MESON Chess Problem Database

Problem Display
PID: 220504 (6Q1/8/8/8/1K6/8/2pk2P1/3BR3 w - - 0 1)

Torngren, Pehr Hendrik

Die Schwalbe, 1928

6Q1/8/8/8/1K6/8/2pk2P1/3BR3

#2

5 + 2

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qd5#
      • 2.Qd8#
  • Tries
    • 1.Qa2?
      • 1...Kc1
        • 2.Qxc2#
      • 1...Kd3
        • 2.Qd5#
      • 1...Kxe1!
    • 1.Qb3?
      • threat
        • 2.Qe3#
      • 1...Kc1
        • 2.Qxc2#
      • 1...cxd1Q
        • 2.Qxd1#
        • 2.Qc3#
      • 1...cxd1S
        • 2.Qxd1#
      • 1...cxd1B
        • 2.Qxd1#
        • 2.Qc3#
      • 1...cxd1R
        • 2.Qxd1#
        • 2.Qc3#
      • 1...Kxe1!
    • 1.Qg5+?
      • 1...Kd3
        • 2.Qe3#
        • 2.Qd8#
        • 2.Qd5#
      • 1...Kxe1!
  • Keys
    • 1.Qc4!
      • 1...Kc1
        • 2.Qxc2#
      • 1...Kxe1
        • 2.Qe2#
      • 1...cxd1Q
        • 2.Qc3#
      • 1...cxd1S
        • 2.Re2#
      • 1...cxd1B
        • 2.Qc3#
      • 1...cxd1R
        • 2.Re2#
        • 2.Qc3#
      • 1...c1Q
        • 2.Qe2#
      • 1...c1S
        • 2.Qc3#
      • 1...c1B
        • 2.Qe2#
        • 2.Qc3#
      • 1...c1R
        • 2.Qe2#

This anticipates 172210(1996)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAR1(E),XP(a)
        • K(b);N_SPINP(a),P-FLIGHT::QAR2(E)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT,XR(B)
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(b);S_FLIGHT::QAR1(E),XP(a)
        • P(a);OGATE,XB(A)::QAR1(E),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT,XR(B)
  • Actual
    • Q(E);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAR1(E),XP(a)
      • K(b);S_FLIGHT,XR(B)::QAR1(E)
      • P(a);XB(A)::QAB1(E)
      • P(a);SBLOCK,XB(A)::R1(B)
      • P(a);SBLOCK::QAR1(E)
      • P(a);::QAB1(E)
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