MESON Chess Problem Database

Problem Display
PID: 103739 (2N5/p7/p2Pp3/P4p2/2Pk1b1R/p2P1B2/N7/1Q1R2K1 w - - 0 1)

Rumyantsev, Sergei Yuryewitch

2nd HM., Pustovoi MT, 1974

2N5/p7/p2Pp3/P4p2/2Pk1b1R/p2P1B2/N7/1Q1R2K1

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qa1#
  • Tries
    • 1.Rxf4+?
      • 1...Ke3
        • 2.Qc1#
      • 1...Kc5
        • 2.Qb4#
      • 1...Ke5!
    • 1.Qc1?
      • 1...Kc5
        • 2.d4#
      • 1...Ke5
        • 2.Qa1#
        • 2.Qc3#
      • 1...e5!
    • 1.Qb3?
      • 1...Ke3
        • 2.d4#
      • 1...Kc5
        • 2.d4#
      • 1...Ke5
        • 2.Qc3#
      • 1...e5!
    • 1.Qb7?
      • 1...Kc5
        • 2.Qxa7#
      • 1...Ke5
        • 2.Qg7#
      • 1...e5
        • 2.Qxa7#
      • 1...Ke3!
  • Keys
    • 1.Qc2!
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc5
        • 2.d4#
      • 1...Ke5
        • 2.Qc3#
      • 1...e5
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINB(c),S_FLIGHT::QAB(A)
  • Tries
    • Try
      • R(H);CHECK,XB(c)
      • Vars
        • K(b);S_FLIGHT::QAB(A)
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);N_SPINB(c),OGATE,S_FLIGHT::P(E)
      • Refutation
        • P(f);
    • Try
      • Q(A);
      • Vars
        • K(b);N_SPINB(c),OGATE,S_FLIGHT::QAR(A)+P(E)
        • K(b);N_SPINB(c),OGATE,S_FLIGHT::P(E)
        • K(b);N_SPINB(c),S_FLIGHT::QAB(A)
      • Refutation
        • P(f);
    • Try
      • Q(A);
      • Vars
        • K(b);N_SPINB(c),S_FLIGHT::QAB(A),XP(g)
        • K(b);N_SPINB(c),S_FLIGHT::QAB(A)
        • P(f);SBLOCK::QAB(A),XP(g)
      • Refutation
        • K(b);N_SPINB(c),S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);N_SPINB(c),S_FLIGHT::QAB1(A)
      • K(b);N_SPINB(c),OGATE,S_FLIGHT::P(E)
      • K(b);N_SPINB(c),S_FLIGHT::QAB(A)
      • P(f);SBLOCK::QAB(A)
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