MESON Chess Problem Database

Problem Display
PID: 245724 (1b6/8/8/2p5/2kp4/1R6/K7/7Q w - - 0 1)

Wirtanen, Erkki Aukusti

L'Italia Scacchistica, 1971

1b6/8/8/2p5/2kp4/1R6/K7/7Q

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qe4#
  • Tries
    • 1.Qg2?
      • threat
        • 2.Qg8#
      • 1...d3
        • 2.Qe4#
      • 1...Bg3!
    • 1.Qf3?
      • threat
        • 2.Qf7#
      • 1...d3
        • 2.Qe4#
        • 2.Qxd3#
      • 1...Bf4!
    • 1.Qc6?
      • threat
        • 2.Qe6#
      • 1...d3
        • 2.Qe4#
      • 1...Bd6!
    • 1.Qb7?
      • threat
        • 2.Qf7#
      • 1...d3
        • 2.Qe4#
      • 1...Bc7!
    • 1.Qf1+?
      • 1...d3
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Qh3?
      • threat
        • 2.Qe6#
      • 1...d3
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Qh7?
      • threat
        • 2.Qg8#
        • 2.Qf7#
      • 1...d3
        • 2.Qxd3#
        • 2.Qe4#
      • 1...Kd5!
  • Keys
    • 1.Qa8!
      • 1...d3
        • 2.Qe4#
      • 1...Bg3
        • 2.Qg8#
      • 1...Bh2
        • 2.Qg8#
      • 1...Bf4
        • 2.Qg8#
      • 1...Be5
        • 2.Qg8#
      • 1...Bd6
        • 2.Qg8#
      • 1...Ba7
        • 2.Qg8#
      • 1...Bc7
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB::QAR2(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • P(b);OGATEB::QAR2(A)
      • Refutation
        • B(d);
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Refutation
        • B(d);
    • Try
      • Q(A);P_PINP(c)
      • Threat
        • QAB(A)
      • Vars
        • P(b);OGATEB::QAR2(A)
      • Refutation
        • B(d);
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • P(b);OGATEB::QAR2(A)
      • Refutation
        • B(d);
    • Try
      • Q(A);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • P(b);OGATEB::QAR2(A)
      • B(d);OGATE::QAB(A)
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