MESON Chess Problem Database

Problem Display
PID: 233036 (8/8/8/pK6/3Rp3/1pkNp3/2p5/2Q5 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Kudesnik, 2017

8/8/8/pK6/3Rp3/1pkNp3/2p5/2Q5

#2

4 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...exd3
      • 2.Rc4#
  • Tries
    • 1.Kc5?
      • threat
        • 2.Qe1#
      • 1...exd3
        • 2.Rc4#
      • 1...b2!
    • 1.Se1?
      • threat
        • 2.Rc4#
      • 1...b2
        • 2.Qxe3#
      • 1...Kxd4!
    • 1.Sb4?
      • threat
        • 2.Rc4#
      • 1...Kxd4
        • 2.Qb2#
      • 1...b2
        • 2.Qxe3#
      • 1...axb4!
    • 1.Se5?
      • threat
        • 2.Rc4#
      • 1...b2
        • 2.Qxe3#
      • 1...Kxd4!
    • 1.Qxe3?
      • threat
        • 2.Rc4#
      • 1...b2
        • 2.Sc1#
        • 2.Se1#
        • 2.Sf2#
        • 2.Sb4#
        • 2.Sf4#
        • 2.Sc5#
        • 2.Se5#
      • 1...exd3!
    • 1.Qa1+?
      • 1...Kd2
        • 2.Sf4#
        • 2.Qe1#
      • 1...b2!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Se2#
        • 2.Rc4#
      • 1...Kxd4
        • 2.Qb2#
      • 1...b2
        • 2.Qxe3#
      • 1...e2
        • 2.Sxe2#
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(e);SBLOCK,XS(B)::R1(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAB(A)
      • Vars
        • P(e);SBLOCK,XS(B)::R1(C)
      • Refutation
        • P(b);
    • Try
      • S(B);
      • Threat
        • R1(C)
      • Vars
        • P(b);SBLOCK::QAR2(A),XP(d)
      • Refutation
        • K(c);N_SPINP(a),S_FLIGHT,XR(C)
    • Try
      • S(B);
      • Threat
        • R1(C)
      • Vars
        • K(c);N_SPINP(a),S_FLIGHT,XR(C)::QAB(A)
        • P(b);SBLOCK::QAR2(A),XP(d)
      • Refutation
        • P(f);XS(B)
    • Try
      • S(B);
      • Threat
        • R1(C)
      • Vars
        • P(b);SBLOCK::QAR2(A),XP(d)
      • Refutation
        • K(c);N_SPINP(a),S_FLIGHT,XR(C)
    • Try
      • Q(A);N_PINP(a),XP(d)
      • Threat
        • R1(C)
      • Refutation
        • P(e);P_SPINP(e),XS(B)
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);N_SPINP(a),S_FLIGHT,XR(C)::QAB(A)
      • P(b);SBLOCK::QAR2(A),XP(d)
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