MESON Chess Problem Database

Problem Display
PID: 64512 (8/1p2p3/1P2P3/PQp1P3/P1pk1N2/3pR3/1p3P2/1B1K4 w - - 0 1)

Gamza, Grigory Stepanovich

2nd HM., Podolski Rabovich, 1981

8/1p2p3/1P2P3/PQp1P3/P1pk1N2/3pR3/1p3P2/1B1K4

#2

11 + 7

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Se2#
    • 1...d2
      • 2.Qd7#
    • 1...c3
      • 2.Qxd3#
  • Tries
    • 1.Ke1?
      • 1...Kc3
        • 2.Se2#
      • 1...c3
        • 2.Qxd3#
      • 1...d2+!
    • 1.Se2+?
      • 1...Kd5
        • 2.Qd7#
      • 1...dxe2+!
    • 1.Sg2?
      • 1...Kd5
        • 2.Qd7#
      • 1...d2
        • 2.Qd7#
      • 1...c3
        • 2.Qxd3#
      • 1...Kc3!
    • 1.Sh3?
      • 1...Kd5
        • 2.Qd7#
      • 1...d2
        • 2.Qd7#
      • 1...c3
        • 2.Qxd3#
      • 1...Kc3!
    • 1.Sd5?
      • 1...Kxd5
        • 2.Qd7#
      • 1...c3
        • 2.Qxd3#
      • 1...d2!
    • 1.Sh5?
      • 1...Kd5
        • 2.Qd7#
      • 1...d2
        • 2.Qd7#
      • 1...c3
        • 2.Qxd3#
      • 1...Kc3!
    • 1.Sg6?
      • 1...Kd5
        • 2.Qd7#
      • 1...d2
        • 2.Qd7#
      • 1...c3
        • 2.Qxd3#
      • 1...Kc3!
    • 1.Re4+?
      • 1...Kc3
        • 2.Sd5#
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Kxe4!
    • 1.Qb3?
      • 1...d2
        • 2.Re4#
        • 2.Qc3#
      • 1...c3
        • 2.Qd5#
      • 1...cxb3!
    • 1.Qb4?
      • 1...d2
        • 2.Re4#
        • 2.Qxd2#
        • 2.Qc3#
      • 1...cxb4!
    • 1.Qxc5+?
      • 1...Kc3
        • 2.Rxd3#
      • 1...Kxc5!
    • 1.a6?
      • 1...Kc3
        • 2.Se2#
      • 1...d2
        • 2.Qd7#
      • 1...c3
        • 2.Qxd3#
      • 1...bxa6!
  • Keys
    • 1.Sxd3!
      • 1...Kc3
        • 2.Qxb2#
      • 1...Kd5
        • 2.Qd7#
      • 1...cxd3
        • 2.Qxd3#
      • 1...c3
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(d);P_SPINP(b),S_FLIGHT::S(F)
    • P(b);::QAR(H)
    • P(c);OGATE::QAR1(H),XP(b)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(d);P_SPINP(b),S_FLIGHT::S(F)
        • P(c);OGATE::QAR1(H),XP(b)
      • Refutation
        • P(b);CHECK
    • Try
      • S(F);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::QAR2(H)
      • Refutation
        • P(b);CHECK,XS(F)
    • Try
      • S(F);
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::QAR2(H)
        • P(b);::QAR(H)
        • P(c);OGATE::QAR1(H),XP(b)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::QAR2(H)
        • P(b);::QAR(H)
        • P(c);OGATE::QAR1(H),XP(b)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(d);OGATEB,P-FLIGHT,P_SPINP(e),XS(F)::QAR2(H)
        • P(c);OGATE::QAR1(H),XP(b)
      • Refutation
        • P(b);
    • Try
      • S(F);
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::QAR2(H)
        • P(b);::QAR(H)
        • P(c);OGATE::QAR1(H),XP(b)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::QAR2(H)
        • P(b);::QAR(H)
        • P(c);OGATE::QAR1(H),XP(b)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
    • Try
      • R(D);CHECK
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(b),XR(D)
    • Try
      • Q(H);
      • Vars
        • P(c);OGATE,SBLOCK::QAR1(H)
      • Refutation
        • P(c);XQ(H)
    • Try
      • Q(H);P_PINP(c)
      • Refutation
        • P(e);N_SPINP(c),XQ(H)
    • Try
      • Q(H);CHECK,XP(e)
      • Vars
        • K(d);P_SPINP(b),S_FLIGHT::R1(D),XP(b)
      • Refutation
        • K(d);S_FLIGHT,XQ(H)
    • Try
      • P(G);
      • Vars
        • K(d);P_SPINP(b),S_FLIGHT::S(F)
        • P(b);::QAR(H)
        • P(c);OGATE::QAR1(H),XP(b)
      • Refutation
        • P(f);XP(G)
  • Actual
    • S(F);XP(b)
    • Vars
      • K(d);S_FLIGHT::QAB1(H),XP(a)
      • K(d);P-FLIGHT,P_SPINP(e)::QAR2(H)
      • P(c);OGATE,XS(F)::QAR1(H),XP(c)
      • P(c);::QAB1(H),XP(e)
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