MESON Chess Problem Database

Problem Display
PID: 245968 (8/6B1/8/4R3/1pk1K3/2N5/8/2Q5 w - - 0 1)

Murashev, Pavel Aleksandrovich

Sem Shakhmatnikh not, 2013

8/6B1/8/4R3/1pk1K3/2N5/8/2Q5

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Sa2#
  • Tries
    • 1.Ra5?
      • 1...bxc3
        • 2.Qxc3#
      • 1...b3
        • 2.Sa2#
        • 2.Sd5#
      • 1...Kb3!
    • 1.Rb5?
      • 1...bxc3
        • 2.Qf1#
      • 1...b3
        • 2.Qf1#
      • 1...Kb3!
    • 1.Rd5?
      • 1...bxc3
        • 2.Qxc3#
      • 1...b3
        • 2.Sa2#
      • 1...Kb3!
    • 1.Rf5?
      • 1...bxc3
        • 2.Qxc3#
      • 1...b3
        • 2.Sa2#
      • 1...Kb3!
    • 1.Rg5?
      • 1...bxc3
        • 2.Qxc3#
      • 1...b3
        • 2.Sa2#
      • 1...Kb3!
    • 1.Rh5?
      • 1...bxc3
        • 2.Qxc3#
      • 1...b3
        • 2.Sa2#
      • 1...Kb3!
    • 1.Qb2?
      • 1...bxc3
        • 2.Qb5#
      • 1...b3!
    • 1.Qa3?
      • 1...bxc3
        • 2.Rc5#
        • 2.Qa4#
      • 1...b3
        • 2.Rc5#
        • 2.Qc5#
      • 1...bxa3!
    • 1.Qc2?
      • threat
        • 2.Sb1#
        • 2.Sd1#
        • 2.Sa2#
        • 2.Se2#
        • 2.Sa4#
        • 2.Sb5#
      • 1...bxc3
        • 2.Qa4#
      • 1...b3!
  • Keys
    • 1.Qd1!
      • 1...Kxc3
        • 2.Rc5#
      • 1...bxc3
        • 2.Qa4#
      • 1...b3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);SBLOCK::QAR(A)+S(B)
  • Tries
    • Try
      • R(D);
      • Vars
        • P(a);OGATE,P_SPINP(a),XS(B)::QAR1(A),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • P(a);P_SPINP(a),XS(B)::QAB(A)
        • P(a);::QAB(A)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • R(D);
      • Vars
        • P(a);OGATE,P_SPINP(a),XS(B)::QAR1(A),XP(a)
        • P(a);SBLOCK::QAR(A)+S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • P(a);OGATE,P_SPINP(a),XS(B)::QAR1(A),XP(a)
        • P(a);SBLOCK::QAR(A)+S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • P(a);OGATE,P_SPINP(a),XS(B)::QAR1(A),XP(a)
        • P(a);SBLOCK::QAR(A)+S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • P(a);OGATE,P_SPINP(a),XS(B)::QAR1(A),XP(a)
        • P(a);SBLOCK::QAR(A)+S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(a);OGATE,SBLOCK,XS(B)::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(6)
      • Vars
        • P(a);OGATEB,P_SPINP(a),SBLOCK,XS(B)::QAR2(A)
      • Refutation
        • P(a);
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT,XS(B)::B(E)+R(D),DCHECK
      • P(a);OGATEB,SBLOCK,XS(B)::QAR2(A)
      • P(a);SBLOCK::QAR1(A)
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