MESON Chess Problem Database

Problem Display
PID: 40127 (8/7p/1Q6/n7/8/1nR2PK1/6P1/7k w - - 0 1)

Pauly, Wolfgang

Source?, 0000

8/7p/1Q6/n7/8/1nR2PK1/6P1/7k

#2

5 + 4

4198 Wolfgang Pauly Challenge of a Legacy 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Rc1#
      • 2.Qb1#
    • 1...Sc1
      • 2.Rxc1#
    • 1...Sd4
      • 2.Rc1#
      • 2.Qb1#
    • 1...Sc5
      • 2.Rc1#
      • 2.Qb1#
  • Tries
    • 1.Re3?
      • threat
        • 2.Re1#
      • 1...Kg1
        • 2.Re1#
      • 1...Sd2!
    • 1.Rc4?
      • threat
        • 2.Rh4#
      • 1...Sd4
        • 2.Rc1#
        • 2.Qb1#
      • 1...Sc5
        • 2.Rc1#
        • 2.Qb1#
      • 1...Sxc4!
    • 1.Qd4?
      • threat
        • 2.Qd1#
      • 1...Sxd4
        • 2.Rc1#
      • 1...Sd2!
    • 1.Qd8?
      • threat
        • 2.Qd1#
      • 1...Kg1
        • 2.Qd1#
      • 1...Sd4
        • 2.Rc1#
      • 1...Sd2!
    • 1.Qxb3?
      • threat
        • 2.Rc1#
        • 2.Qd1#
        • 2.Qb1#
      • 1...Kg1
        • 2.Rc1#
        • 2.Qd1#
        • 2.Qb1#
      • 1...Sxb3!
    • 1.Qd6?
      • threat
        • 2.Qd1#
      • 1...Kg1
        • 2.Qd1#
      • 1...Sd4
        • 2.Rc1#
      • 1...Sd2!
    • 1.Qe6?
      • threat
        • 2.Qe1#
      • 1...Kg1
        • 2.Qe1#
      • 1...Sd2!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Rh5#
      • 1...Kg1
        • 2.Rc1#
      • 1...Sxc5
        • 2.Qb1#
      • 1...Sd4
        • 2.Rc1#
        • 2.Qb1#
      • 1...h5
        • 2.Rxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD::R(B),XS(b)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • K(a);P-FLIGHT::QAB(E)+R(B),DCHECK
      • Refutation
        • S(b);
    • Try
      • R(B);
      • Threat
        • R(B)
      • Refutation
        • S(c);XR(B)
    • Try
      • Q(E);
      • Threat
        • QAR(E)
      • Vars
        • S(b);N_GUARD,XQ(E)::R(B)
      • Refutation
        • S(b);
    • Try
      • Q(E);
      • Threat
        • QAR(E)
      • Vars
        • K(a);P-FLIGHT::QAR(E)
        • S(b);N_GUARD::R(B)
      • Refutation
        • S(b);
    • Try
      • Q(E);XS(b)
      • Threat
        • DUALS(3)
      • Refutation
        • S(c);XQ(E)
    • Try
      • Q(E);
      • Threat
        • QAR(E)
      • Vars
        • K(a);P-FLIGHT::QAR(E)
        • S(b);N_GUARD::R(B)
      • Refutation
        • S(b);
    • Try
      • Q(E);
      • Threat
        • QAR(E)
      • Vars
        • K(a);P-FLIGHT::QAR2(E)
      • Refutation
        • S(b);
  • Actual
    • R(B);
    • Threat
      • R(B)
    • Vars
      • K(a);P-FLIGHT::QAB(E)+R(B),DCHECK
      • S(b);OGATE,XR(B)::QAR(E)
      • P(d);::R(B),XP(d)
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