MESON Chess Problem Database

Problem Display
PID: 227314 (2R5/4R3/3Nb1K1/4k3/2P1N3/4b2P/4Q3/4B3 w - - 0 1)

Parrinello, Mario

Probleemblad, 1981

2R5/4R3/3Nb1K1/4k3/2P1N3/4b2P/4Q3/4B3

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Bc3#
    • 1...Kf4
      • 2.Bg3#
    • 1...Bd4
      • 2.Bg3#
      • 2.Qh2#
    • 1...Bf4
      • 2.Bc3#
      • 2.Qb2#
  • Tries
    • 1.Sd2?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Qh2#
      • 1...Kxd6!
    • 1.Sf2?
      • 1...Kd4
        • 2.Qb2#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kxd6!
    • 1.Sg5?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Qh2#
      • 1...Kxd6!
    • 1.Bc3+?
      • 1...Bd4
        • 2.Qh2#
      • 1...Kf4!
    • 1.Bg3+?
      • 1...Bf4
        • 2.Qb2#
      • 1...Kd4!
    • 1.Rxe6+?
      • 1...Kd4
        • 2.Sb5#
        • 2.Sf5#
        • 2.Bc3#
      • 1...Kf4
        • 2.Bg3#
        • 2.Rf8#
        • 2.Qg4#
      • 1...Kxe6!
    • 1.Rc5+?
      • 1...Kd4
        • 2.Bc3#
      • 1...Kf4
        • 2.Bg3#
      • 1...Bxc5!
    • 1.Qf1?
      • threat
        • 2.Qf6#
      • 1...Kd4
        • 2.Bc3#
      • 1...Bf4
        • 2.Bc3#
      • 1...Bg5
        • 2.Bc3#
      • 1...Bf2!
    • 1.Qf3?
      • threat
        • 2.Qf6#
      • 1...Bf4
        • 2.Bc3#
        • 2.Qc3#
      • 1...Bg5
        • 2.Bc3#
      • 1...Kd4!
    • 1.Qb2+?
      • 1...Bd4
        • 2.Bg3#
        • 2.Qh2#
      • 1...Kf4!
    • 1.Qh2+?
      • 1...Bf4
        • 2.Bc3#
        • 2.Qb2#
      • 1...Kd4!
  • Keys
    • 1.Sc5!
      • 1...Kd4
        • 2.Qb2#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kxd6
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINB(c),S_FLIGHT::B(A)
  • Tries
    • Try
      • S(E);N_PINB(c),P_PINB(a)
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::S(E)
        • K(b);N_SPINB(a),S_FLIGHT::QAB(B)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT,XS(F)
    • Try
      • S(E);N_PINB(c),P_PINB(a)
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::QAB(B)
        • K(b);N_SPINB(a),S_FLIGHT::S(E)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT,XS(F)
    • Try
      • S(E);N_PINB(c),P_PINB(a)
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::S(E)
        • K(b);N_SPINB(a),S_FLIGHT::QAB(B)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT,XS(F)
    • Try
      • B(A);CHECK
      • Vars
        • B(a);N_SPINB(c),P_SPINB(a)::QAB(B)
      • Refutation
        • K(b);N_SPINB(c),S_FLIGHT
    • Try
      • B(A);CHECK
      • Vars
        • B(a);N_SPINB(c),P_SPINB(a)::QAB(B)
      • Refutation
        • K(b);N_SPINB(c),S_FLIGHT
    • Try
      • R(H);CHECK,XB(c)
      • Refutation
        • K(b);P-FLIGHT,XR(H)
    • Try
      • R(I);CHECK
      • Vars
        • K(b);N_SPINB(c),S_FLIGHT::B(A)
      • Refutation
        • B(a);XR(I)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);N_SPINB(c),S_FLIGHT::B(A)
        • B(a);N_GUARD::B(A)
      • Refutation
        • B(a);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • B(a);N_GUARD::B(A)
      • Refutation
        • K(b);N_SPINB(c),S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);N_SPINB(c),S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);N_SPINB(c),S_FLIGHT
  • Actual
    • S(E);N_PINB(c),P_PINB(a)
    • Vars
      • K(b);N_SPINB(a),S_FLIGHT::QAB(B)
      • K(b);N_SPINB(a),S_FLIGHT::S(E)
      • K(b);N_SPINB(a),S_FLIGHT,XS(F)::R1(H),XB(c)
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