MESON Chess Problem Database

Problem Display
PID: 198725 (2N1b1nB/1P2p1Q1/1PRpk1p1/8/K3B3/5PN1/8/4R3 w - - 0 1)

Guidelli, Giorgio

Il Secolo, 1921

2N1b1nB/1P2p1Q1/1PRpk1p1/8/K3B3/5PN1/8/4R3

#2

11 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Rxd6#
    • 1...Bxc6+
      • 2.Bxc6#
    • 1...Bd7
      • 2.Qxg8#
    • 1...Sf6
      • 2.Qxe7#
    • 1...Sh6
      • 2.Qxe7#
  • Tries
    • 1.Bb1+?
      • 1...Kd7
        • 2.Rxd6#
      • 1...Kd5!
    • 1.Bc2+?
      • 1...Kd7
        • 2.Rxd6#
      • 1...Kd5!
    • 1.Bd3+?
      • 1...Kd7
        • 2.Rxd6#
      • 1...Kd5!
    • 1.Bd5+?
      • 1...Kd7
        • 2.Rxd6#
      • 1...Kxd5!
    • 1.Bxg6+?
      • 1...Kd7
        • 2.Rxd6#
      • 1...Kd5!
    • 1.b8S?
      • 1...Bxc6+
        • 2.Bxc6#
      • 1...Sf6
        • 2.Qxe7#
      • 1...Bf7
        • 2.Qe5#
      • 1...Bd7
        • 2.Qxg8#
      • 1...Sh6
        • 2.Qxe7#
      • 1...g5!
  • Keys
    • 1.Qh7!
      • 1...Bxc6+
        • 2.Bxc6#
      • 1...Kd7
        • 2.Rxd6#
      • 1...Sf6
        • 2.Qxe7#
      • 1...Bf7
        • 2.Qh3#
      • 1...Bd7
        • 2.Qxg8#
      • 1...Sh6
        • 2.Qxe7#
      • 1...g5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_PINR(G),N_SPINP(a),P_SPINP(d),S_FLIGHT::R1(G),XP(a)
    • B(e);CHECK,N_SPINP(a),OGATE,XR(G)::R(A)+B(E),XB(e)
    • B(e);N_GUARD,SBLOCK::QAB(I),XS(f)
    • S(f);N_GUARD::QAR1(I),XP(d)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • K(b);N_PINR(G),N_SPINP(a),P_SPINP(d),S_FLIGHT::R1(G),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • K(b);N_PINR(G),N_SPINP(a),P_SPINP(d),S_FLIGHT::R1(G),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • K(b);N_PINR(G),N_SPINP(a),P_SPINP(d),S_FLIGHT::R1(G),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • K(b);N_PINR(G),N_SPINP(a),P_SPINP(d),S_FLIGHT::R1(G),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT,XB(E)
    • Try
      • B(E);CHECK,XP(c)
      • Vars
        • K(b);N_PINR(G),N_SPINP(a),P_SPINP(d),S_FLIGHT::R1(G),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • P(H);
      • Vars
        • B(e);CHECK,N_SPINP(a),OGATE,XR(G)::R(A)+B(E),XB(e)
        • S(f);N_GUARD::QAR1(I),XP(d)
        • B(e);N_PINR(G),SBLOCK::QAR1(I)
        • B(e);N_GUARD::QAB(I),XS(f)
      • Refutation
        • P(c);
  • Actual
    • Q(I);
    • Vars
      • B(e);CHECK,N_SPINP(a),OGATE,XR(G)::R(A)+B(E),XB(e)
      • K(b);N_PINR(G),N_SPINP(a),P_SPINP(d),S_FLIGHT::R1(G),XP(a)
      • S(f);N_GUARD::QAR1(I),XP(d)
      • B(e);N_PINR(G),SBLOCK::QAB(I)
      • B(e);N_GUARD,SBLOCK::QAB(I),XS(f)
      • P(c);OGATE::QAB1(I)
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