MESON Chess Problem Database

Problem Display
PID: 123068 (8/1p6/1K1N2p1/2Ppp1P1/3kN1P1/2p1p1P1/2PpP3/7Q w - - 0 1)

Gruber, Bratoljub

4th Place, Yugoslav Team Match, 1957

8/1p6/1K1N2p1/2Ppp1P1/3kN1P1/2p1p1P1/2PpP3/7Q

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d1Q
      • 2.Qxd1#
    • 1...d1S
      • 2.Qxd1#
    • 1...d1B
      • 2.Qxd1#
    • 1...d1R
      • 2.Qxd1#
    • 1...dxe4
      • 2.Qxe4#
  • Tries
    • 1.Kb5?
      • 1...dxe4
        • 2.Qxe4#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...b6!
    • 1.Kxb7?
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...dxe4!
    • 1.Sf2?
      • 1...e4
        • 2.Qh8#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...exf2!
    • 1.Sxc3?
      • threat
        • 2.Scb5#
      • 1...e4
        • 2.Qh8#
      • 1...Kxc3!
    • 1.Qa1?
      • threat
        • 2.Qxc3#
        • 2.Qa4#
      • 1...d1S
        • 2.Qxd1#
        • 2.Qa4#
      • 1...dxe4!
    • 1.Qf1?
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...dxe4!
    • 1.Qg1?
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...dxe4!
    • 1.c6?
      • 1...dxe4
        • 2.Qxe4#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...bxc6!
  • Keys
    • 1.Sxd2!
      • threat
        • 2.Sb3#
        • 2.Sf3#
        • 2.Sb5#
      • 1...cxd2
        • 2.Qa1#
      • 1...exd2
        • 2.Qg1#
      • 1...e4
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • P(a);OGATEB::QAR(A),XQ(a)
    • P(a);OGATEB::QAR(A),XS(a)
    • P(a);OGATEB::QAR(A),XB(a)
    • P(a);OGATEB::QAR(A),XR(a)
    • P(e);OGATE,XS(E)::QAR1(A),XP(e)
  • Tries
    • Try
      • K(I);P-FLIGHT
      • Vars
        • P(e);OGATE,XS(E)::QAR1(A),XP(e)
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XB(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(h);
    • Try
      • K(I);P-FLIGHT,XP(h)
      • Vars
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XB(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(e);XS(E)
    • Try
      • S(E);
      • Vars
        • P(f);OGATEB::QAB(A)
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XB(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(c);XS(E)
    • Try
      • S(E);XP(b)
      • Threat
        • S(E)
      • Vars
        • P(f);OGATEB::QAB(A)
      • Refutation
        • K(d);S_FLIGHT,XS(E)
    • Try
      • Q(A);P_PINP(b)
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);XS(E)
    • Try
      • Q(A);
      • Vars
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XB(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(e);XS(E)
    • Try
      • Q(A);P_PINP(c)
      • Vars
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XB(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(e);XS(E)
    • Try
      • P(G);
      • Vars
        • P(e);OGATE,XS(E)::QAR1(A),XP(e)
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XB(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(h);XP(G)
  • Actual
    • S(E);XP(a)
    • Threat
      • DUALS(3)
    • Vars
      • P(b);OGATEB,XS(E)::QAB(A)
      • P(c);OGATEB,XS(E)::QAB(A)
      • P(f);OGATEB::QAB(A)
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