MESON Chess Problem Database

Problem Display
PID: 278312 (B7/2Np4/1Q1B4/2PR2P1/2bNkP2/4p3/2P1p1P1/4K3 w - - 0 1)

Petrovic, Miodrag

Stella Polaris, 1972

B7/2Np4/1Q1B4/2PR2P1/2bNkP2/4p3/2P1p1P1/4K3

#2

12 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Re5+?
      • 1...Kxd4
        • 2.Qb2#
      • 1...Kxf4!
    • 1.Rf5+?
      • 1...Kxd4
        • 2.Be5#
        • 2.Qb2#
      • 1...Bd5!
    • 1.Qb1?
      • 1...Bxd5
        • 2.c3#
      • 1...Bb3
        • 2.cxb3#
      • 1...Bd3
        • 2.cxd3#
      • 1...Bb5
        • 2.c4#
      • 1...Ba6
        • 2.c4#
      • 1...Ba2!
    • 1.Qb5?
      • 1...Bxd5
        • 2.Qd3#
      • 1...Ba2
        • 2.Qd3#
      • 1...Bb3
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
        • 2.cxd3#
      • 1...Bxb5!
  • Keys
    • 1.Qb4!
      • 1...Bxd5
        • 2.Bxd5#
      • 1...Ba2
        • 2.Sb3#
      • 1...Bb3
        • 2.Sxb3#
      • 1...Bd3
        • 2.Rf5#
      • 1...Bb5
        • 2.Sdxb5#
      • 1...Ba6
        • 2.Sdb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(d);N_GUARD,P-FLIGHT,XS(D)::QAB(I)
      • Refutation
        • K(d);P-FLIGHT,XP(E)
    • Try
      • R(G);CHECK
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(I);
      • Vars
        • B(c);N_GUARD,P_SPINB(c),XR(G)::QAB(I)+P(B)
        • B(c);OGATE::QAB(I)+P(B),XB(c)
        • B(c);OGATE::P(B),XB(c)
        • B(c);OGATE::QAB(I)+P(B)
      • Refutation
        • B(c);
    • Try
      • Q(I);
      • Vars
        • B(c);OGATE,P_SPINB(c),XR(G)::QAB1(I)
        • B(c);OGATE::QAB1(I)
      • Refutation
        • B(c);XQ(I)
  • Actual
    • Q(I);
    • Vars
      • B(c);OGATE,P_SPINB(c),XR(G)::B(L),XB(c)
      • B(c);::QAR(I)+S(D)
      • B(c);::QAR(I)+S(D),XB(c)
      • B(c);N_GUARD::B(L)+R(G)
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