MESON Chess Problem Database

Problem Display
PID: 39400 (8/8/K1R5/8/kp6/p7/Q7/n7 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Die Schwalbe, 1996

8/8/K1R5/8/kp6/p7/Q7/n7

#2

3 + 4

2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Rc4#
  • Tries
    • 1.Rc4?
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb3!
    • 1.Rc5?
      • threat
        • 2.Ra5#
      • 1...b3
        • 2.Rc4#
      • 1...Sb3!
    • 1.Qc4?
      • 1...a2
        • 2.Qxa2#
      • 1...Sb3
        • 2.Qb5#
      • 1...Sc2!
    • 1.Qd5?
      • 1...a2
        • 2.Qxa2#
      • 1...b3
        • 2.Rc4#
        • 2.Qc4#
        • 2.Qe4#
        • 2.Qd4#
        • 2.Qa5#
        • 2.Qb5#
      • 1...Sb3
        • 2.Qb5#
      • 1...Sc2!
    • 1.Qxa1?
      • 1...a2
        • 2.Qxa2#
      • 1...b3
        • 2.Rc4#
        • 2.Qd4#
      • 1...Kb3!
  • Keys
    • 1.Rc3!
      • 1...bxc3
        • 2.Qc4#
      • 1...b3
        • 2.Rc4#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sc2
        • 2.Qb3#

This anticipates 245137(1996)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATEB::R(C)
  • Tries
    • Try
      • R(C);
      • Vars
        • S(a);N_GUARD::QAB(A),XS(a)
      • Refutation
        • S(a);
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • P(d);OGATEB::R(C)
      • Refutation
        • S(a);
    • Try
      • Q(A);N_PINP(b),P_PINP(d)
      • Vars
        • P(b);OGATEB::QAR2(A),XP(b)
        • S(a);SBLOCK::QAB1(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);N_PINP(b)
      • Vars
        • P(b);OGATEB::QAR2(A),XP(b)
        • S(a);SBLOCK::QAB1(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);XS(a)
      • Vars
        • P(b);OGATEB::QAR2(A),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • P(d);OGATEB,XR(C)::QAR2(A)
      • P(d);OGATEB::R(C)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(a);N_GUARD::QAB1(A)
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