MESON Chess Problem Database

Problem Display
PID: 147132 (1K4b1/3p2N1/3p1n2/2PkN3/Q2B4/ppp2RP1/r2bBP2/3R1q2 w - - 0 1)

Senkus, Raimondas

Australian Chess Problem Magazine, 1997

1K4b1/3p2N1/3p1n2/2PkN3/Q2B4/ppp2RP1/r2bBP2/3R1q2

#2

11 + 11

3713 Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qa8#
    • 1...Be1
      • 2.Qa8#
    • 1...Be3
      • 2.Qa8#
    • 1...Bf4
      • 2.Qa8#
    • 1...Bg5
      • 2.Qa8#
    • 1...Bh6
      • 2.Qa8#
    • 1...Se4
      • 2.Qc4#
  • Tries
    • 1.Bxc3?
      • threat
        • 2.Qc4#
        • 2.Qd4#
      • 1...Kxc5
        • 2.Qb5#
        • 2.Qd4#
        • 2.Qa5#
      • 1...Qxe2
        • 2.Qd4#
      • 1...Qxf2
        • 2.Qc4#
      • 1...dxc5
        • 2.Rd3#
      • 1...dxe5!
    • 1.Be3?
      • threat
        • 2.Qd4#
      • 1...Kxe5
        • 2.Rf5#
        • 2.Qd4#
      • 1...dxe5
        • 2.Qa8#
      • 1...dxc5!
    • 1.Rf4?
      • threat
        • 2.Qxb3#
        • 2.Qc4#
        • 2.Qa8#
      • 1...Qxe2
        • 2.Qa8#
      • 1...Qxd1
        • 2.Bc4#
        • 2.Qc4#
        • 2.Qa8#
      • 1...Bxf4
        • 2.Qa8#
      • 1...dxe5
        • 2.Qa8#
      • 1...Rb2
        • 2.Qc4#
        • 2.Qa8#
      • 1...Se4
        • 2.Qc4#
      • 1...b2
        • 2.Qb3#
        • 2.Qc4#
        • 2.Qa8#
      • 1...dxc5!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Qa8#
      • 1...Ke4
        • 2.Bf3#
      • 1...dxc5
        • 2.Bxc3#
      • 1...dxe5
        • 2.Be3#

Anticipated by 177977(1986)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • B(c);::QAB(F)
    • S(i);SBLOCK::QAB1(F)
  • Tries
    • Try
      • B(G);P_PINB(c),XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);XB(B)::QAR1(F)
        • Q(a);XP(C)::QAB1(F)
        • P(h);SBLOCK,XP(H)::R(D)
      • Refutation
        • P(h);XS(I)
    • Try
      • B(G);P_PINB(c)
      • Threat
        • QAR1(F)
      • Vars
        • P(h);SBLOCK,XS(I)::QAB(F)
      • Refutation
        • P(h);XP(H)
    • Try
      • R(D);
      • Threat
        • DUALS(3)
      • Vars
        • Q(a);XB(B)::QAB(F)
        • B(c);XR(D)::QAB(F)
        • P(h);XS(I)::QAB(F)
        • S(i);::QAB1(F)
      • Refutation
        • P(h);XP(H)
  • Actual
    • R(D);
    • Threat
      • QAB(F)
    • Vars
      • K(g);S_FLIGHT::B(B)
      • P(h);SBLOCK,XP(H)::R(D)+B(G),XP(f)
      • P(h);SBLOCK,XS(I)::R(D)+B(G)
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