MESON Chess Problem Database

Problem Display
PID: 190890 (1r1r4/2R4p/6RK/p1P1p3/P1k1Pp2/Qpb5/1P1pN3/1B1N4 w - - 0 1)

Piatesi, Antonio

Schweizerische Schachzeitung, 1983

1r1r4/2R4p/6RK/p1P1p3/P1k1Pp2/Qpb5/1P1pN3/1B1N4

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.cxb6#
    • 1...Rd6
      • 2.cxd6#
    • 1...Bxb2
      • 2.Sxb2#
    • 1...f3
      • 2.Se3#
  • Tries
    • 1.Rb6?
      • threat
        • 2.Qxb3#
      • 1...Rxb6+
        • 2.cxb6#
      • 1...Rd6+
        • 2.cxd6#
      • 1...Bb4!
    • 1.Rd6?
      • threat
        • 2.Bd3#
      • 1...Rxd6+
        • 2.cxd6#
      • 1...Bd4!
  • Keys
    • 1.Rg3!
      • threat
        • 2.Rxc3#
      • 1...Rb6+
        • 2.cxb6#
      • 1...Rd6+
        • 2.cxd6#
      • 1...Bxb2
        • 2.Sxb2#
      • 1...fxg3
        • 2.Se3#
      • 1...Rd3
        • 2.Bxd3#
      • 1...Bb4
        • 2.Qxb3#
      • 1...Bd4
        • 2.Bd3#
      • 1...f3
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(i);OGATE,P_PINR(I)::R(K)+P(H),XR(i)
    • R(j);OGATE,P_PINR(I)::R(K)+P(H),XR(j)
    • B(c);XP(C)::S(B),XB(c)
    • P(e);N_GUARD::S(B)
  • Tries
    • Try
      • R(I);
      • Threat
        • QAB1(E),XP(b)
      • Vars
        • R(i);CHECK,OGATE,XR(I)::R(K)+P(H),XR(i)
        • R(j);CHECK,OGATE::R(K)+P(H),XR(j)
      • Refutation
        • B(c);
    • Try
      • R(I);
      • Threat
        • B(A)
      • Vars
        • R(j);CHECK,OGATE,XR(I)::R(K)+P(H),XR(j)
      • Refutation
        • B(c);
  • Actual
    • R(I);
    • Threat
      • R1(I),XB(c)
    • Vars
      • R(i);CHECK,OGATE::R(K)+P(H),XR(i)
      • R(j);CHECK,OGATE::R(K)+P(H),XR(j)
      • B(c);XP(C)::S(B),XB(c)
      • P(e);N_GUARD,XR(I)::S(B)
      • R(j);N_GUARD::B(A),XR(j)
      • B(c);S_CUTR(i)::QAB1(E),XP(b)
      • B(c);S_CUTR(j)::B(A)
      • P(e);N_GUARD::S(B)
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