#
    • 1...Ba2
      • 2.Sc5#
      • 2.Rc5#
    • 1...Be2
      • 2.Rc5#
    • 1...Bb3
      • 2.Sc5#
      • 2.Rc5#
    • 1...Bd3
      • 2.Rc5#
    • 1...Bb5
      • 2.Sc5#
      • 2.Rc5#
    • 1...Ba6
      • 2.Sc5#
      • 2.Rc5#
    • 1...e5
      • 2.Rd6#
  • Tries
    • 1.Sd6+?
      • 1...Ke5
        • 2.Sc6#
        • 2.Sxc4#
        • 2.S6b5#
        • 2.S6f5#
        • 2.Sxf7#
        • 2.Sc8#
        • 2.Se8#
      • 1...Kc5!
    • 1.Rf5+?
      • 1...e5
        • 2.Rxe5#
      • 1...exf5!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Sec5#
      • 1...Ra8+
        • 2.bxa8Q#
        • 2.bxa8B#
      • 1...Kc6
        • 2.Sd6#
      • 1...Rxf2
        • 2.Sxf2#
      • 1...Rxg3
        • 2.Sxg3#
      • 1...Bxb3
        • 2.Rc5#
      • 1...Sxd2
        • 2.Sexd2#
      • 1...Sxc3
        • 2.Sxc3#
      • 1...Sxg5
        • 2.Sxg5#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Bf1
        • 2.Rc5#
      • 1...Be2
        • 2.Rc5#
      • 1...Bd3
        • 2.Rc5#
      • 1...Bb5
        • 2.Rc5#
      • 1...Ba6
        • 2.Rc5#
      • 1...e5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • R(c);CHECK,OGATE::PXR(c)=Q
    • B(d);OGATE::R1(C)
    • P(f);OGATE,SBLOCK::R1(J)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • K(e);P-FLIGHT,P_SPINB(d)
    • Try
      • R(J);CHECK
      • Vars
        • P(f);P_SPINP(f)::R1(J),XP(f)
      • Refutation
        • P(f);XR(J)
  • Actual
    • S(G);
    • Threat
      • B(E)+S(H)
    • Vars
      • R(c);CHECK,OGATE::PXR(c)=Q
      • K(e);P_SPINB(d),P_SPINP(f),S_FLIGHT::B(E)+S(H)
      • R(b);XP(B)::B(E)+S(H),XR(b)
      • R(b);XP(F)::B(E)+S(H),XR(b)
      • B(d);OGATE,XS(G)::R1(C)
      • S(a);XP(A)::B(E)+S(H),XS(a)
      • S(a);XR(C)::B(E)+S(H),DCHECK,XS(a)
      • S(h);XP(I)::B(E)+S(H),XS(h)
      • S(h);XR(J)::B(E)+S(H),DCHECK,XS(h)
      • B(d);OGATE::R1(C)
      • P(f);OGATE,SBLOCK::R1(J)
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