MESON Chess Problem Database

Problem Display
PID: 71122 (8/8/8/5B2/1pQ5/1P5R/2pkpN1K/N7 w - - 0 1)

Guidelli, Giorgio

L'Italia Scacchistica, 1920

8/8/8/5B2/1pQ5/1P5R/2pkpN1K/N7

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kc1
      • 2.Qxc2#
    • 1...c1S
      • 2.Qxb4#
    • 1...c1B
      • 2.Qxb4#
    • 1...e1Q
      • 2.Qxc2#
    • 1...e1B
      • 2.Qxc2#
    • 1...e1R
      • 2.Qxc2#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Qxc2#
      • 1...Kd1
        • 2.Qxc2#
      • 1...c1Q
        • 2.Qxc1#
      • 1...c1S
        • 2.Qxc1#
        • 2.Qc2#
      • 1...c1B
        • 2.Qxc1#
        • 2.Qc2#
      • 1...c1R
        • 2.Qxc1#
      • 1...e1S!
    • 1.Rd3+?
      • 1...Kc1
        • 2.Qxc2#
      • 1...Ke1!
    • 1.Qxe2+?
      • 1...Kc1
        • 2.Qxc2#
      • 1...Kxe2!
    • 1.Qd3+?
      • 1...Kc1
        • 2.Qxc2#
      • 1...Ke1!
    • 1.Qc3+?
      • 1...Kc1
        • 2.Qxc2#
      • 1...bxc3!
  • Keys
    • 1.Bg4!
      • 1...Kc1
        • 2.Qxc2#
      • 1...Ke1
        • 2.Qxe2#
      • 1...c1Q
        • 2.Qxe2#
      • 1...c1S
        • 2.Qxb4#
      • 1...c1B
        • 2.Qxe2#
        • 2.Qxb4#
      • 1...c1R
        • 2.Qxe2#
      • 1...e1Q
        • 2.Qxc2#
      • 1...e1S
        • 2.Qf4#
      • 1...e1B
        • 2.Qxc2#
        • 2.Qf4#
      • 1...e1R
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • K(b);P_SPINP(a),S_FLIGHT::QAR1(F),XP(a)
    • P(a);SBLOCK::QAB(F),XP(d)
    • P(c);SBLOCK::QAR1(F),XP(a)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(F),XP(a)
      • Vars
        • K(b);P-FLIGHT::QAB1(F),XP(a)
        • P(a);OGATE::QAB1(F),XQ(a)
        • P(a);OGATE::QAB1(F),XR(a)
      • Refutation
        • P(c);
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(F),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK,XP(c)
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(F),XP(a)
      • Refutation
        • K(b);P-FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(F),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR1(F),XP(a)
      • Refutation
        • P(d);XQ(F)
  • Actual
    • B(G);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAR1(F),XP(a)
      • K(b);S_FLIGHT::QAR1(F),XP(c)
      • P(a);SBLOCK::QAR1(F),XP(c)
      • P(a);SBLOCK::QAB(F),XP(d)
      • P(c);SBLOCK::QAR1(F),XP(a)
      • P(c);SBLOCK::QAB(F)
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