MESON Chess Problem Database

Problem Display
PID: 232803 (2R1R1K1/8/2ppp1P1/3k4/1PpPp1P1/2B5/6P1/7Q w - - 0 1)

Karpov, Valery N

Freie Presse, 1973

2R1R1K1/8/2ppp1P1/3k4/1PpPp1P1/2B5/6P1/7Q

#2

10 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.g3#
  • Tries
    • 1.Rcd8?
      • 1...e3
        • 2.g3#
      • 1...e5
        • 2.Rxe5#
      • 1...c5!
    • 1.Red8?
      • 1...e3
        • 2.g3#
      • 1...c5
        • 2.Rxc5#
      • 1...e5!
    • 1.Qf1?
      • 1...e3
        • 2.Qf3#
      • 1...e5
        • 2.Qf7#
      • 1...c5!
    • 1.Qh7?
      • 1...e5
        • 2.Qf7#
      • 1...c5
        • 2.Qb7#
      • 1...e3!
  • Keys
    • 1.Qd1!
      • 1...e3
        • 2.Qf3#
      • 1...e5
        • 2.dxe5#
      • 1...c5
        • 2.dxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);::QAB(A)+P(B)
  • Tries
    • Try
      • R(H);P_PINP(e)
      • Vars
        • P(b);::QAB(A)+P(B)
        • P(f);OGATE::R1(I),XP(f)
      • Refutation
        • P(d);
    • Try
      • R(I);P_PINP(e)
      • Vars
        • P(b);::QAB(A)+P(B)
        • P(d);OGATE::R1(H),XP(d)
      • Refutation
        • P(f);
    • Try
      • Q(A);
      • Vars
        • P(b);OGATEB::QAB(A)
        • P(f);OGATEB::QAB(A)
      • Refutation
        • P(d);
    • Try
      • Q(A);
      • Vars
        • P(f);OGATEB::QAB(A)
        • P(d);OGATEB::QAB(A)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Vars
      • P(b);OGATEB::QAB(A)
      • P(f);OGATE::QAR(A)+P(E),XP(f)
      • P(d);OGATE::QAR(A)+P(E),XP(d)
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