MESON Chess Problem Database

Problem Display
PID: 232945 (8/8/8/8/1K6/3Q1N2/4pkp1/6N1 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2013

8/8/8/8/1K6/3Q1N2/4pkp1/6N1

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf1
      • 2.Qxe2#
  • Tries
    • 1.Sd2?
      • 1...Ke1
        • 2.Qxe2#
      • 1...e1Q
        • 2.Sh3#
      • 1...e1S
        • 2.Sh3#
      • 1...e1B
        • 2.Sh3#
      • 1...e1R
        • 2.Sh3#
      • 1...Kxg1!
    • 1.Qd2?
      • 1...Kf1
        • 2.Qe1#
        • 2.Qxe2#
      • 1...Kg3!
    • 1.Qc3?
      • 1...Kf1
        • 2.Qe1#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...Kg3!
    • 1.Qd4+?
      • 1...Kg3
        • 2.Qh4#
      • 1...Kf1!
  • Keys
    • 1.Qe4!
      • 1...e1Q+
        • 2.Qxe1#
      • 1...e1B+
        • 2.Qxe1#
      • 1...Kf1
        • 2.Qxe2#
      • 1...Kg3
        • 2.Qh4#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,P_SPINP(a)::QAB1(B),XP(a)
  • Tries
    • Try
      • S(C);
      • Vars
        • K(b);S_FLIGHT::QAR1(B),XP(a)
        • P(a);P_PINS(C),SBLOCK::S(A)
        • P(a);SBLOCK::S(A)
      • Refutation
        • K(b);S_FLIGHT,XS(A)
    • Try
      • Q(B);P_PINP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • P(a);P_PINQ(B)::QAB1(B),XQ(a)
        • P(a);::QAB1(B),XS(a)
        • P(a);P_PINQ(B)::QAB1(B),XB(a)
        • P(a);::QAB1(B),XR(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • P(a);CHECK,OGATE::QAB1(B),XQ(a)
      • P(a);CHECK,OGATE::QAB1(B),XB(a)
      • K(b);P-FLIGHT::QAB1(B),XP(a)
      • K(b);S_FLIGHT::QAB1(B)
      • P(a);OGATE::QAB1(B),XS(a)
      • P(a);OGATE::QAB1(B),XR(a)
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