MESON Chess Problem Database

Problem Display
PID: 177954 (B2K3b/3Np3/2P1p3/R1p1r3/PBkNp3/1n6/1QP5/5b2 w - - 0 1)

Pavlov, Yury A

Sahs (Latvia), 1990

B2K3b/3Np3/2P1p3/R1p1r3/PBkNp3/1n6/1QP5/5b2

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qc3#
    • 1...Sa1
      • 2.Sb6#
    • 1...Sc1
      • 2.Sb6#
    • 1...Sd2
      • 2.Sb6#
    • 1...Sxd4
      • 2.Sb6#
    • 1...Sxa5
      • 2.Sb6#
    • 1...cxb4
      • 2.Sb6#
    • 1...cxd4
      • 2.Qxb3#
  • Tries
    • 1.Be1?
      • threat
        • 2.Sb6#
      • 1...Rd5
        • 2.Qc3#
      • 1...Kd5!
    • 1.Bd2?
      • threat
        • 2.Sb6#
      • 1...Rd5
        • 2.Qc3#
      • 1...Kd5!
    • 1.Bc3?
      • threat
        • 2.Sb6#
        • 2.Qxb3#
      • 1...Sxd4
        • 2.Sb6#
      • 1...Sxa5
        • 2.Sb6#
      • 1...Rd5
        • 2.Qxb3#
      • 1...Sa1
        • 2.Sb6#
      • 1...Sc1
        • 2.Sb6#
      • 1...Sd2
        • 2.Sb6#
      • 1...Kd5!
    • 1.Rb5?
      • threat
        • 2.Sb6#
      • 1...Rd5
        • 2.Qc3#
      • 1...Kd5!
    • 1.Rxc5+?
      • 1...Kxb4
        • 2.Qxb3#
      • 1...Sxc5
        • 2.Sb6#
      • 1...Rxc5!
    • 1.c7?
      • threat
        • 2.Qc3#
      • 1...cxb4
        • 2.Sb6#
      • 1...cxd4
        • 2.Qxb3#
      • 1...Kxb4!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Qxb3#
      • 1...Kxb4
        • 2.Qc3#
      • 1...Kd5
        • 2.Sb6#
      • 1...Sxa5
        • 2.Sb6#
      • 1...Sa1
        • 2.Sb6#
      • 1...Sc1
        • 2.Sb6#
      • 1...Sd2
        • 2.Sb6#
      • 1...Sd4
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(f);P_PINS(H),SBLOCK::QAR1(A)
    • S(b);::S(H)
    • S(b);XS(E)::S(H)
    • S(b);XR(F)::S(H)
    • P(e);SBLOCK,XB(D)::S(H)
    • P(e);SBLOCK,XS(E)::QAB1(A),XS(b)
  • Tries
    • Try
      • B(D);
      • Threat
        • S(H)
      • Vars
        • R(f);P_PINS(H),SBLOCK::QAR1(A)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
    • Try
      • B(D);
      • Threat
        • S(H)
      • Vars
        • R(f);P_PINS(H),SBLOCK::QAR1(A)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XS(E)::S(H)
        • S(b);XR(F)::S(H)
        • R(f);P_PINS(H),SBLOCK::QAB1(A),XS(b)
        • S(b);::S(H)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
    • Try
      • R(F);
      • Threat
        • S(H)
      • Vars
        • R(f);P_PINS(H),SBLOCK::QAR1(A)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
    • Try
      • R(F);CHECK,XP(e)
      • Vars
        • K(c);P-FLIGHT,P_SPINS(b),XB(D)::QAR1(A),XS(b)
        • S(b);XR(F)::S(H)
      • Refutation
        • R(f);XR(F)
    • Try
      • P(G);
      • Threat
        • QAR1(A)
      • Vars
        • P(e);SBLOCK,XB(D)::S(H)
        • P(e);SBLOCK,XS(E)::QAB1(A),XS(b)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(b),XB(D)
  • Actual
    • S(E);
    • Threat
      • QAB1(A),XS(b)
    • Vars
      • K(c);P-FLIGHT,P_SPINS(b),XB(D)::QAB1(A)
      • K(c);S_FLIGHT::S(H)
      • S(b);XR(F)::S(H)
      • S(b);::S(H)
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