MESON Chess Problem Database

Problem Display
PID: 262825 (1B6/1P6/2pN1p2/Q4P2/bprk3K/1P3P2/1n1NpP2/1BRR4 w - - 0 1)

Tura, Waldemar

Szachy, 1960

1B6/1P6/2pN1p2/Q4P2/bprk3K/1P3P2/1n1NpP2/1BRR4

#2

13 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qxc5#
    • 1...Bxb3
      • 2.Sxb3#
    • 1...Sxd1
      • 2.Rxc4#
    • 1...Sd3
      • 2.Rxc4#
  • Tries
    • 1.S6e4?
      • threat
        • 2.Qd8#
      • 1...Rc5
        • 2.Qxc5#
      • 1...c5!
    • 1.Ba7+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...c5!
  • Keys
    • 1.Qd8!
      • threat
        • 2.S6e4#
      • 1...Kc5+
        • 2.S2e4#
      • 1...Kd5+
        • 2.S6e4#
      • 1...Ke5+
        • 2.S6xc4#
      • 1...Rc5
        • 2.Sb5#
      • 1...c5
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(e);N_GUARD::QAB1(I),XR(e)
    • B(c);XP(F)::R(C)+S(D),DCHECK,XB(c)
    • S(a);N_GUARD,XR(C)::R1(B),XR(e)
    • S(a);N_GUARD::R1(B),XR(e)
  • Tries
    • Try
      • S(K);
      • Threat
        • QAR(I)
      • Vars
        • R(e);N_GUARD::QAB1(I),XR(e)
      • Refutation
        • P(g);
    • Try
      • B(M);CHECK
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::QAB1(I),XR(e)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • Q(I);
    • Threat
      • QAR(I)+S(K)
    • Vars
      • K(f);CHECK,N_GUARD,P_SPINR(e),S_CUTP(b),S_CUTP(b),S_CUTP(b),S_CUTP(b),S_CUTS(a),S_CUTS(a),S_FLIGHT::S(D)
      • K(f);CHECK,P-FLIGHT::QAR(I)+S(K)
      • K(f);CHECK,N_GUARD,S_FLIGHT::B(M)+S(K),DCHECK,XR(e)
      • R(e);::QAR(I)+S(K),DCHECK
      • P(g);SBLOCK::QAR(I)+S(K),DCHECK
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