MESON Chess Problem Database

Problem Display
PID: 134702 (1qr1n3/2p1K3/7p/5k1b/2R2p1p/7P/2R5/1B6 w - - 0 1)

Pater, Karl

Wiener Schachzeitung, 1901

(First published on Tue Jan 1 1901)

1qr1n3/2p1K3/7p/5k1b/2R2p1p/7P/2R5/1B6

#2

5 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kg6
      • 2.Rg2#
  • Tries
    • 1.Rb2+?
      • 1...Kg5
        • 2.Rc5#
      • 1...Ke5!
    • 1.Rd2+?
      • 1...Ke5
        • 2.Rc5#
      • 1...Kg5
        • 2.Rd5#
        • 2.Rc5#
      • 1...Qxb1!
    • 1.Re2+?
      • 1...Kg5
        • 2.Re5#
        • 2.Rc5#
      • 1...Qxb1!
    • 1.Ra4?
      • threat
        • 2.Rc5#
      • 1...Ke5
        • 2.Rc5#
      • 1...Kg5
        • 2.Rc5#
      • 1...Kg6
        • 2.Rg2#
      • 1...c5
        • 2.Rxc5#
      • 1...Qxb1!
    • 1.Rc5+?
      • 1...Kg6
        • 2.Rg2#
      • 1...Ke4!
  • Keys
    • 1.Rb4!
      • threat
        • 2.Rc5#
      • 1...Ke5
        • 2.Rc5#
      • 1...Kg5
        • 2.Rc5#
      • 1...Kg6
        • 2.Rg2#
      • 1...c5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(A)+R(B),DCHECK
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(c);P-FLIGHT::R(D)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(c);P-FLIGHT::R(D)
      • Refutation
        • Q(g);XB(A)
    • Try
      • R(B);CHECK
      • Refutation
        • Q(g);XB(A)
    • Try
      • R(D);
      • Threat
        • B(A)+R(B),DCHECK
      • Vars
        • K(c);P-FLIGHT::R(B)
        • K(c);S_FLIGHT::B(A)+R(B),DCHECK
        • P(f);::B(A)+R(B),DCHECK,XP(f)
      • Refutation
        • Q(g);XB(A)
    • Try
      • R(D);CHECK
      • Vars
        • K(c);S_FLIGHT::B(A)+R(B),DCHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • B(A)+R(B),DCHECK
    • Vars
      • K(c);P-FLIGHT::R(B)
      • K(c);S_FLIGHT::B(A)+R(B),DCHECK
      • P(f);::B(A)+R(B),DCHECK,XP(f)
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