MESON Chess Problem Database

Problem Display
PID: 105602 (8/5p2/5p2/5R2/3k4/1P1b1P2/n2Qp1N1/4K3 w - - 0 1)

Schneider, Vilmos

3rd Comm., Express Wieczorny, 1954

8/5p2/5p2/5R2/3k4/1P1b1P2/n2Qp1N1/4K3

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qb2#
    • 1...Sc3
      • 2.Qe3#
    • 1...Sb4
      • 2.Qb2#
  • Tries
    • 1.Se3?
      • threat
        • 2.Sc2#
        • 2.Rd5#
      • 1...Sc3
        • 2.Sc2#
      • 1...Sb4!
    • 1.Ra5?
      • 1...Sc1
        • 2.Qb2#
      • 1...Sc3
        • 2.Qe3#
      • 1...Sb4
        • 2.Qb2#
      • 1...f5!
    • 1.Rb5?
      • 1...Sc1
        • 2.Qb2#
      • 1...Sc3
        • 2.Qe3#
      • 1...Sb4
        • 2.Qb2#
      • 1...f5!
    • 1.Rh5?
      • 1...Sc1
        • 2.Qb2#
      • 1...Sc3
        • 2.Qe3#
      • 1...Sb4
        • 2.Qb2#
      • 1...f5!
    • 1.Qb4+?
      • 1...Bc4
        • 2.Qxc4#
      • 1...Sxb4!
    • 1.Qf4+?
      • 1...Be4
        • 2.Qe3#
      • 1...Kc3!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sxe2#
        • 2.Rd5#
        • 2.Qxd3#
      • 1...Sc1
        • 2.Rd5#
      • 1...Sc3
        • 2.Qxd3#
      • 1...Sb4
        • 2.Sxe2#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB(B)
    • S(a);SBLOCK::QAB1(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::S(C)
      • Refutation
        • S(a);
    • Try
      • R(F);
      • Vars
        • S(a);N_GUARD::QAB(B)
        • S(a);SBLOCK::QAB1(B)
      • Refutation
        • P(e);
    • Try
      • R(F);
      • Vars
        • S(a);N_GUARD::QAB(B)
        • S(a);SBLOCK::QAB1(B)
      • Refutation
        • P(e);
    • Try
      • R(F);
      • Vars
        • S(a);N_GUARD::QAB(B)
        • S(a);SBLOCK::QAB1(B)
      • Refutation
        • P(e);
    • Try
      • Q(B);CHECK,N_PINB(c)
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAR1(B),XB(c)
      • Refutation
        • S(a);XQ(B)
    • Try
      • Q(B);CHECK,N_PINB(c)
      • Vars
        • B(c);P_SPINB(c)::QAB1(B)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(C);
    • Threat
      • DUALS(3)
    • Vars
      • S(a);::R1(F)
      • S(a);::QAR1(B),XB(c)
      • S(a);::S(C),XP(b)
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