MESON Chess Problem Database

Problem Display
PID: 231624 (8/5Q2/p2kpp2/P3R3/B3P3/2N2K2/1P6/B7 w - - 0 1)

Schier, Geza

Zaszlonk, 1927

8/5Q2/p2kpp2/P3R3/B3P3/2N2K2/1P6/B7

#2

9 + 4

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sb5+?
      • 1...Kxe5
        • 2.Qc7#
        • 2.b3#
        • 2.b4#
      • 1...Kc6
        • 2.Qc7#
      • 1...axb5!
    • 1.Rc5?
      • threat
        • 2.Qc7#
        • 2.Qf8#
      • 1...e5
        • 2.Rd5#
        • 2.Rc6#
      • 1...Kxc5!
    • 1.Qa7?
      • threat
        • 2.Qc5#
      • 1...Kxe5
        • 2.Qc5#
      • 1...fxe5!
    • 1.Qe7+?
      • 1...Kxe5
        • 2.Qc5#
      • 1...Kxe7!
    • 1.Qf8+?
      • 1...Kxe5
        • 2.Qc5#
      • 1...Kc7!
  • Keys
    • 1.b4!
      • threat
        • 2.Rxe6#
      • 1...Kxe5
        • 2.Sb5#
      • 1...fxe5
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(I)
      • Refutation
        • P(a);XS(C)
    • Try
      • R(H);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);S_FLIGHT,XR(H)
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Vars
        • K(b);S_FLIGHT,XR(H)::QAR2(I)
      • Refutation
        • P(d);XR(H)
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);OGATE,P_SPINP(c),S_FLIGHT,XR(H)::QAR2(I)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT,XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(H)::QAR2(I)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(B);
    • Threat
      • R1(H),XP(c)
    • Vars
      • K(b);S_FLIGHT,XR(H)::B(A)+S(C)
      • P(d);SBLOCK,XR(H)::QAR1(I)
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Developed and maintained by Brian Stephenson.
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